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It’s time for another weekly weather quiz question. Here it is. What are “GOES” and what do they do? 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.

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Advisories: A FROST ADVISORY IS IN EFFECT FROM 3 AM UNTIL 8 AM TUESDAY FOR THE KLAMATH BASIN.

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An upper level trough of low pressure (“U” shape in blue arrows and shaded) is moving through the Pacific Northwest and  with the help of a cold front brought a little rain to us this morning. A high pressure ridge (“Arch shape shaded grey and with blue arrows ”) will bring back the sunshine and warm us up a bit starting Tuesday, but the warming to more normal temperatures will take place Wednesday and Thursday.

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Forecast for the Umpqua Basin including Roseburg: Partly cloudy tonight, sunny Tuesday, Wednesday, and Thursday with clear skies at night lows 44-42 warming to 54 Wednesday night then near 50 Thursday night highs 77-92. Sunny Thursday and Friday with clear nights, mostly clear Friday night, then sunny Saturday through Monday with clear nights highs 90-80 warming to 85 Monday lows near 50. (seasonal averages high 81 low 52)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy this evening, partly cloudy tonight and Tuesday AM, sunny in the afternoon, mostly clear Tuesday night, sunny Wednesday, clear inland Wednesday night while mostly clear in the evening and mostly cloudy late night at the shore, sunny Thursday, then partly cloudy and cooler Thursday night lows 47-42 warming to 52 Thursday night highs 60-63. AM clouds, mostly sunny Friday afternoon, partly cloudy Friday night through Sunday night, mostly cloudy Monday AM, then sunny Monday afternoon highs near 63 lows near 50. (seasonal averages high 65 low 51).

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Forecast for the Cascades of Lane County: Mostly clear and colder tonight, sunny and warmer Tuesday, clear Tuesday night, sunny and warmer Wednesday, clear Wednesday night, sunny and warmer Thursday, then clear Thursday night free air freezing level 13,000 ft. tonight, 12,000 ft. rising to 13,000 ft. Tuesday afternoon, 13,000 ft. Tuesday night, then 14,000 ft. Wednesday through Thursday night lows 32-46 highs 65-78. Sunny Friday and Saturday (cooler Saturday) with clear nights, mostly sunny Sunday, clear at night, then sunny Monday free air freezing level 14,000 ft. Thursday, 14,000 ft. Friday, 13,000 ft. Friday night through Sunday night, then sunny Monday highs 79-68 lows 47-40 warming to 46 Sunday night.

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**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 news on-line at Eugene Daily News.com

________________

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It’s time for another weekly weather quiz question. Here it is. What are “GOES” and what do they do? 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.

________________

Advisories: A FREEZE WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

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An upper level trough of low pressure (“U” shape in blue arrows and shaded) is moving through the Pacific Northwest and will, with the help of a cold front is bringing a chance of us getting wet today. A high pressure ridge (“Arch shape shaded grey and with blue arrows ”) will bring back the sunshine and warm us up a bit.

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with patchy fog and a slight (20%) chance of showers this AM, mostly cloudy this afternoon, partly cloudy in the evening, mostly clear by late tonight, sunny Tuesday and Wednesday with clear skies at night lows 44-52 highs 74-86. Sunny Thursday and Friday with clear nights, mostly clear Friday night, then mostly sunny Saturday and Sunday with mostly clear nights highs 92-80 lows 50-48. (seasonal averages high 81 low 52)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy AM fog and a slight (20%) chance of showers, mostly cloudy in the afternoon and evening, partly cloudy Monday night and Tuesday AM, sunny in the afternoon, mostly clear inland Tuesday night, mostly clear in the evening and partly cloudy late Tuesday night at the shore, sunny Wednesday, then mostly clear Wednesday night highs 64-60 warming to 65 Wednesday lows 47-48. AM clouds, mostly sunny Thursday afternoon through Saturday with clear nights, then partly cloudy Saturday night and Sunday highs 62-60 warming to 63 Sunday lows near 48. (seasonal averages high 65 low 51).

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Forecast for the Cascades of Lane County: Cloudy and cooler with a good (50%) chance of showers this AM, a mix of clouds and sun with a slight (20%) chance of showers this afternoon, mostly clear and colder tonight, sunny and warmer Tuesday, clear Tuesday night, sunny and warmer Wednesday, then clear Wednesday night snow level above 8,000 ft. today, free air freezing level 13,000 ft. tonight, 12,000 ft. rising to 13,000 ft. Tuesday afternoon, then 13,000 ft. rising to 14,000 ft. Wednesday afternoon and Wednesday night highs 56-75 lows 36-42. Sunny and warmer Thursday and mostly clear at night, mostly sunny Friday through Sunday with mostly clear skies at night free air freezing level 14,000 ft. Thursday, 13,000 ft. Thursday night and Friday, 14,000 ft. Friday night, then 13,000 ft. Saturday through Sunday highs 79-68 lows 47-40.

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**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 news on-line at Eugene Daily News.com

________________

_______________

No winner this week. Here is my weekly weather quiz question for the last time. There are six different kinds of radar images. What are they? (Name as many as you can.)

