_______________

Check out my latest Eugene Daily News Weather Or Not Column Remember What Don Essig Always Says. Really?

________________

No winner this week. Here is my new weekly weather quiz question for the last time. What is a “wall cloud?” Here is the correct answer. A wall cloud is a localized, persistent, often abrupt lowering from a rain-free base. Wall clouds can range from a fraction of a mile up to nearly five miles in diameter, and normally are found on the south or southwest (inflow) side of the thunderstorm. When seen from within several miles, many wall clouds exhibit rapid upward motion and cyclonic rotation. However, not all wall clouds rotate. Rotating wall clouds
usually develop before strong or violent tornadoes, by anywhere from a few minutes up to nearly an hour. Wall clouds should be monitored visually for signs of persistent, sustained rotation and/or rapid vertical motion. ”Wall cloud” also is used occasionally in tropical meteorology to describe the inner cloud wall surrounding the eye of a tropical cyclone, but the proper term for this feature is eyewall. I’ll have a new weekly weather quiz question for you starting Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir, and now Fern Ridge Reservoir has been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low (“U” shape with blue arrows) along the coast will continue to send disturbances our way including this frontal system that will move through the Pacific Northwest by late Monday. That will keep us in a cooler and potentially wet weather pattern for the week. Yet another frontal system will move into Oregon by the end of next week.

________________

The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Absent at 0 as of 8/22/13 according to Oregon Allergy Associates.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a (30%) chance of evening showers, mostly cloudy late tonight (under 0.10 in. of rain possible).
• Mostly cloudy Monday AM, partly cloudy in the afternoon, mostly cloudy with a slight (20%) chance of rain late at night (under 0.10 in. of rain possible).
• A mix of clouds and sun Tuesday, partly cloudy in the evening, mostly cloudy late Tuesday night and Wednesday AM, a mix of clouds and sun in the afternoon, partly cloudy in the evening, then mostly cloudy late Wednesday night.
• lows 55-53 highs 77-83.
• Mostly cloudy Thursday AM, then partly cloudy Thursday afternoon through Saturday.
• Party cloudy with a slight (20%) chance of showers Saturday night and Sunday AM, then just partly cloudy Sunday afternoon.
• highs 82-77 lows 57-53. (seasonal averages high 82 low 50)

________________

Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy with a (30%) chance of scattered showers and a slight (20%) chance of thunderstorms early this evening, a (30%) chance of showers late this evening, mostly cloudy late tonight (under 0.10 in. of rain possible) and Monday AM, partly cloudy in the afternoon through Tuesday evening, mostly cloudy late at night.
• Cloudy Wednesday AM, then partly cloudy Wednesday afternoon and Wednesday night.
• lows 58-61 highs 81-85.
• Partly cloudy Thursday, partly cloudy with a slight (20%) chance of showers Thursday night and Friday, partly cloudy Friday night and Saturday, partly cloudy with a slight (20%) chance of showers Saturday night and Sunday AM, then just partly cloudy Sunday afternoon.
• highs near 83 lows 58-54 warming to 58 Friday night. (seasonal averages high 84 low 55)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of showers this evening, just mostly cloudy late tonight (under 0.10 in. of rain possible), mostly cloudy with patchy coastal fog Monday AM, a slight (20%) chance of rain in the afternoon, mostly cloudy Monday night with a slight (20%) chance of coastal rain late at night.
• Mostly cloudy with a slight (20%) chance of coastal rain Tuesday and Tuesday evening, then mostly cloudy Tuesday afternoon and night.
• lows 53-56 highs near 69.
• Mostly cloudy with a slight (20%) chance of rain Wednesday and Wednesday night.
• Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy with a slight (20%) chance of showers Thursday afternoon, Thursday night and Friday partly cloudy Friday night and Saturday AM, mostly cloudy with a slight (20%) chance f .
• Partly cloudy Friday through Saturday AM, then mostly cloudy Saturday afternoon through Sunday AM, then just partly cloudy Sunday afternoon.
• highs 67-65 lows near 55. (seasonal averages high 66 low 53)

________________

Forecast for the Cascades of Lane County:

• Mostly cloudy with a good (50%) chance of thunderstorms this evening (0.50 in. of rain possible, more in storms), mostly cloudy late tonight.
• Mostly cloudy Monday AM, a mix of clouds and sun Monday afternoon, partly cloudy late Monday night. Partly cloudy Tuesday AM, mostly sunny in the afternoon, then partly cloudy Tuesday night through Wednesday night.
• free air freezing level 11,000 ft. tonight through Monday night, 12,000 ft. Tuesday, then 13,000 ft. Tuesday night through Wednesday night.
• lows 45-47 cooling to near 45 Wednesday night highs 67-70.
• Partly cloudy with a slight (20%) chance of showers Thursday afternoon through Sunday AM, then just partly cloudy Sunday afternoon.
• snow level 8,000 ft. Thursday through Sunday.
• highs 70-66 lows 48-44.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at Eugene Daily News.com.

________________

_______________

Check out my latest Eugene Daily News Weather Or Not Column Remember What Don Essig Always Says. Really?

________________

No winner this week. Here is my new weekly weather quiz question for the last time. What is a “wall cloud?” Here is the correct answer. A wall cloud is a localized, persistent, often abrupt lowering from a rain-free base. Wall clouds can range from a fraction of a mile up to nearly five miles in diameter, and normally are found on the south or southwest (inflow) side of the thunderstorm. When seen from within several miles, many wall clouds exhibit rapid upward motion and cyclonic rotation. However, not all wall clouds rotate. Rotating wall clouds
usually develop before strong or violent tornadoes, by anywhere from a few minutes up to nearly an hour. Wall clouds should be monitored visually for signs of persistent, sustained rotation and/or rapid vertical motion. ”Wall cloud” also is used occasionally in tropical meteorology to describe the inner cloud wall surrounding the eye of a tropical cyclone, but the proper term for this feature is eyewall. I’ll have a new weekly weather quiz question for you starting Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir, and now Fern Ridge Reservoir has been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low (“U” shape with blue arrows) along the coast will continue to send disturbances our way including this frontal system that will move through the Pacific Northwest on Monday. That will keep us in a cooler and potentially wet weather pattern for the week.

