Here is my weekly weather quiz question. What are “Stoplogs?” 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.

________________

Upper level High Pressure (“Arch” shape in blue arrows) takes over for a while. An upper level low (Shaded “U” shape with blue arrows) will move up to the coast by the end of the week returning the northwest airflow and at least a slight chance of showers by Monday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 31 in the good category measuring Ozone.

Oakridge: The Air Quality Index is 9 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 32 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

 

Advisories:

• A Blue-Green Algae health advisory is in effect for Howard Bay (sometimes called Howards Bay or Howard’s Bay) in Upper Klamath Lake. It now includes all of Agency and Upper Klamath Lakes. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sensitivities may experience a puffy, red rash at the affected area.
• A Blue-Green Algae health advisory HAS BEEN LIFTED for the Metolius Arm of Lake Billy Chinook from Perry South Campground to and including the area around Three Rivers Marina, located about 12 miles Southwest of Madras in Jefferson County. It also includes the Crooked River Arms. Tests prove that the toxin levels have dropped to a safe level for humans, but pets still should be kept away from the water at this time.

________________

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

• Mostly clear this evening, mostly cloudy late tonight,
• AM clouds, partly cloudy and a bit cooler Saturday and in the evening, mostly cloudy late Saturday night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday afternoon, partly cloudy with a (40%) chance of showers in the evening, mostly cloudy with a (40%) chance of showers Sunday night,
• Mostly cloudy with a (30%) chance of AM showers, slight (20%) chance of showers Monday afternoon, a (30%) chance of evening showers, then a slight (20%) chance of showers late at night.
• lows 53-55 highs 77-75.
• A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Tuesday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy Tuesday night,
• A mix of clouds and sun Wednesday AM, mostly sunny and a bit warmer in the afternoon, then partly cloudy Wednesday night through Friday (a bit warmer).
• highs 77-83 lows near 54. (seasonal averages high 83 low 52)

 

_____

Eugene-Springfield Pollen Count:

Grass………. Moderate (16)

Trees………. Low (2)

Last Counted: 7/12/16

Data Courtesy of Oregon Allergy Associates.

___________________

Forecast for Roseburg:

• Clear this evening, mostly cloudy with a slight (20%) chance of rain and drizzle late tonight and Saturday AM, becoming sunny and a bit cooler in the afternoon, partly cloudy in the evening, then mostly cloudy with a slight (20%) chance of rain and drizzle late Saturday night and Sunday AM, a slight (20%) chance of showers in the afternoon, mostly cloudy with a (30%) chance of showers Sunday night,
• Mostly cloudy with a (30%) chance of showers Monday, then a slight (20%) chance of showers Monday night.
• lows near 56 highs near 78.
• Mostly cloudy with a slight (20%) chance of showers Tuesday, then just partly cloudy and a bit warmer Tuesday night through Friday.
• highs 80-82 cooling back to 80 Friday lows near 55. (seasonal averages high 85 low 57)

 

________________

 

 

Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Partly cloudy this evening, mostly cloudy with a slight (20%) chance of inland showers late tonight while mostly cloudy with a slight (20%) chance of coastal showers late tonight,
• Cloudy with a slight (20%) chance of rain and drizzle Saturday AM, just partly cloudy in the afternoon, mostly cloudy with a (30%) chance of coastal rain and drizzle while a slight (20%) chance of inland rain and drizzle Saturday night,
• Mostly cloudy with a (40%) chance of rain and drizzle Sunday AM, a slight (20%) chance of showers in the afternoon and Sunday night,
• Mostly cloudy with a (40%) chance of showers Monday, then a slight (20%) chance of showers at night.
• lows near 56 highs near 65.
• Mostly cloudy with a slight (20%) chance of showers Tuesday AM, partly cloudy in the afternoon and evening, mostly cloudy late Tuesday night,
• Partly cloudy Wednesday through Thursday, then mostly cloudy Thursday night and Friday.
• highs near 65-69 lows near 55. (seasonal averages high 65 low 53)

 

________________

 

Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• AM sun, mostly sunny Saturday afternoon, partly cloudy Saturday night,
• Partly cloudy with a good (50%) chance of showers and thunderstorms Sunday afternoon and evening, mostly cloudy with a good (50%) chance of showers and thunderstorms late Sunday night,
• A mix of clouds and sun Monday with a (30%) chance of AM showers, a slight (20%) chance of showers and a bit cooler in the afternoon, then partly cloudy with a slight (20%) chance of showers Monday night.
• free air freezing level 13,000 ft. today through Saturday night, then snow level above 8,000 ft. late Sunday and Sunday night,
• lows 40-44 cooling to 42 Sunday night highs 68-63.
• A mix of clouds and sun with a slight (20%) chance of showers Tuesday AM, mostly sunny and a bit warmer in the afternoon, mostly clear at night,
• Mostly sunny and a bit cooler Wednesday, then partly cloudy Wednesday night and Thursday AM, mostly sunny and a bit cooler in the afternoon, then partly cloudy Thursday night and 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. late Tuesday night, 13,000 ft. Wednesday, 13,000 ft. rising to 14,000 ft. Wednesday night, 14,000 ft. Thursday, 14,000 ft. falling to 13,000 ft. Thursday night, then 13,000 ft. rising to 14,000 ft. Friday.
• highs 70-68 warming back to 70 Friday lows 42-45.

________________

 

**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 eugenedailynews.com.

________________