There are six different types of images currently available for the RIDGE radar display: Base Reflectivity, Composite Reflectivity, Base Velocity, Storm Relative Motion, One-hour Precipitation and Storm Total Precipitation.

Base Reflectivity

This is a display of echo intensity (reflectivity) measured in dBZ (decibels of Z, where Z represents the energy reflected back to the radar). “Reflectivity” is the amount of transmitted power returned to the radar receiver. Base Reflectivity images are available at several different elevation angles (tilts) of the antenna and are used to detect precipitation, evaluate storm structure, locate atmospheric boundaries and determine hail potential.The base reflectivity image is from the lowest “tilt” angle (0.5°). This means the radar’s antenna is tilted 0.5° above the horizon. Learn more about Base Reflectivity.

Composite Reflectivity

This display is of maximum echo intensity (reflectivity) from any elevation angle at every range from the radar. This product is used to reveal the highest reflectivity in all echoes. When compared with Base Reflectivity, the Composite Reflectivity can reveal important storm structure features and intensity trends of storms. Learn more about composite reflectivity.

Base Velocity

This display of radial velocity represents the overall wind field. Green colors indicate wind moving toward the radar with red colors indicating wind moving away from the radar. The maximum range of this product is 124 nm (about 143 miles) from the radar location. Learn more about Base Velocity images.

Storm Relative Motion

This display is of radial velocity of the wind relative to the storm’s motion. The result is a picture of the wind as if the storms were stationary. This often unmasks storms that rotate (supercells) which can be a precursor to the formation of tornadoes. Green colors indicate wind moving toward the radar with red colors indicating wind moving away from the radar. The maximum range of this product is 124 nm (about 143 miles) from the radar location. Learn more about Storm Relative Motion images.

One-hour Precipitation

This is an image of estimated one-hour precipitation accumulation. This product is used to assess rainfall intensities for flash flood warnings, urban flood statements and special weather statements. The maximum range of this product is 124 nm (about 143 miles) from the radar location. This image will not display accumulated precipitation more distant than 124 nm, even though precipitation may be occurring at greater distances. To determine accumulated precipitation at greater distances you should link to an adjacent radar. Learn more about the one-hour precipitation image.

Storm Total Precipitation

This image is of estimated accumulated rainfall, continuously updated, since the last one-hour break in precipitation. This image is used to locate flood potential over urban or rural areas, estimate total basin runoff and provide rainfall accumulations for the duration of the event.The maximum range of this product is 124 nm (about 143 miles) from the radar location. This product will not display accumulated precipitation more distant than 124 nm, even though precipitation may be occurring at greater distances. To determine accumulated precipitation at greater distances link to an adjacent radar.

I’ll have a new weekly weather quiz question for you 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.

________________

Advisories: A FREEZE WATCH IS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

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An upper level trough of low pressure (“U” shape in blue arrows and shaded) is moving through the Pacific Northwest and will, with the help of a cold front , bring a chance of us getting wet tonight and Monday. A high pressure ridge (“Arch shape shaded grey and with blue arrows ” will bring back the sunshine and warm us up a bit.

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Forecast for the Umpqua Basin including Roseburg: Partly cloudy this evening, cloudy with patchy fog and a slight (20%) chance of showers tonight, mostly cloudy with patchy fog and a slight (20%) chance of rain Monday AM, a slight (20%) chance of showers in the afternoon, partly cloudy in the evening, mostly clear by late Monday night, sunny Tuesday and Wednesday with clear skies at night lows 52-44 warming to 52 Wednesday night highs 74-85. Sunny Thursday and Friday with clear nights, mostly clear Friday night, then mostly sunny Saturday and Sunday with mostly clear nights highs 92-80 lows 52-48. (seasonal averages high 81 low 53)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy coastal fog and a slight (20%) chance of showers tonight, mostly cloudy with patchy AM fog and a slight (20%) chance of rain, a slight (20%) chance of showers Monday afternoon, mostly cloudy in the evening, partly cloudy Monday night and Tuesday AM, sunny in the afternoon, mostly clear inland Tuesday night, mostly clear in the evening and partly cloudy late Tuesday night at the shore  lows 52-45 warming to 48 Wednesday night highs 64-60 warming to 65 Wednesday. Mostly sunny Thursday through Saturday with clear nights, then partly cloudy Saturday night and Sunday highs 62-60 warming to 63 Sunday lows near 48. (seasonal averages high 65 low 51).

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Forecast for the Cascades of Lane County: Partly cloudy this evening, mostly cloudy late tonight, cloudy and cooler with a good (50%) chance of showers Monday AM, a slight (20%) chance of showers in the afternoon, partly cloudy and colder Monday night, a mix of clouds and sun and warmer Tuesday, clear Tuesday night, sunny Wednesday, then clear Wednesday night free air freezing level 13,000 ft. tonight, snow level above 8,000 ft. Monday, free air freezing level 13,000 ft. Monday night, 12,000 ft. rising to 13,000 ft. Tuesday afternoon, then 14,000 ft. Wednesday and Wednesday night lows 39-35 rising to 42 Wednesday highs 52-75. Sunny and warmer Thursday and mostly clear at night, mostly sunny Friday through Sunday with mostly clear skies at night free air freezing level 13,000 ft. Wednesday, then 14,000 ft. Wednesday night through Sunday highs 79-68 lows 42-48 cooling to near 40 Saturday night.