________________

The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Absent at 0 as of 8/22/13 according to Oregon Allergy Associates.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a slight (20%) chance of showers this AM, a good (50%) chance of showers and a slight (20%) chance of thunderstorms in the afternoon (0.10 in. of rain possible, more in storms), a (30%) chance of evening showers, mostly cloudy late tonight (under 0.10 in. of rain possible).
• A mix of clouds and sun Monday afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain late at night.
• Mostly cloudy Tuesday AM, partly cloudy in the afternoon and evening, then just mostly cloudy Tuesday night.
• highs 75-83 lows near 55.
• Mostly cloudy Wednesday AM, partly cloudy in the afternoon and evening, mostly cloudy late Wednesday night.
• Mostly cloudy Thursday AM, then partly cloudy in the afternoon through Saturday.
• highs 82-78 lows near 55. (seasonal averages high 82 low 50)

________________

Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy with a good (50%) chance of scattered showers and a slight (20%) chance of thunderstorms today, a slight (20%) chance of evening showers, mostly cloudy late tonight and Monday AM, partly cloudy in the afternoon, mostly cloudy Monday night, partly cloudy Tuesday afternoon, then mostly cloudy Tuesday night.
•  highs 76-84 lows 60-57.
• Partly cloudy Wednesday through Saturday.
• highs 84-82 warming to 85 Saturday lows 58-54 warming to 58 Friday night. (seasonal averages high 84 low 55)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of AM coastal showers and a slight (20%) chance of thunderstorms late this afternoon while a (30%) chance of showers and a slight (20%) chance of thunderstorms inland today, partly cloudy with a slight (20%) chance of evening showers inland, just mostly cloudy tonight, mostly cloudy with patchy coastal fog Monday AM, a slight (20%) chance of rain in the afternoon, mostly cloudy Monday night with a slight (20%) chance of rain late.
• Mostly cloudy with a slight (20%) chance of coastal rain Tuesday AM, then mostly cloudy Tuesday afternoon and night.
• highs 64-69 lows 53-56.
• Mostly cloudy with a slight (20%) chance of rain in the Wednesday and Wednesday night.
• Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy with a slight (20%) chance of showers Thursday afternoon and Thursday night.
• Partly cloudy Friday through Saturday AM, then mostly cloudy Saturday afternoon.
• highs 69-66 lows near 55. (seasonal averages high 66 low 53)

________________

Forecast for the Cascades of Lane County:

• Cloudy with a (40%) chance of showers this AM, mostly cloudy with showers likely (70%) and a slight (20%) chance of thunderstorms this afternoon and evening (0.50 in. of rain possible, more in storms), partly cloudy late tonight.
• Mostly cloudy with a slight (20%) chance of  AM showers, a mix of clouds and sun Monday afternoon, then partly cloudy Monday night through Tuesday night.
• snow level above 8,000 ft. today through Monday, free air freezing level 11,000 ft. rising to 12,000 ft. late Monday night, 12,000 ft. rising to 13,000 ft. Tuesday, then 13,000 ft. falling to 12,000 ft. Tuesday night.
• highs 65-68 lows 45-47.
• Partly cloudy Wednesday and Wednesday night. Partly cloudy with a slight (20%) chance of showers Thursday afternoon and evening, partly cloudy at night. Partly cloudy with a slight (20%) chance of showers Friday afternoon and evening, partly cloudy late at night and Saturday.
• free air freezing level 12,000 ft. Wednesday through Thursday AM, snow level above 8,000 ft. in the afternoon and evening, free air freezing level 12,000 ft. late Thursday night and Friday AM, snow level above 8,000 ft. Friday afternoon and evening, then free air freezing level 12,000 ft. late Friday night and Saturday.
• highs 70-66 lows 46-48.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at Eugene Daily News.com.

________________

_______________

Check out my latest Eugene Daily News Weather Or Not Column Remember What Don Essig Always Says. Really?

________________

No winner this week. Here is my new weekly weather quiz question for the last time. What is a “wall cloud?” Here is the correct answer. A wall cloud is a localized, persistent, often abrupt lowering from a rain-free base. Wall clouds can range from a fraction of a mile up to nearly five miles in diameter, and normally are found on the south or southwest (inflow) side of the thunderstorm. When seen from within several miles, many wall clouds exhibit rapid upward motion and cyclonic rotation. However, not all wall clouds rotate. Rotating wall clouds
usually develop before strong or violent tornadoes, by anywhere from a few minutes up to nearly an hour. Wall clouds should be monitored visually for signs of persistent, sustained rotation and/or rapid vertical motion. ”Wall cloud” also is used occasionally in tropical meteorology to describe the inner cloud wall surrounding the eye of a tropical cyclone, but the proper term for this feature is eyewall. I’ll have a new weekly weather quiz question for you starting Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir, and now Fern Ridge Reservoir has been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low (“U” shape with blue arrows) has moved to the north away from us.  Now the upper airflow is moving from the south producing the chance of showers and thunderstorms as the upper low rides north. A weak frontal system is sliding through Oregon with cooler temperatures behind it. Another upper level low will move in along the coast continuing the normal to cooler than normal temperatures. The Eugene Celebration runs through Sunday and you might want to take an umbrella because there will be a good chance of showers with a slight  chance of a thunderstorm in the afternoon.

________________

The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Absent at 0 as of 8/22/13 according to Oregon Allergy Associates.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with isolated evening showers, just mostly cloudy late tonight.
• Mostly cloudy with a slight (20%) chance of showers Sunday AM, a good (50%) chance of showers and a slight (20%) chance of thunderstorms in the afternoon (under 0.10 in. of rain possible, more in storms), a (30%) chance of evening showers, mostly cloudy late Sunday night.
• Mostly cloudy Monday AM, a mix of clouds and sun in the afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain late at night.
• Mostly cloudy Tuesday AM, a mix of clouds and sun in the afternoon with a slight (20%) chance of showers, then just mostly cloudy Tuesday night.
• lows 56-53 highs 75-80.
• Mostly cloudy Wednesday AM, partly cloudy in the afternoon and evening, mostly cloudy late Wednesday night.
• Mostly cloudy Thursday AM, then partly cloudy in the afternoon through Tuesday.
• highs 82-78 lows near 55. (seasonal averages high 82 low 51)

