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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Weak high pressure slowed things down a bit today. Again upper level low pressure (Shaded “U” shape with blue arrows) takes over. 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. This frontal system is set for Tuesday landfall.

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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 THROUGH 10 PM TONIGHT FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST.
• A WIND ADVISORY IS IN EFFECT 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:

• Mostly cloudy with evening rain, showers likely (70%) late tonight (0.25 in. of rain possible),
• A mix of clouds and sun with a good (50%) chance of AM showers, 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, more in storms), partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Thursday night,
• Cloudy with a good (50%) chance of rain Friday, rain at night,
• Mostly cloudy with showers and a bit cooler Saturday, then rain Saturday night.
• lows 45-43 warming to 47 Friday night cooling to 45 Saturday night highs 62-58.
• Mostly cloudy with showers likely (70%) and a bit cooler Sunday through Monday, cloudy with a good (50%) chance of showers Monday night,
• Mostly cloudy and a bit cooler with rain likely (70%) Tuesday and Tuesday night,
• Then rain Wednesday.
• highs 54-50 warming to 52 Tuesday lows near 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 with evening rain, showers likely (70%) late tonight (0.15 in. of rain possible),
• Mostly cloudy with a (30%) chance of AM showers, partly cloudy and a bit cooler with a slight (30%) chance of showers and a bit cooler Thursday afternoon (under 0.10 in. of rain possible), partly cloudy in the evening, just mostly cloudy late Thursday night,
• Mostly cloudy with a slight (20%) chance of rain and a bit cooler Friday afternoon, rain Friday night,
• Mostly cloudy with rain likely (70%) Saturday AM,  rain and a bit cooler in the afternoon and Saturday night.
• lows 44-46 cooling to 43 Saturday night highs 65-60.
• Mostly cloudy with showers likely (70%) and a bit cooler Sunday, cloudy with evening showers likely (70%), a good (50%) chance of showers late at night,
• AM rain and snow showers likely (60%) and a bit cooler Monday, showers likely (70%) in the afternoon and Monday night,
• Mostly cloudy with rain likely (60%) and a bit warmer Tuesday, then rain Tuesday night and Wednesday (a bit warmer).
• highs 54-50 warming to 55 Wednesday lows 40-43. (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 evening rain, showers likely (70%) late tonight (0.40 in. of rain possible) and windy (Wind: SW 20-30 mph decreasing to SW 10-20 mph at the shore while SW 10-20 mph inland),
• Mostly cloudy Thursday with a good (50%) chance of coastal showers while a (30%) chance of inland showers (under 0.10 in. of rain possible), partly cloudy in the evening, mostly cloudy Thursday night,
• Cloudy with a (40%) chance of coastal rain Friday while a (30%) chance of inland rain, rain Friday night and windy (Wind: S 20-30 mph at the shore while S 15-20 mph inland, gusts to 45 mph late at night),
• Mostly cloudy with rain likely (70%) Saturday AM, rain in the afternoon and evening, then rain with a slight (20%) chance of thunderstorms late Saturday night,
• lows 46-50 highs 63-58.
• Mostly cloudy with showers likely (70%) with a slight (20%) chance of thunderstorms Sunday AM, showers and a bit cooler with a slight (20%) chance of thunderstorms Sunday afternoon, showers likely (70%) Sunday night through Tuesday, then rain and breezy Tuesday night and Wednesday (a bit warmer).
• highs 59-53 lows 47-43. (seasonal averages high 54 low 41).

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Forecast for the Cascades in Lane County:

• Mostly cloudy with evening rain, showers late tonight (0.25 in. of rain possible),
• Mostly cloudy with rain and snow showers likely (70%) Thursday AM, a bit cooler with a slight (20%) chance of afternoon showers (under 0.10 in. of rain possible), just partly cloudy Thursday night,
• Mostly cloudy with a slight (20%) chance of rain and a bit warmer Friday afternoon, rain Friday night,
• Showers and a bit cooler Saturday, then rain at night.
• snow level 6,500 ft. tonight, 5,000 ft. Thursday, 6,500 ft. rising to 7,000 ft. Thursday night, 6,000 ft. Friday, 6,500 ft. Friday night, 6,000 ft. Saturday, then 7,000 ft. Saturday night.
• lows 34-30 warming back to 34 Friday cooling back to 30 Saturday night highs 44-50 cooling to 46 Saturday.
• Mostly cloudy and a bit cooler with rain and snow showers likely (70%) Sunday through Monday, a good (50%) chance of rain and snow showers at night,
• Rain and snow likely (70%) and a bit warmer Tuesday, then mostly cloudy with rain and snow Tuesday night and Wednesday.
• snow level  4,000 ft. Sunday and Sunday night, 3,500 ft. Monday and Monday night, 3,000 ft. Tuesday, 4,500 ft. Tuesday night, then 4,000 ft. Wednesday.
• highs 39-35 warming to 42 Wednesday lows near 27.

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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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