________________

**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 news on-line at Eugene Daily News.com

________________

_______________

No winner this week. Here is my weekly weather quiz question for the last time. There are six different kinds of radar images. What are they? (Name as many as you can.)

There are six different types of images currently available for the RIDGE radar display: Base Reflectivity, Composite Reflectivity, Base Velocity, Storm Relative Motion, One-hour Precipitation and Storm Total Precipitation.

Base Reflectivity

This is a display of echo intensity (reflectivity) measured in dBZ (decibels of Z, where Z represents the energy reflected back to the radar). “Reflectivity” is the amount of transmitted power returned to the radar receiver. Base Reflectivity images are available at several different elevation angles (tilts) of the antenna and are used to detect precipitation, evaluate storm structure, locate atmospheric boundaries and determine hail potential.The base reflectivity image is from the lowest “tilt” angle (0.5°). This means the radar’s antenna is tilted 0.5° above the horizon. Learn more about Base Reflectivity.

Composite Reflectivity

This display is of maximum echo intensity (reflectivity) from any elevation angle at every range from the radar. This product is used to reveal the highest reflectivity in all echoes. When compared with Base Reflectivity, the Composite Reflectivity can reveal important storm structure features and intensity trends of storms. Learn more about composite reflectivity.

Base Velocity

This display of radial velocity represents the overall wind field. Green colors indicate wind moving toward the radar with red colors indicating wind moving away from the radar. The maximum range of this product is 124 nm (about 143 miles) from the radar location. Learn more about Base Velocity images.

Storm Relative Motion

This display is of radial velocity of the wind relative to the storm’s motion. The result is a picture of the wind as if the storms were stationary. This often unmasks storms that rotate (supercells) which can be a precursor to the formation of tornadoes. Green colors indicate wind moving toward the radar with red colors indicating wind moving away from the radar. The maximum range of this product is 124 nm (about 143 miles) from the radar location. Learn more about Storm Relative Motion images.

One-hour Precipitation

This is an image of estimated one-hour precipitation accumulation. This product is used to assess rainfall intensities for flash flood warnings, urban flood statements and special weather statements. The maximum range of this product is 124 nm (about 143 miles) from the radar location. This image will not display accumulated precipitation more distant than 124 nm, even though precipitation may be occurring at greater distances. To determine accumulated precipitation at greater distances you should link to an adjacent radar. Learn more about the one-hour precipitation image.

Storm Total Precipitation

This image is of estimated accumulated rainfall, continuously updated, since the last one-hour break in precipitation. This image is used to locate flood potential over urban or rural areas, estimate total basin runoff and provide rainfall accumulations for the duration of the event.The maximum range of this product is 124 nm (about 143 miles) from the radar location. This product will not display accumulated precipitation more distant than 124 nm, even though precipitation may be occurring at greater distances. To determine accumulated precipitation at greater distances link to an adjacent radar.

I’ll have a new weekly weather quiz question for you next 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.

________________

Advisories: NOT AT THIS TIME.

________________

An upper level trough of low pressure (“U” shape in blue arrows and shaded) off the coast and sliding through Oregon is changing our weather as the high pressure ridge moves away bringing more of the cool-down, and a frontal system will move in from the  Monday for a slight chance of light rain or drizzle. Another trough of low pressure will move down from the Gulf of Alaska Monday, then high pressure will return for your Tuesday.

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Forecast for the Umpqua Basin including Roseburg: Cloudy this AM, partly cloudy this afternoon and evening, cloudy with patchy fog late and a slight (20%) chance of showers tonight and Monday AM, partly cloudy with a slight (20%) chance of rain in the afternoon, partly cloudy Monday night, sunny Tuesday, then clear Tuesday night highs 76-72 warming to 75 Tuesday lows 52-42. Sunny Wednesday and through Friday with clear nights, then mostly sunny Saturday highs 85-90 cooling to near 82 Saturday lows 48-52. (seasonal averages high 81 low 53)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy fog this AM, cloudy inland, mostly cloudy with a slight (20%) chance of coastal showers and some lingering fog this afternoon, mostly cloudy with patchy fog and a slight (20%) chance of coastal showers tonight, patchy fog late inland too, cloudy with patchy AM fog and a slight (20%) chance of showers Monday, a slight (20%) chance of rain in the afternoon, mostly cloudy Monday night, partly cloudy Tuesday, clear in the evening then partly cloudy Tuesday night highs 64-60 lows 52-45 . Partly cloudy and warmer Wednesday, mostly clear Wednesday night, then mostly sunny Thursday and Friday, mostly clear at night, sunny in the AM, then partly cloudy Saturday highs 62-66 cooling to 63 Saturday lows 48-50. (seasonal averages high 65 low 51).