________________

Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy with patchy fog this evening, a slight (20%) chance of thunderstorms late tonight.
• Mostly cloudy with a (30%) chance of showers and a slight (20%) chance of thunderstorms Sunday, a slight (20%) chance of evening showers, partly cloudy late Sunday night and Monday, mostly cloudy Monday night through Tuesday night.
• lows 60-55 highs 76-84.
• Mostly cloudy Wednesday AM, partly cloudy with a slight (20%) chance of rain in the afternoon, then partly cloudy Wednesday night through Saturday.
• highs 82-85 lows 58-54 warming to 58 Friday night. (seasonal averages high 84 low 55)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of coastal showers tonight while a slight (20%) chance of thunderstorms inland late tonight.
• Mostly cloudy with a slight (20%) chance of AM coastal showers and a slight (20%) chance of thunderstorms late Sunday afternoon while a (30%) chance of showers and a slight (20%) chance of thunderstorms inland Sunday, partly cloudy with a slight (20%) chance of evening showers inland, just mostly cloudy at night, mostly cloudy with patchy coastal fog Monday AM, a slight (20%) chance of rain in the afternoon, mostly cloudy Monday night with a slight (20%) chance of rain late.
• Mostly cloudy with a slight (20%) chance of rain Tuesday afternoon, then mostly cloudy Tuesday night.
• lows 54-52 warming to 55 Tuesday night highs 66-69.
• Mostly cloudy Wednesday AM, partly cloudy with a slight (20%) chance of rain in the afternoon and evening, partly cloudy late Wednesday night.
• Partly cloudy with a slight (20%) chance of showers Thursday and Thursday night.
• Partly cloudy Friday through Saturday AM, then mostly cloudy Saturday afternoon.
• highs 69-66 lows near 55. (seasonal averages high 66 low 53)

________________

Forecast for the Cascades of Lane County:

• Mostly cloudy with a slight (20%) chance of isolated showers tonight.
• Cloudy with a (40%) chance of showers Sunday AM, mostly cloudy with showers likely (70%) and a slight (20%) chance of thunderstorms in the afternoon and evening (0.25 in. of rain possible, more in storms), mostly cloudy late Sunday night.
• Mostly cloudy with a slight (20%) chance of  AM showers, a mix of clouds and sun Monday afternoon, partly cloudy Monday night.
• A mix of clouds and sun Tuesday, then partly cloudy at night.
• snow level above 8,000 ft. tonight through Monday, free air freezing level 12,000 ft.  Monday evening, then snow level above 8,000 ft. late Monday night, free air freezing level 13,000 ft. Tuesday, then 12,000 ft. Tuesday night.
•  lows 47-45 warming back to 47 Tuesday night highs 65-68.
• Partly cloudy Wednesday and Wednesday night. Partly cloudy with a slight (20%) chance of showers Thursday afternoon and evening, partly cloudy at night. Partly cloudy with a slight (20%) chance of showers Friday afternoon and evening, partly cloudy late at night and Saturday.
• free air freezing level 12,000 ft. Wednesday through Thursday AM, snow level above 8,000 ft. in the afternoon and evening, free air freezing level 12,000 ft. late Thursday night and Friday AM, snow level above 8,000 ft. Friday afternoon and evening, then free air freezing level 12,000 ft. late Friday night and Saturday.
• highs 70-66 lows 46-48.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at Eugene Daily News.com.

________________

_______________

Check out my latest Eugene Daily News Weather Or Not Column Remember What Don Essig Always Says. Really?

________________

No winner this week. Here is my new weekly weather quiz question for the last time. What is a “wall cloud?” Here is the correct answer. A wall cloud is a localized, persistent, often abrupt lowering from a rain-free base. Wall clouds can range from a fraction of a mile up to nearly five miles in diameter, and normally are found on the south or southwest (inflow) side of the thunderstorm. When seen from within several miles, many wall clouds exhibit rapid upward motion and cyclonic rotation. However, not all wall clouds rotate. Rotating wall clouds
usually develop before strong or violent tornadoes, by anywhere from a few minutes up to nearly an hour. Wall clouds should be monitored visually for signs of persistent, sustained rotation and/or rapid vertical motion. “Wall cloud” also is used occasionally in tropical meteorology to describe the inner cloud wall surrounding the eye of a tropical cyclone, but the proper term for this feature is eyewall. I’ll have a new weekly weather quiz question for you starting Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir, and now Fern Ridge Reservoir has been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low (“U” shape with blue arrows) has moved to the north away from us.  Now the upper airflow is moving from the south producing the chance of showers and thunderstorms as the upper low rides north. A weak frontal system is sliding through Oregon with cooler temperatures behind it. Another upper level low will move in along the coast continuing the normal to cooler than normal temperatures. The Eugene Celebration runs through Sunday and so far the weather is looking not too bad. Look for cooler temperatures with just a slight chance of a shower Sunday AM and a (40%) chance of showers in the afternoon.

________________

The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Absent at 0 as of 8/22/13 according to Oregon Allergy Associates.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Cloudy this AM, a mix of clouds and sun this afternoon, partly cloudy this evening, mostly cloudy late tonight.
• Mostly cloudy with a slight (20%) chance of showers Sunday AM, a (40%) chance of showers in the afternoon, a slight (20%) chance of evening showers, partly cloudy late Sunday night.
• A mix of clouds and sun Monday, partly cloudy in the evening, then mostly cloudy with a slight (20%) chance of rain late at night.
• highs 78-80 lows 55-52.
• Mostly sunny Wednesday AM, a mix of clouds and sun in the afternoon, mostly cloudy in the evening, partly cloudy late Wednesday night.
• A mix of clouds and sun Thursday, partly cloudy at night, mostly sunny Friday AM, then a mix of clouds and sun in the afternoon.
• highs near 80 lows near 53. (seasonal averages high 82 low 51)

