Here is my new weekly weather quiz question. What is  a “ Penumbra?”  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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Again upper level low pressure (Shaded “U” shape with blue arrows) takes hold again. A frontal system brought rain and wind to us Tuesday. Weak high pressure slows things down a bit today.  The parade of storms continues as another frontal system pushes in Friday morning. Saturday sees one more frontal system move into the Pacific Northwest. Yet another frontal system shows up just in time for Sunday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

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

Cottage Grove: The Air Quality Index is 30 in the Good category measuring Particulate Matter.

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

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Advisories:

• A HIGH WIND WARNING IS IN EFFECT FROM 1 PM THIS AFTERNOON THROUGH 10 PM TONIGHT FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST.
• A WIND ADVISORY IS IN EFFECT FROM 1 PM THIS AFTERNOON UNTIL 4 AM THURSDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.

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

• A mix of clouds and sun with a good (50%) chance of rain this afternoon (0.25 in. of rain possible), mostly cloudy with evening rain, showers likely (70%) late tonight (0.25 in. of rain possible),
• Mostly cloudy with a good (50%) chance of showers and a bit warmer Thursday with a slight (20%) chance of afternoon thunderstorms (under 0.10 in of rain possible), a slight (20%) chance of evening showers, patchy fog with a slight (20%) chance of rain late Thursday night,
• Cloudy with a slight (20%) chance of rain and a bit cooler Friday, then rain Friday night.
• highs 57-62 cooling to 56 Friday lows 44-46.
• Mostly cloudy with rain Saturday and Saturday night,
• Rain likely (70%) Sunday, showers likely (70%) and a bit cooler Sunday night and Monday, then mostly cloudy with rain likely (70%) Monday night and Tuesday.
• highs 57-50 lows 45-40. (seasonal averages high 54 low 36).

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Home Wood Heating Advisory:

Eugene-Springfield: GREEN – Burning is Allowed.

Oakridge: GREEN – Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Advisory Courtesy of Lane Regional Air Protection Agency (LRAPA).

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Forecast for Roseburg:

• Mostly cloudy and warmer with a (30%) chance of rain this afternoon, evening rain, rain likely (70%) late tonight (0.15 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of AM showers, showers and a slight (20%) chance of thunderstorms and a bit cooler Thursday afternoon (under 0.10 in. of rain possible), partly cloudy in the evening, just mostly cloudy late Thursday night,
• Cloudy with a slight (20%) chance of rain and a bit cooler Friday afternoon, then rain Friday night.
• highs 68-59 lows 42-46 cooling to 44 Thursday night warming to 48 Friday night.
• Mostly cloudy with rain Saturday and Saturday night,
• Mostly cloudy with showers likely (60%) and a bit cooler Sunday through Monday, cloudy with a good (50%) chance of rain Monday night,
• Then mostly cloudy with rain likely (70%) Tuesday.
• highs 60-54 lows 44-40. (seasonal averages high 56 low 38).

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

• Mostly cloudy with coastal rain likely (60%) this afternoon while good (50%) chance of rain inland this afternoon (under 0.10 in. of rain possible) and windy at the shore (Wind: SE 10-20 mph at the shore increasing to S 20-30 mph), mostly cloudy with evening rain, rain likely (70%) late tonight (0.40 in. of rain possible) and windy (Wind: S 20-30 mph shifting SW 10-20 mph at the shore while SW 10-20 mph inland),
• Then mostly cloudy Thursday and a bit cooler with a (40%) chance of showers and a slight (20%) chance of thunderstorms in the afternoon while a slight (20%) chance of AM inland showers and showers with a slight (20%) chance of inland thunderstorms Thursday afternoon (under 0.10 in. of rain possible), partly cloudy with a slight (20%) chance of coastal showers Thursday night while a slight (20%) chance of evening inland showers,
• Cloudy with a (30%) chance of rain Friday, then rain Friday night.
• highs 63-58 lows 46-50.
• Mostly cloudy with rain Saturday and Saturday night,
• Showers likely (70%) and a bit cooler Sunday and at night,
• Mostly cloudy with showers likely (60%) Monday, then rain likely (70%) Monday night and Tuesday.
• highs 59-53 lows 47-43. (seasonal averages high 54 low 41).

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Forecast for the Cascades in Lane County:

• A mix of clouds and sun today becoming mostly cloudy with evening rain, rain and snow showers late tonight (0.50 in. of rain possible, 2 in. of snow possible),
• Mostly cloudy with rain and snow showers likely (70%) Thursday AM, a bit cooler with a slight (20%) chance of afternoon showers, partly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late Thursday night and Friday, then increasing clouds to mostly cloudy with rain Friday night.
• free air freezing level  6,000 ft. rising to 9,000 ft. this afternoon, snow level 6,500 ft. tonight, 5,000 ft. Thursday, 5,500 ft. Thursday night, free air freezing level 7,500 ft. Friday, then snow level 6,000 ft. Friday night.
• highs 47-44 lows 32-34.
• Rain Saturday and Saturday night,
• Mostly cloudy and a bit cooler with rain and snow likely (70%) Sunday, rain and snow showers likely (70%) Sunday night,
• Mostly cloudy with a good (50%) chance of rain and snow showers and a bit cooler Monday, cloudy with a good (50%) chance of rain and snow at night,
• Then rain and snow likely (70%) Tuesday.
• snow level  6,500 ft. Saturday, 7,000 ft. Saturday night, 5,000 ft. Sunday, 4,000 ft. Sunday night,  3,500 ft. Monday and Monday night, then 3,000 ft. Tuesday.
• highs 44-34 lows 32-26 warming to 28 Tuesday.

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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 and Lane County news on-line at eugenedailynews.com.

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