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Forecast for the Cascades of Lane County: A mix of clouds and sun and much cooler today with partly cloudy skies near the crest, partly cloudy this evening, mostly cloudy with a slight (20%) chance of rain late tonight, cloudy and cooler with a good (50%) chance of showers Monday AM, a slight (20%) chance of showers in the afternoon, partly cloudy and colder Monday night, mostly sunny and warmer Tuesday, then mostly clear Tuesday night free air freezing level 12,000 ft. today rising to 13,000 ft. this afternoon, snow level above 8,000 ft. tonight and Monday, then free air freezing level 13,000 ft. rising to 12,000 ft. Monday night through Tuesday, then 13,000 ft. Tuesday night lows 39-34 warming to 36 Tuesday night highs 63-52 warming to near 65 Tuesday. Sunny and warmer Wednesday and Thursday and mostly clear at night, then mostly sunny Friday and Saturday with mostly clear skies Friday night free air freezing level 13,000 ft. Wednesday, then 14,000 ft. Wednesday night through Saturday highs 74-78 cooling to 72 Friday lows 35-46 cooling to near 70 Friday night.

________________

**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 news on-line at Eugene Daily News.com

________________

_______________

No winner this week. Here is my weekly weather quiz question for the last time. There are six different kinds of radar images. What are they? (Name as many as you can.)

There are six different types of images currently available for the RIDGE radar display: Base Reflectivity, Composite Reflectivity, Base Velocity, Storm Relative Motion, One-hour Precipitation and Storm Total Precipitation.

Base Reflectivity

This is a display of echo intensity (reflectivity) measured in dBZ (decibels of Z, where Z represents the energy reflected back to the radar). “Reflectivity” is the amount of transmitted power returned to the radar receiver. Base Reflectivity images are available at several different elevation angles (tilts) of the antenna and are used to detect precipitation, evaluate storm structure, locate atmospheric boundaries and determine hail potential.The base reflectivity image is from the lowest “tilt” angle (0.5°). This means the radar’s antenna is tilted 0.5° above the horizon. Learn more about Base Reflectivity.

Composite Reflectivity

This display is of maximum echo intensity (reflectivity) from any elevation angle at every range from the radar. This product is used to reveal the highest reflectivity in all echoes. When compared with Base Reflectivity, the Composite Reflectivity can reveal important storm structure features and intensity trends of storms. Learn more about composite reflectivity.

Base Velocity

This display of radial velocity represents the overall wind field. Green colors indicate wind moving toward the radar with red colors indicating wind moving away from the radar. The maximum range of this product is 124 nm (about 143 miles) from the radar location. Learn more about Base Velocity images.

Storm Relative Motion

This display is of radial velocity of the wind relative to the storm’s motion. The result is a picture of the wind as if the storms were stationary. This often unmasks storms that rotate (supercells) which can be a precursor to the formation of tornadoes. Green colors indicate wind moving toward the radar with red colors indicating wind moving away from the radar. The maximum range of this product is 124 nm (about 143 miles) from the radar location. Learn more about Storm Relative Motion images.

One-hour Precipitation

This is an image of estimated one-hour precipitation accumulation. This product is used to assess rainfall intensities for flash flood warnings, urban flood statements and special weather statements. The maximum range of this product is 124 nm (about 143 miles) from the radar location. This image will not display accumulated precipitation more distant than 124 nm, even though precipitation may be occurring at greater distances. To determine accumulated precipitation at greater distances you should link to an adjacent radar. Learn more about the one-hour precipitation image.

Storm Total Precipitation

This image is of estimated accumulated rainfall, continuously updated, since the last one-hour break in precipitation. This image is used to locate flood potential over urban or rural areas, estimate total basin runoff and provide rainfall accumulations for the duration of the event.The maximum range of this product is 124 nm (about 143 miles) from the radar location. This product will not display accumulated precipitation more distant than 124 nm, even though precipitation may be occurring at greater distances. To determine accumulated precipitation at greater distances link to an adjacent radar.

I’ll have a new weekly weather quiz question for you next 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.

________________

Advisories: NOT AT THIS TIME.

________________

An upper level trough of low pressure (“U” shape in blue arrows and shaded) off the coast is changing our weather as the high pressure ridge moves away starting the cool-down, and a frontal system will move in from the  Monday for a slight chance of light rain or drizzle. Another trough will move down from the Gulf of Alaska Monday, then high pressure will return for your Tuesday.

________________

_______________

Forecast for the Umpqua Basin including Roseburg: Partly cloudy this evening, mostly cloudy tonight, cloudy Sunday AM, partly cloudy in the afternoon and evening, cloudy with patchy fog late and a slight (20%) chance of showers Sunday night and Monday AM, partly cloudy with a slight (20%) chance of rain in the afternoon, mostly cloudy Monday evening, clearing at night, sunny Tuesday, then clear Tuesday night lows 52-42 highs 76-72 warming to 75 Tuesday. Sunny Wednesday through Friday with clear nights, then mostly sunny Saturday highs 85-90 cooling to near 82 Saturday lows 42-52. (seasonal averages high 81 low 53)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy fog late tonight and Sunday AM, cloudy inland, mostly cloudy with a slight (20%) chance of coastal showers and some lingering fog Sunday afternoon, mostly cloudy with patchy fog and a slight (20%) chance of coastal showers Sunday night, patchy fog late inland too, cloudy with patchy AM fog and a slight (20%) chance of showers Monday, a slight (20%) chance of rain in the afternoon, mostly cloudy Monday night, partly cloudy Tuesday, clear in the evening then partly cloudy Tuesday night lows 52-45 highs 64-60. Partly cloudy and warmer Wednesday, mostly clear Wednesday night, then mostly sunny Thursday through Saturday with mostly clear nights highs 62-66 cooling to 63 Saturday lows 48-50. (seasonal averages high 66 low 51).