________________

Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy with patchy fog this AM, mostly cloudy with more patchy smoke in the afternoon, mostly cloudy with areas of smoke tonight and Sunday AM, a (40%) chance of AM showers, a (30%) chance of showers and a slight (20%) chance of thunderstorms in the afternoon and evening, partly cloudy late Sunday night through Monday evening, then mostly cloudy late Monday night.
• highs 83-76 warming to 80 lows near 58.
• Mostly cloudy with a slight (20%) chance of rain Tuesday through Wednesday, then partly cloudy Wednesday night through Friday.
• highs 82-84 lows 55-58 cooling to 54 Thursday night. (seasonal averages high 84 low 55)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with patchy fog and areas of drizzle this AM, mostly cloudy in the afternoon and at night with patchy fog late at night.
• Mostly cloudy Sunday with patchy fog and a slight (20%) chance of showers, partly cloudy at night and Monday AM, mostly cloudy in the afternoon, then mostly cloudy with a slight (20%) chance of rain late Monday night.
• highs 69-66 lows 57-52 warming to 55 Monday night.
• Mostly cloudy with a slight (20%) chance of rain Tuesday through Wednesday evening, partly cloudy late Wednesday night, partly cloudy with a slight (20%) chance of showers Thursday and Thursday night, then just partly cloudy Friday.
• highs near 67 lows near 55. (seasonal averages high 66 low 53)

________________

Forecast for the Cascades of Lane County:

• A mix of clouds and sun today with a slight (20%) chance of showers this afternoon, partly cloudy in the evening, mostly cloudy at night.
• Cloudy with a good (50%) chance of showers Sunday, mostly cloudy in the evening with a slight (20%) chance of showers, then mostly cloudy late Sunday night.
• A mix of clouds and sun Monday, partly cloudy with a slight (20%) chance of rain late Monday night.
• snow level above 8,000 ft. today through Sunday night, free air freezing level 11,000 ft. Monday and Monday evening, then snow level above 8,000 ft. late Monday night.
•  highs 65-60 warming to 66 Monday lows near 45.
• Partly cloudy with a slight (20%) chance of rain Tuesday AM, partly cloudy in the afternoon and Tuesday night, a mix of clouds and sun Wednesday afternoon, partly cloudy Wednesday night. Partly cloudy with a slight (20%) chance of showers Thursday afternoon and evening, then partly cloudy Friday.
• snow level above 8,000 ft. Tuesday AM, free air freezing level 12,000 ft. Tuesday afternoon, 12,000 ft. rising to 13,000 ft. at night, 13,000 ft. Wednesday and  Wednesday night and Thursday AM, snow level above 8,000 ft. in the afternoon and evening, free air freezing level 12,000 ft. late Thursday night, then 12,000 ft. rising to 13,000 ft. Friday.
• highs 66-70 lows near 46.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at Eugene Daily News.com.

________________

_______________

Check out my latest Eugene Daily News Weather Or Not Column Remember What Don Essig Always Says. Really?

________________

Here is my new weekly weather quiz question. What is a “wall cloud?”  Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir, and now Fern Ridge Reservoir has been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low (“U” shape with blue arrows) has moved to the north away from us.  Now the upper airflow is moving from the south producing the chance of showers and thunderstorms as the upper low rides north. A weak frontal system is sliding through Oregon with cooler temperatures behind it. Another upper level low will move in along the coast continuing the normal to cooler than normal temperatures. The Eugene Celebration runs through Sunday and so far the weather is looking pretty good. Look for cooler temperatures with just a slight chance of a shower Sunday AM and a (40%) chance of showers in the afternoon.

________________

The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Absent at 0 as of 8/22/13 according to Oregon Allergy Associates.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy this evening, cloudy late tonight.
• Mostly cloudy Saturday AM and  Saturday night.
• Mostly cloudy with a slight (20%) chance of showers Sunday AM, a (40%) chance of showers in the afternoon, a slight (20%) chance of evening showers, partly cloudy late Sunday night.
• A mix of clouds and sun Monday, partly cloudy in the evening, then mostly cloudy with a slight (20%) chance of rain late at night.
• lows 57-52 highs 75-78.
• Mostly sunny Wednesday AM, a mix of clouds and sun in the afternoon, mostly cloudy in the evening, partly cloudy late Wednesday night.
• A mix of clouds and sun Thursday, partly cloudy at night, mostly sunny Friday AM, then a mix of clouds and sun in the afternoon.
• highs near 80 lows near 53. (seasonal averages high 82 low 51)

________________

Forecast for the Umpqua Basin including Roseburg:

• Mostly clear this evening, mostly cloudy with patchy fog late at night and Saturday AM, mostly cloudy with more patchy smoke in the afternoon, mostly cloudy with areas of smoke Saturday night and Sunday AM, a (40%) chance of AM showers, a (30%) chance of showers and a slight (20%) chance of thunderstorms in the afternoon and evening, partly cloudy late Sunday night through Monday evening, then mostly cloudy late Monday night.
•  lows near 58 highs 83-76 warming to 80.
• Mostly cloudy with a slight (20%) chance of rain Tuesday through Wednesday, then partly cloudy Wednesday night through Friday.
• highs 82-84 lows 55-58 cooling to 54 Thursday night. (seasonal averages high 84 low 55)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with patchy fog and areas of drizzle late tonight and Saturday AM, mostly cloudy in the afternoon and at night with patchy fog late at night.
• Mostly cloudy Sunday with patchy fog and a slight (20%) chance of showers, partly cloudy at night and Monday AM, mostly cloudy in the afternoon, then mostly cloudy with a slight (20%) chance of rain late Monday night.
• lows 57-52 warming to 55 Monday night highs 69-66.
• Mostly cloudy with a slight (20%) chance of rain Tuesday through Wednesday evening, partly cloudy late Wednesday night, partly cloudy with a slight (20%) chance of showers Thursday and Thursday night, then just partly cloudy Friday.
• highs near 67 lows near 55. (seasonal averages high 66 low 53)

________________

Forecast for the Cascades of Lane County:

• Mostly clear this evening, mostly cloudy late tonight.
• Mostly cloudy Saturday with a slight (20%) chance of showers in the afternoon and evening, mostly cloudy at night.
• Cloudy with a good (50%) chance of showers Sunday, mostly cloudy in the evening with a slight (20%) chance of showers, then mostly cloudy late Sunday night.
• A mix of clouds and sun Monday, partly cloudy with a slight (20%) chance of rain late Monday night.
• free air freezing level 13,000 ft. tonight, snow level above 8,000 ft. Saturday through Sunday night, free air freezing level 11,000 ft. Monday and Monday evening, then snow level above 8,000 ft. late Monday night.
• lows near 45 highs 65-60 warming to 66 Monday.
• Partly cloudy with a slight (20%) chance of rain Tuesday AM, partly cloudy in the afternoon and Tuesday night, a mix of clouds and sun Wednesday afternoon, partly cloudy Wednesday night. Partly cloudy with a slight (20%) chance of showers Thursday afternoon and evening, then partly cloudy Friday.
• snow level above 8,000 ft. Tuesday AM, free air freezing level 12,000 ft. Tuesday afternoon, 12,000 ft. rising to 13,000 ft. at night, 13,000 ft. Wednesday and  Wednesday night and Thursday AM, snow level above 8,000 ft. in the afternoon and evening, free air freezing level 12,000 ft. late Thursday night, then 12,000 ft. rising to 13,000 ft. Friday.
• highs 66-70 lows near 46.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at Eugene Daily News.com.

________________

_______________

Check out my latest Eugene Daily News Weather Or Not Column Remember What Don Essig Always Says. Really?

________________

Here is my new weekly weather quiz question. What is a “wall cloud?”  Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir, and now Fern Ridge Reservoir has been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low (“U” shape with blue arrows) is moving to the north away from us.  Now the upper airflow is moving from the south producing the chance of showers and thunderstorms as the upper low rides north. Another upper level low will move in along the coast continuing the normal to cooler than normal temperatures. The Eugene Celebration runs Friday through Sunday and so far the weather is looking pretty good. Look for cooler temperatures with just a slight chance of AM drizzle Saturday and a slight chance of a shower Sunday. With temperatures dropping from the heat we’ve been having to just a bit cooler than normal you will need to dress accordingly.

________________

The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Absent at 0 as of 8/22/13 according to Oregon Allergy Associates.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Cloudy this AM, partly cloudy this afternoon and evening, cloudy late tonight mostly cloudy with patchy drizzle Saturday AM, mostly cloudy in the afternoon and Saturday night, mostly cloudy with a slight (20%) chance of showers Sunday, then partly cloudy Sunday night.
• highs near 77 lows 57-52.
• Partly cloudy Monday and in the evening, Monday evening, mostly cloudy with a slight (20%) chance of rain late Monday night and Tuesday AM, a slight (20%) chance of showers in the afternoon and evening, mostly cloudy late Tuesday night and Wednesday AM, then a mix of clouds and sun Wednesday afternoon and Thursday while mostly cloudy Wednesday evening and partly cloudy late Wednesday night.
• highs near 80 lows near 52. (seasonal averages high 82 low 51)

________________

Forecast for the Umpqua Basin including Roseburg:

• Areas of smoke today, cloudy with patchy fog in the AM, partly cloudy with areas of smoke this afternoon and evening, mostly cloudy with patchy fog and areas of smoke late at night and Saturday AM, mostly cloudy with more smoke in the afternoon, mostly cloudy with areas of smoke Saturday night.
• Mostly cloudy with areas of AM smoke and a slight (20%) chance of a thunderstorm, mostly cloudy with a slight (20%) chance of showers Sunday afternoon, mostly cloudy in the evening, then partly cloudy late Sunday night.
•  highs 80-76 lows 58-55.
• Partly cloudy Monday and in the evening, mostly cloudy Monday night, mostly cloudy with a slight (20%) chance of showers Tuesday afternoon through Wednesday AM, then partly cloudy Wednesday night and Thursday.
• highs near 82 lows 58-54. (seasonal averages high 84 low 55)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with patchy AM fog and patchy coastal drizzle, mostly cloudy this afternoon, partly cloudy this evening, mostly cloudy with patchy fog and areas of drizzle late tonight.
• Mostly cloudy with patchy AM fog and patchy drizzle, mostly cloudy with patchy lingering fog Saturday and Saturday night. Mostly cloudy Sunday with patchy fog and a slight (20%) chance of AM showers inland, partly cloudy at night.
• highs 66-68 lows 56-53.
• Partly cloudy Monday AM, mostly cloudy in the afternoon, a slight (20%) chance of showers Monday night through Wednesday.
• Then partly cloudy Wednesday night and Thursday.
• highs near 67 lows near 55. (seasonal averages high 66 low 53)

________________

Forecast for the Cascades of Lane County:

• Partly cloudy today and this evening, mostly cloudy late tonight.
• Mostly cloudy Saturday with a (30%) chance of showers in the afternoon and a slight (20%) chance of showers Saturday night.
• Cloudy with a (40%) chance of showers Sunday, mostly cloudy in the evening with a slight (20%) chance of showers, then partly cloudy late Sunday night.
• free air freezing level 13,000 ft. today and tonight, snow level above 8,000 ft. Saturday through Sunday evening, free air freezing level 11,000 ft. late Sunday night.
• highs 67-63 lows near 45.
• Partly cloudy with with a slight (20%) chance of Monday and again late Monday night, partly cloudy with a slight (20%) chance of rain Tuesday AM, partly cloudy in the afternoon and Tuesday night, a mix of clouds and sun with a slight (20%) chance of showers Wednesday afternoon, partly cloudy with a slight (20%) chance of showers Wednesday evening, then partly cloudy Wednesday night and Thursday.
• snow level above 8,000 ft. Monday through Tuesday AM, free air freezing level 12,000 ft. Tuesday afternoon, 12,000 ft. rising to 13,000 ft. at night, 13,000 ft. Wednesday AM, snow level above 8,000 ft. Wednesday afternoon and evening, then free air freezing level 13,000 ft. late Wednesday night and Thursday.
• Highs 66-70 lows near 45.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at Eugene Daily News.com.

________________

_______________

Check out my latest Eugene Daily News Weather Or Not Column Remember What Don Essig Always Says. Really?

________________

Here is my new weekly weather quiz question. What is a “wall cloud?”  Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir, and now Fern Ridge Reservoir has been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low (“U” shape with blue arrows) is moving to the north away from us.  Now the upper airflow is moving from the south producing the chance of showers and thunderstorms as the upper low rides north. Another upper level low will move in along the coast continuing the normal to cooler than normal temperatures. The Eugene Celebration runs Friday through Sunday and so far the weather is looking pretty good. Look for cooler temperatures with just a slight chance of AM drizzle Saturday and a slight chance of a shower Sunday. With temperatures dropping from the heat we’ve been having to just a bit cooler than normal you will need to dress accordingly.