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Forecast for the Cascades of Lane County: Partly cloudy with a slight (20%) chance of thunderstorms this evening, partly cloudy and colder tonight, a mix of clouds and sun and much cooler Sunday, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain late Sunday night, cloudy and cooler with a good (50%) chance of showers Monday AM, a slight (20%) chance of showers in the afternoon, partly cloudy and colder Monday night, mostly sunny Tuesday, then mostly clear Tuesday night free air freezing level 14,000 ft. tonight, 12,000 ft. Sunday, snow level above 8,000 ft. Sunday night and Monday, then free air freezing level 12,000 ft. Monday night through Tuesday night lows 42-32 warming to 35 Tuesday night highs 59-52 warming to near 70 Tuesday. Sunny and warmer Wednesday and Thursday and mostly clear at night, then mostly sunny Friday and Saturday with mostly clear skies Friday night free air freezing level 13,000 ft. Wednesday, then 14,000 ft. Wednesday night through Saturday highs 72-78 cooling to 72 Friday lows 35-46 cooling to near 70 Friday night.

________________

**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 news on-line at Eugene Daily News.com

________________

_______________

No winner this week. Here is my weekly weather quiz question for the last time. There are six different kinds of radar images. What are they? (Name as many as you can.)

There are six different types of images currently available for the RIDGE radar display: Base Reflectivity, Composite Reflectivity, Base Velocity, Storm Relative Motion, One-hour Precipitation and Storm Total Precipitation.

Base Reflectivity

This is a display of echo intensity (reflectivity) measured in dBZ (decibels of Z, where Z represents the energy reflected back to the radar). “Reflectivity” is the amount of transmitted power returned to the radar receiver. Base Reflectivity images are available at several different elevation angles (tilts) of the antenna and are used to detect precipitation, evaluate storm structure, locate atmospheric boundaries and determine hail potential.The base reflectivity image is from the lowest “tilt” angle (0.5°). This means the radar’s antenna is tilted 0.5° above the horizon. Learn more about Base Reflectivity.

Composite Reflectivity

This display is of maximum echo intensity (reflectivity) from any elevation angle at every range from the radar. This product is used to reveal the highest reflectivity in all echoes. When compared with Base Reflectivity, the Composite Reflectivity can reveal important storm structure features and intensity trends of storms. Learn more about composite reflectivity.

Base Velocity

This display of radial velocity represents the overall wind field. Green colors indicate wind moving toward the radar with red colors indicating wind moving away from the radar. The maximum range of this product is 124 nm (about 143 miles) from the radar location. Learn more about Base Velocity images.

Storm Relative Motion

This display is of radial velocity of the wind relative to the storm’s motion. The result is a picture of the wind as if the storms were stationary. This often unmasks storms that rotate (supercells) which can be a precursor to the formation of tornadoes. Green colors indicate wind moving toward the radar with red colors indicating wind moving away from the radar. The maximum range of this product is 124 nm (about 143 miles) from the radar location. Learn more about Storm Relative Motion images.

One-hour Precipitation

This is an image of estimated one-hour precipitation accumulation. This product is used to assess rainfall intensities for flash flood warnings, urban flood statements and special weather statements. The maximum range of this product is 124 nm (about 143 miles) from the radar location. This image will not display accumulated precipitation more distant than 124 nm, even though precipitation may be occurring at greater distances. To determine accumulated precipitation at greater distances you should link to an adjacent radar. Learn more about the one-hour precipitation image.

Storm Total Precipitation

This image is of estimated accumulated rainfall, continuously updated, since the last one-hour break in precipitation. This image is used to locate flood potential over urban or rural areas, estimate total basin runoff and provide rainfall accumulations for the duration of the event.The maximum range of this product is 124 nm (about 143 miles) from the radar location. This product will not display accumulated precipitation more distant than 124 nm, even though precipitation may be occurring at greater distances. To determine accumulated precipitation at greater distances link to an adjacent radar.

I’ll have a new weekly weather quiz question for you next 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.

________________

Advisories: NOT AT THIS TIME.

________________

A high pressure ridge (“Arch” shape in blue arrows offshore) kept us hot for a while. An upper level trough of low pressure (“U” shape in blue arrows and shaded) off the Oregon coast is changing our weather as the ridge moves away starting the cool-down, then a frontal system will move in from the northwest Sunday night and Monday for a slight chance of light rain or drizzle.

________________

_______________

Forecast for the Umpqua Basin including Roseburg: Sunny and cooler this afternoon, partly cloudy this evening, mostly cloudy tonight and Sunday, mostly cloudy with patchy fog late and a slight (20%) chance of rain Sunday night, patchy AM fog, cloudy with a slight chance of showers Monday AM, partly cloudy with a slight (20%) chance of showers in the afternoon, then mostly cloudy Monday evening and partly cloudy Monday night highs near 86-72 lows 52-42. Sunny Tuesday and Wednesday, clear at night, then sunny and even warmer Thursday and Friday highs 76-90 cooling to near 85 Friday lows 42-50. (seasonal averages high 81 low 53)

_________________

Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy coastal fog this AM and partly cloudy this afternoon, party cloudy this afternoon inland, partly cloudy in the evening, mostly cloudy with patchy coastal fog late tonight and Sunday AM, mostly cloudy with a slight (20%) chance of showers with some lingering fog, mostly cloudy with patchy fog and a slight (20%) chance of showers late Sunday night, cloudy with patchy AM fog Monday highs 62-50 lows 52-47. with a slight (20%) chance of lAM showers and a slight (20%) chance of light rain or drizzle Monday afternoon, mostly cloudy cloudy Tuesday, partly cloudy Tuesday night and Wednesday, mostly clear Wednesday night, then mostly sunny Thursday and Friday and mostly clear Thursday night highs 62-66 lows 46-49. (seasonal averages high 66 low 51).

________________

Forecast for the Cascades of Lane County: Mostly sunny and a bit cooler today, partly cloudy with a slight (20%) chance of thunderstorms this evening, partly cloudy and colder tonight, a mix of clouds and sun and much cooler Sunday, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain late Sunday night, cloudy and cooler with a good (50%) chance of showers Monday AM, a slight (20%) chance of showers in the afternoon, then partly Monday night free air freezing level 14,000 ft. today and tonight, 12,000 ft. Sunday snow level above 8,000 ft. Sunday night and Monday, then free air freezing level 12,000 ft. Monday night highs 76-53 lows 44-32. Partly cloudy  Tuesday AM, mostly sunny and warmer Tuesday afternoon, mostly clear Tuesday night, sunny and warmer Wednesday and Thursday and mostly clear at night, then mostly sunny Friday free air freezing level 11,000 ft. rising to 12,000 ft. Tuesday afternoon, 13,000 ft. Tuesday night and Wednesday, then 14,000 ft. Wednesday night through Friday highs 64-78 lows 35-42.

________________

**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 news on-line at Eugene Daily News.com

________________

_______________

Here is my weekly weather quiz question. Remember, this is your last chance to win this week. There are six different kinds of radar images. What are they? (Name as many as you can.) 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: NOT AT THIS TIME.

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A high pressure ridge (“Arch” shape in blue arrows offshore) will kept us hot. An upper level trough of low pressure (“U” shape in blue arrows and shaded) in the Gulf of Alaska will start to change our weather as the ridge moves away. A frontal system will slide into Oregon Saturday starting the cool-down, then another frontal system (shown to the northwest) will move in from the northwest Sunday night and Monday for a slight chance of light rain or drizzle.

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Forecast for the Umpqua Basin including Roseburg: Clear with patchy fog late tonight and Saturday AM, sunny and cooler in the afternoon, clear in the evening, mostly cloudy Saturday night, cloudy Sunday AM, sunny in the afternoon, then mostly cloudy with patchy fog late and a slight (20%) chance of rain Sunday night, patchy AM fog, cloudy with a slight chance of rain Monday, then mostly cloudy Monday night lows 55-42 highs near 87-72.Sunny Tuesday and Wednesday, clear at night, then sunny and even warmer Thursday and Friday highs 76-90 cooling to near 85 Friday lows 42-50. (seasonal averages high 81 low 53)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy inland tonight, mostly cloudy with patchy coastal fog late tonight and Saturday AM, sunny Saturday afternoon inland, mostly cloudy at the beaches, partly cloudy in the evening, mostly cloudy with patchy coastal fog late Saturday night and Sunday AM, mostly cloudy with a slight (20%) chance of AM rain, partly cloudy with a slight (20%) chance of  afternoon showers with some lingering fog, mostly cloudy with patchy fog and a slight (20%) chance of light rain late Sunday night, cloudy with patchy AM fog Monday,  lows 53-48 highs near 62. Patchy AM fog, cloudy with with a slight (20%) chance of light rain or drizzle Monday, mostly cloudy cloudy Tuesday, partly cloudy Tuesday night and Wednesday, mostly clear Wednesday night, then mostly sunny Thursday and Friday highs 62-66 lows 46-49. (seasonal averages high 66 low 51).