________________

The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Absent at 0 as of 8/22/13 according to Oregon Allergy Associates.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a slight (20%) chance of showers and thunderstorms this evening (under 0.10 in. of rain possible), partly cloudy late tonight.
• Cloudy Friday AM, partly cloudy Friday afternoon and evening, cloudy late Friday night and Saturday, mostly cloudy Saturday night and Sunday, then partly cloudy Sunday night.
• lows 57-52 highs 82-76.
• Partly cloudy with a slight (20%) chance of showers Monday afternoon, partly cloudy with a slight (20%) chance of showers in the evening, mostly cloudy with a slight (20%) chance of showers late Monday night and Tuesday AM, a mix of clouds and sun in the afternoon, mostly cloudy with a slight (20%) chance of showers in the evening, mostly cloudy late Tuesday night and Wednesday AM, then a mix of clouds and sun Wednesday afternoon and Thursday while mostly cloudy Wednesday evening and partly cloudy late Wednesday night.
• highs near 80 lows near 52. (seasonal averages high 83 low 51)

________________

Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy with a (40%) chance of isolated thunderstorms this evening (under 0.10 in. of rain possible), areas of smoke again late tonight.
• Areas of smoke Friday, mostly cloudy in the AM, partly cloudy with areas in the afternoon and evening, mostly cloudy with patchy fog and areas of smoke late at night and Saturday AM, mostly cloudy with more smoke in the afternoon.
• Mostly cloudy with areas of smoke Saturday night.
• Areas of AM smoke, mostly cloudy Sunday afternoon and evening, then partly cloudy late Sunday night.
• lows 59-53 highs 83-76.
• Partly cloudy Monday, mostly cloudy Monday night through Wednesday, then partly cloudy Wednesday night and Thursday.
• highs near 82 lows 53-56 cooling to 54 Wednesday night. (seasonal averages high 84 low 55)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy tonight and Friday AM, partly cloudy in the afternoon, mostly cloudy with patchy fog late Friday night.
• Mostly cloudy with patchy AM fog and patchy drizzle, mostly cloudy with patchy lingering fog Saturday through Sunday night.
• lows 56-53 highs 69-66.
• Partly cloudy Monday, Monday night through Wednesday.
• Then partly cloudy Wednesday night and Thursday.
• highs near 67 lows 53-55. (seasonal averages high 66 low 53)

________________

Forecast for the Cascades of Lane County:

• Mostly cloudy with a good (50%) chance of thunderstorms this evening, a slight (20%) chance of showers and thunderstorms late tonight (0.25 in. of rain possible, more in storms).
• Partly cloudy Friday and Friday evening, mostly cloudy late at night.
• Mostly cloudy Saturday with a slight (20%) chance of showers in the afternoon and Saturday night.
• Cloudy with a slight (20%) chance of thunderstorms Sunday, mostly cloudy in the evening with a slight (20%) chance of showers, then partly cloudy with a slight (20%) chance of showers late Sunday night.
• free air freezing level 13,000 ft. tonight through Friday night, snow level above 8,000 ft. Saturday and Saturday night, free air freezing level 12,000 ft. Sunday, snow level above 8,000 ft. Sunday night.
• lows 49-43 warming to 46 Sunday night highs 72-62.
• Partly cloudy with with a slight (20%) chance of showers Monday through Tuesday AM, partly cloudy in the afternoon and Tuesday night, a mix of clouds and sun Wednesday, then partly cloudy Wednesday night and Thursday.
• snow level above 8,000 ft. Monday through Tuesday AM, free air freezing level 12,000 ft. Tuesday afternoon, 12,000 ft. rising to 13,000 ft. at night, then 13,000 ft. Wednesday through Thursday.
• Highs 66-70 falling to 66 Wednesday then warming to near 70 Thursday lows near 45.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at Eugene Daily News.com.

________________

_______________

Check out my latest Eugene Daily News Weather Or Not Column Remember What Don Essig Always Says. Really?

________________

Here is my new weekly weather quiz question. What is a “wall cloud?”  Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir, and now Fern Ridge Reservoir has been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low (“U” shape with blue arrows) moved to the south away from us and now is moving northeastward through California. The upper airflow has been coming from just about due-West which is called “Zonal Flow.” Now the airflow has moved from the south producing the chance of showers and thunderstorms as the upper low rides north. The Eugene Celebration runs Friday through Sunday and so far the weather is looking pretty good. Look for cooler temperatures with just a slight chance of AM drizzle Saturday and a slight chance of a shower Sunday. Temperatures will drop from the heat we’ve been having to just a bit cooler than normal. Dress accordingly.

________________

The Grass Pollen Count is listed as Absent at 0 and Tree pollen is Absent at 0 as of 8/22/13 according to Oregon Allergy Associates.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• A mix of clouds and sun with a slight (20%) chance of isolated thunderstorms this afternoon (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of showers and thunderstorms this evening (under 0.10 in. of rain possible), mostly cloudy late tonight.
• Mostly cloudy Friday AM, partly cloudy Friday afternoon, mostly cloudy late Friday night, cloudy Saturday AM with patchy fog and drizzle, a mix of clouds and sun in the afternoon, partly cloudy in the evening, then mostly cloudy late Saturday night.
• highs 83-78 lows 57-54.
• Mostly cloudy Sunday with a slight (20%) chance of showers in the afternoon, partly cloudy Sunday night through Monday evening, mostly cloudy late Monday night and Tuesday AM, partly cloudy in the afternoon and Tuesday night, then a mix of clouds and sun Wednesday.
• highs 77-80 cooling to near 78 Wednesday lows near 52. (seasonal averages high 83 low 51)

________________

Forecast for the Umpqua Basin including Roseburg:

• Areas of AM smoke, mostly cloudy with a (40%) chance of isolated thunderstorms this afternoon (under 0.10 in. of rain possible) and a slight (20%) chance of thunderstorms this evening (under 0.10 in. of rain possible), areas of smoke again late tonight.
• Mostly cloudy with areas of smoke Friday AM, partly cloudy with areas of smoke in the afternoon and evening, mostly cloudy with patchy fog and areas of smoke late at night.
• Mostly cloudy with patchy AM fog and areas of smoke Saturday, then mostly cloudy with more patchy smoke and a slight (20%) chance of thunderstorms Saturday night.
• highs 89-77 lows 59-56.
• Mostly cloudy with areas of smoke and a slight (20%) chance of thunderstorms Sunday and Sunday evening, then partly cloudy late Sunday night through Wednesday.
• highs 80-83 lows 54-56. (seasonal averages high 84 low 55)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with patchy coastal fog this AM, a (30%) chance of isolated thunderstorms this AM, a (30%) chance of scattered thunderstorms this afternoon (under 0.10 in. of rain possible), mostly cloudy tonight and Friday, mostly cloudy with patchy fog late Friday night.
• Patchy AM fog and patchy drizzle, then mostly cloudy with patchy lingering fog Saturday and Saturday night.
• highs 65-68 lows 59-56.
• Patchy AM fog, mostly cloudy with patchy fog lingering fog Sunday, then just partly cloudy Sunday night through Wednesday.
• highs 69-67 lows 53-56. (seasonal averages high 66 low 53)

________________

Forecast for the Cascades of Lane County:

• Mostly cloudy with a good (50%) chance of showers and thunderstorms this AM, a good (50%) chance of showers and thunderstorms this afternoon and evening (0.10 in of rain possible, more in storms), mostly cloudy with a slight (20%) chance of showers and thunderstorms late tonight.
• Partly cloudy Friday and Friday night.
• A mix of clouds and sun Saturday with a slight (20%) chance of showers in the afternoon, partly cloudy with a slight (20%) chance of evening showers, then cloudy with a slight (20%) chance of showers late Saturday night.
• snow level above 8,000 ft. today and tonight, free air freezing level 13,000 ft. Friday and Friday night, snow level above 8,000 ft. Saturday and Saturday night.
• highs 72-67 lows 49-43.
• Cloudy Sunday with a slight (20%) chance of showers and thunderstorms Sunday, partly cloudy with a slight (20%) chance of showers in the evening, mostly cloudy with a slight (20%) chance of showers late Sunday night.
• Partly cloudy Monday through Wednesday.
• snow level above 8,000 ft. Sunday and Sunday evening, free air freezing level 11,000 ft. late Sunday night and Monday, 11,000 ft rising to 12,000 ft. late Monday night and Tuesday, 12,000 ft. rising to 13,000 ft. at night, then 13,000 ft. Wednesday.
• Highs 65-70 falling to 66 Wednesday lows near 45.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at Eugene Daily News.com.

________________

_______________

Check out my latest Eugene Daily News Weather Or Not Column Remember What Don Essig Always Says. Really?

________________

Here is my new weekly weather quiz question. What is a “wall cloud?”  Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir, and now Fern Ridge Reservoir has been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low (“U” shape with blue arrows) has moved to the south away from us and will move eastward through California. The upper airflow is coming from just about due-West which is called “Zonal Flow.” Next, the low off California will move northeastward producing the chance of showers and thunderstorms. The Eugene Celebration runs Friday through Sunday and so far the weather is looking good.

________________

The Grass Pollen Count is listed as Low at 2 and Tree pollen is Absent at 0 as of 8/17/13 according to Oregon Allergy Associates.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy tonight.
• Partly cloudy with a slight (20%) chance of thunderstorms in the afternoon Thursday, mostly cloudy with a slight (20%) chance of thunderstorms in the evening, mostly cloudy late Thursday night.
• Mostly cloudy Friday AM, partly cloudy Friday afternoon, mostly cloudy late Friday night and Saturday AM with patchy fog and drizzle, a mix of clouds and sun in the afternoon, partly cloudy in the evening, then mostly cloudy late Saturday night.
• lows 58-54 highs 86-78.
• (Get ready for some repetition) Mostly cloudy Sunday AM, partly cloudy in the afternoon and evening, mostly cloudy late Sunday night and Monday AM, partly cloudy in the afternoon and evening, mostly cloudy Monday night and Tuesday AM, partly cloudy in the afternoon and evening, mostly cloudy late Tuesday night and Wednesday AM, then partly cloudy Wednesday afternoon.
• highs 79-82 cooling to near 80 Wednesday lows near 53. (seasonal averages high 83 low 51)

________________

Forecast for the Umpqua Basin including Roseburg:

• Partly cloudy with areas of smoke and a slight (20%) chance of isolated thunderstorms tonight.
• Areas of AM smoke, mostly cloudy with a slight (20%) chance of isolated thunderstorms Thursday afternoon and evening, areas of smoke again late Thursday night.
• Mostly cloudy with areas of smoke Friday AM, partly cloudy with areas of smoke in the afternoon and evening, mostly cloudy with patchy fog and areas of smoke late at night.
• Mostly cloudy with patchy AM fog and areas of smoke Saturday, then mostly cloudy with more patchy smoke late Saturday night.
• lows 64-56 highs 84-77.
• Mostly cloudy with areas of smoke Sunday, then partly cloudy late Sunday night through Wednesday.
• highs 80-83 lows near 54. (seasonal averages high 84 low 55)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Partly cloudy this evening at the shore and mostly cloudy with coastal fog late tonight while just partly cloudy inland tonight.
• Mostly cloudy with patchy coastal fog Thursday AM, a slight (20%) chance of thunderstorms in the afternoon, mostly cloudy Thursday night and Friday, mostly cloudy with patchy fog late Friday night.
• Patchy AM fog, then mostly cloudy with patchy lingering fog Saturday and Saturday night.
• lows near 55 highs 64-67.
• Patchy AM fog, mostly cloudy with patchy fog lingering fog Sunday, then just partly cloudy Sunday night through Wednesday.
• highs 69-67 lows 53-55. (seasonal averages high 66 low 53)

________________

Forecast for the Cascades of Lane County:

• Partly cloudy with a slight (20%) chance of thunderstorms this evening, just partly cloudy late tonight.
• A mix of clouds and sun Thursday AM, becoming mostly cloudy with good (50%) chance of thunderstorms in the afternoon and evening, mostly cloudy with a slight (20%) chance of thunderstorms late Thursday night.
• Mostly cloudy Friday AM, mostly sunny in the afternoon, partly cloudy Friday night.
• A mix of clouds and sun Saturday, partly cloudy with a slight (20%) chance of evening showers, then just mostly cloudy late Saturday night.
• free air freezing level 15,000 ft. tonight and Thursday, 13,000 ft. falling to 12,000 ft. late Thursday night, 13,000 ft. Friday and Friday night, 12,000 ft. Saturday, snow level above 8,000 ft. Saturday evening, then free air freezing level 12,000 ft. late Saturday night.
• lows 54-47 highs 73-67.
• Mostly cloudy Sunday AM, a  mix of clouds and sun with a slight (20%) chance of showers Sunday afternoon, partly cloudy with a slight (20%) chance of showers in the evening, mostly cloudy with a slight (20%) chance of showers late Sunday night.
• A mix of clouds and sun with a slight (20%) chance of showers Monday, partly cloudy with a slight (20%) chance of showers in the evening, then partly cloudy late Monday night through Wednesday.
• free air freezing level 12,000 ft. Sunday AM, snow level above 8,000 ft. Sunday afternoon through Monday evening, then free air freezing level 12,000 ft. late Monday night and Tuesday afternoon.
• highs 67-70 cooling to 68 Tuesday lows 47-45.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at Eugene Daily News.com.

________________

_______________

Check out my latest Eugene Daily News Weather Or Not Column Remember What Don Essig Always Says. Really?

________________

Here is my new weekly weather quiz question. What is a “wall cloud?”  Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

________________

Advisories:

There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir, and now Fern Ridge Reservoir has been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.

________________

An upper level low (“U” shape with blue arrows) has moved to the south away from us and will move eastward through California. The upper airflow is coming from just about due-West which is called “Zonal Flow.” Next, the low off California will move northeastward producing the chance of showers and thunderstorms. The Eugene Celebration runs Friday through Sunday and so far the weather is looking good.

________________

The Grass Pollen Count is listed as Low at 2 and Tree pollen is Absent at 0 as of 8/17/13 according to Oregon Allergy Associates.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy and warm today,  partly cloudy tonight.
• Partly cloudy with a slight (20%) chance of showers in the afternoon Thursday, mostly cloudy in the evening, partly cloudy late Thursday night.
• Then a mix of clouds and sun Friday with increasing clouds from partly cloudy in the evening to cloudy by late Friday night.
• highs 90-83 lows 58-54.
• Cloudy with patchy fog and a slight (20%) chance of drizzle Saturday AM, partly cloudy in the afternoon and evening, mostly cloudy late Saturday night.
• Just a mix of clouds and sun Sunday and Monday with partly cloudy skies at night, then partly cloudy Monday night and Tuesday.
• highs 78-82 cooling to near 80 Tuesday lows 55-52. (seasonal averages high 83 low 51)

________________

Forecast for the Umpqua Basin including Roseburg:

• Partly cloudy with more patchy smoke and a slight (20%) chance of isolated thunderstorms this afternoon and tonight.
• Areas of AM smoke, mostly cloudy with a slight (20%) chance of isolated thunderstorms Thursday afternoon and evening, areas of smoke again late Thursday night.
• Mostly cloudy with areas of smoke Friday AM, partly cloudy with areas of smoke in the afternoon, mostly cloudy with patchy fog with areas of smoke Friday evening, patchy fog and areas of smoke continue late at night.
• highs 95-84 lows 63-56.
• Mostly cloudy with patchy AM fog and areas of smoke Saturday, mostly cloudy with more patchy smoke late Saturday night and Sunday, mostly cloudy in the evening, then partly cloudy late Sunday night through Tuesday.
• highs 83-80 warming to 84 Tuesday lows 58-52. (seasonal averages high 84 low 55)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Partly cloudy with patchy AM coastal fog today, partly cloudy this evening at the shore and cloudy with patchy coastal fog late tonight while partly cloudy inland tonight.
• Mostly cloudy with patchy coastal fog Thursday AM, partly cloudy in the afternoon, mostly cloudy Thursday night.
• Partly cloudy Friday, then mostly cloudy with patchy fog Friday night.
• highs 68-64 warming to 67 Friday lows 53-56.
• Mostly cloudy with patchy fog Saturday through Sunday, partly cloudy Sunday night through  Monday evening, mostly cloudy at night and Tuesday AM, then partly cloudy Tuesday afternoon.
• highs near 69 lows near 54. (seasonal averages high 66 low 53)

________________

Forecast for the Cascades of Lane County:

• A mix of clouds and sun with a slight (20%) chance of thunderstorms early this afternoon, a slight (20%) chance of showers and thunderstorms late this afternoon and  tonight.
• A mix of clouds and sun with a slight (20%) chance of showers and thunderstorms Thursday AM, a good (50%) chance of showers with a slight (20%) chance of  thunderstorms in the afternoon and evening, mostly cloudy with a slight (20%) chance of showers late Thursday night.
• Partly cloudy with a slight (20%) chance of AM showers, just partly cloudy Friday afternoon, then partly cloudy Friday night.
• snow level above 8,000 ft. today through Friday, then free air freezing level 12,000 ft. Friday night.
• highs 82-72 lows 54-49.
• A mix of clouds and sun with a slight (20%) chance of showers Saturday afternoon,  partly cloudy in  evening, then mostly cloudy with a slight (20%) chance of showers late Saturday night.
• A mix of clouds and sun with a slight (20%) chance of showers Sunday, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers late Sunday night.
• A mix of clouds and sun with a slight (20%) chance of showers Monday, partly cloudy with a slight (20%) chance of showers in the evening, then partly cloudy late Monday night, partly cloudy with a slight (20%) chance of showers Tuesday afternoon.
• free air freezing level 12,000 ft. in the AM, snow level above 8,000 ft. Saturday afternoon through Monday evening, free air freezing level 12,000 ft. late Monday night and Tuesday AM, then snow level above 8,000 ft. Tuesday afternoon.
• highs near 68 lows 49-45.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield and Lane County news on-line at Eugene Daily News.com.

________________