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Forecast for the Cascades of Lane County: Mostly clear tonight, mostly sunny and a bit cooler Saturday, partly cloudy and colder Saturday night, a mix of clouds and sun and much cooler Sunday, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain late Sunday night, cloudy and cooler with a (40%) chance of showers Monday AM, a slight (20%) chance of showers in the afternoon, cloudy in the evening, then partly Monday night free air freezing level 13,000 ft. tonight, 14,000 ft. and Saturday night, 12,000 ft. Sunday, snow level above 8,000 ft. Sunday night and Monday, then free air freezing level 11,000 ft. Monday night lows 48-38 highs 79-52. Partly cloudy  Tuesday AM, mostly sunny and warmer Tuesday afternoon, mostly clear Tuesday night, sunny and warmer Wednesday and Thursday and mostly clear at night, then mostly sunny Friday free air freezing level 11,000 ft. rising to 12,000 ft. Tuesday afternoon, 12,000 ft. Tuesday night, 13,000 ft. Wednesday, then 14,000 ft. Wednesday night and Friday highs 63-80 lows 35-42.

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**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.

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

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Here is my weekly weather quiz question. Remember, today is your last chance to win this week. There are six different kinds of radar images. What are they? (Name as many as you can.) 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.

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Advisories: NOT AT THIS TIME.

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A high pressure ridge (“Arch” shape in blue arrows offshore) will keep us hot through today. An upper level trough of low pressure (“U” shape in blue arrows and shaded) in the Gulf of Alaska will start to chance our weather as the ridge moves away. A frontal system will slide into Oregon Saturday starting the cool-down, then another frontal system (shown to the northwest) will move in from the northwest Sunday night and Monday for a slight chance of light rain or drizzle.

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Forecast for the Umpqua Basin including Roseburg: Areas of smoke this AM, sunny and hot today, mostly clear with patchy fog late tonight and Saturday AM, sunny and cooler in the afternoon, clear in the evening, mostly cloudy Saturday night, cloudy Sunday AM, sunny in the afternoon, then mostly cloudy with patchy fog late Sunday night highs near 92-80 lows 55-50. Cloudy with patchy AM fog, a slight (20%) chance of light rain or drizzle Monday afternoon, cloudy Monday night, mostly cloudy Tuesday, clear Tuesday night, sunny and warmer Wednesday, clear Wednesday night, then sunny and even warmer Thursday highs 74-88 lows 47-52. (seasonal averages high 81 low 53)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy coastal fog this AM, sunny this afternoon, partly cloudy inland at night, mostly cloudy with patchy coastal fog late tonight and Saturday AM, sunny Saturday afternoon, partly cloudy in the evening, mostly cloudy with patchy fog late Saturday night and Sunday AM, mostly cloudy in the afternoon, then mostly cloudy with patchy fog and drizzle late Sunday night highs 60-62 lows 50-48. Patchy AM fog, cloudy with with a slight (20%) chance of light rain or drizzle Monday, cloudy Monday night, mostly cloudy Tuesday, partly cloudy Tuesday night and Wednesday, mostly clear Wednesday night, then mostly cloudy Thursday highs 63-65 lows near 49. (seasonal averages high 66 low 51).

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Forecast for the Cascades of Lane County: Sunny and warmer today, mostly clear tonight, mostly sunny and a bit cooler Saturday, mostly clear Saturday night, a mix of clouds and sun and much cooler Sunday, then mostly cloudy with a slight (20%) chance of rain Sunday night free air freezing level 14,000 ft. today through Saturday night, 13,000 ft. Sunday, then snow level above 8,000 ft. Sunday night highs 80-66 lows 48-40. Cloudy and cooler with a (30%) chance of rain Monday AM, as slight (20%) chance of showers in the afternoon, cloudy in the evening, partly Monday night, a mix of clouds and sun Tuesday AM, mostly sunny and warmer Tuesday afternoon, mostly clear Tuesday night, then sunny and warmer Wednesday and Thursday and clear Wednesday night snow level above 8,000 ft. Monday, free air freezing level 11,000 ft. Monday night, 10,000 ft. rising to 11,000 ft. Tuesday, 12,000 ft. Tuesday night, 13,000 ft. Wednesday, then 14,000 ft. Wednesday night and Thursday highs 55-72 lows 33-45.

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**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 news on-line at Eugene Daily News.com

________________

_______________

Here is my weekly weather quiz question. There are six different kinds of radar images. What are they? (Name as many as you can.) 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: NOT AT THIS TIME.

________________

A high pressure ridge (“Arch” shape in blue arrows offshore) will keep us hot through Friday. An upper level trough of low pressure (“U” shape in blue arrows and shaded) in the Gulf of Alaska will start to chance our weather as the ridge moves away. A frontal system will slide into Oregon Saturday starting the cool-down, then another frontal system (shown to the northwest) will move in from the northwest Sunday night and Monday for a slight chance of light rain or drizzle.

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Forecast for the Umpqua Basin including Roseburg: Clear tonight, sunny and hot Friday, mostly clear with patchy fog late Friday night and Saturday AM, sunny and cooler in the afternoon, clear in the evening, mostly cloudy Saturday night, cloudy Sunday AM, sunny in the afternoon, then mostly cloudy with patchy fog late Sunday night lows 55-50 highs near 92-80. Cloudy with patchy AM fog, a slight (20%) chance of light rain or drizzle Monday afternoon, cloudy Monday night, mostly cloudy Tuesday, clear Tuesday night, sunny and warmer Wednesday, clear Wednesday night, then sunny and even warmer Thursday highs 74-88 lows 47-52. (seasonal averages high 81 low 53)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly clear inland tonight, mostly cloudy with patchy coastal fog late tonight and Friday AM, sunny Friday afternoon, partly cloudy inland at night, mostly cloudy with patchy coastal fog late Friday night and Saturday AM, sunny Saturday afternoon, partly cloudy in the evening, mostly cloudy with patchy fog late Saturday night and Sunday AM, mostly cloudy in the afternoon, then mostly cloudy with patchy fog and drizzle late Sunday night lows 50-48 highs 63-65. Patchy AM fog, cloudy with with a slight (20%) chance of light rain or drizzle Monday, cloudy Monday night, mostly cloudy Tuesday, partly cloudy Tuesday night and Wednesday, mostly clear Wednesday night, then mostly cloudy Thursday highs 63-65 lows near 49. (seasonal averages high 66 low 51).

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Forecast for the Cascades of Lane County: Mostly clear tonight, sunny and warmer Friday, mostly clear Friday night, sunny and a bit cooler Saturday, mostly clear Saturday night, a mix of clouds and sun and much cooler Sunday, then mostly cloudy Sunday night free air freezing level 14,000 ft. tonight and Friday, 13,000 ft. Friday night, 14,000 ft. Saturday and Saturday night, then 13,000 ft. Sunday and Sunday night lows 46-40 highs 80-66. Cloudy with a slight (20%) chance of rain Monday AM, cloudy and much cooler in the afternoon, a slight (20%) chance of showers Monday night, AM clouds, mostly sunny and warmer Tuesday afternoon, mostly clear Tuesday night, then sunny and warmer Wednesday and Thursday and clear Wednesday night snow level above 8,000 ft. Monday, free air freezing level 11,000 ft. Monday night, 12,000 ft. Tuesday, 13,000 ft. Tuesday night, 12,000 ft. Wednesday, 14,000 ft. Wednesday night, then 13,000 ft. Thursday highs 55-72 lows 33-45.

________________

**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 news on-line at Eugene Daily News.com

________________

_______________

Here is my weekly weather quiz question. There are six different kinds of radar images. What are they? (Name as many as you can.) 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: NOT AT THIS TIME.

________________

A high pressure ridge (“Arch” shape in blue arrows offshore) will keep us hot through Friday. A frontal system will slide into Oregon Saturday starting the cool-down, then another frontal system (shown to the northwest) will move in Sunday night and Monday for a slight chance of light rain or drizzle.

________________

_______________

Forecast for the Umpqua Basin including Roseburg: Partly cloudy with patchy fog this AM, sunny and hot this afternoon, clear tonight, sunny and hot Friday, mostly clear in  the evening, partly cloudy with patchy fog late Friday night and Saturday AM, sunny and cooler in the afternoon, then mostly clear Saturday night highs near 88-92 cooling to 85 Saturday lows 55-52. Cloudy and cooler Sunday, partly cloudy with patchy fog late Sunday night, cloudy Monday AM with with patchy fog and a slight (20%) chance of drizzle, a slight (20%) chance of rain Monday afternoon, partly cloudy Monday night, sunny Tuesday, clear Tuesday night, then sunny and warmer Wednesday highs 79-73 warming to 82 Wednesday lows 52-47. (seasonal averages high 81 low 53)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy fog early this AM, sunny inland this afternoon, mostly clear inland tonight, mostly cloudy with patchy coastal fog late tonight and Friday AM, mostly cloudy Friday afternoon at the beaches and sunny inland, partly cloudy inland at night, mostly cloudy with patchy coastal fog late Friday night and Saturday AM, sunny Saturday afternoon, partly cloudy in the evening, then mostly cloudy with patchy fog Saturday night highs 59-64 lows near 50. Patchy AM fog, cloudy Sunday afternoon, mostly cloudy with with patchy fog and a slight (20%) chance of drizzle late Sunday night and Monday AM, a slight (20%) chance of rain Monday afternoon, partly cloudy at night, mostly sunny Tuesday, mostly clear at night, then partly cloudy Wednesday highs 64-62 lows 50-48. (seasonal averages high 66 low 51).

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Forecast for the Cascades of Lane County: Sunny and mild today, mostly clear tonight, mostly sunny and warmer Friday, mostly clear Friday night, sunny Saturday AM, then partly cloudy Saturday afternoon and Saturday night free air freezing level 13,000 ft. today through Friday, 14,000 ft. Friday night, 14,000 ft. Saturday and 13,000 ft. Saturday night highs 76-80 cooling to 75 Saturday lows 46-40. A mix of clouds and sun Sunday, mostly cloudy with a slight (20%) chance of rain Sunday night and Monday AM, partly cloudy with a slight (20%) chance of showers Monday night, mostly sunny Tuesday, clear Tuesday night, then sunny Wednesday free air freezing level 12,000 ft. Sunday, snow level above 8,000 ft. Sunday night through Monday night, free air freezing level 12,000 ft. Tuesday, 13,000 ft. Tuesday night, then 14,000 ft. Wednesday highs 66-73 lows 40-35 warming to near 40 Tuesday night.

________________

**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 news on-line at Eugene Daily News.com

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