Here is my weekly weather quiz question for the last time. What is  a “ Penumbra?” Here is the correct answer. A Penumbra in solar-terrestrial terms, the sunspot area that may surround the darker umbra or umbrae. It consists of linear bright and dark elements radial from the sunspot umbra. 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.

________________

The parade of storms resumes as a frontal system pushes its way through. An upper level low pressure trough (Shaded “U” shape with blue arrows) will keep the showers around for your Sunday. More storms will follow as frontal system pushes through Thursday. We wil be visited by another frontal system moves in to our South.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 26 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

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

________________

Advisories:

• A HIGH SURF ADVISORY IS IN EFFECT FROM 3 PM TODAY UNTIL 6 AM MONDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM MONDAY ABOVE 3,500 FT. FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.

________________

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

• AM showers, showers with some sun peeks and a slight (20%) chance of thunderstorms and a bit cooler this afternoon (0.25 in. of rain possible, more in storms), showers tonight (0.25 in. of rain possible),
• Mostly cloudy with showers likely (70%) in the AM, a good (50%) chance of showers and a bit cooler with a slight (20%) chance of thunderstorms Monday afternoon, mostly cloudy with a good (50%) chance of evening showers, a slight (20%) chance of showers late at night,
• A mix of clouds and sun with a slight (20%) chance of rain Tuesday AM, then increasing clouds with rain and a bit warmer in the afternoon and Tuesday night.
• highs 54-50 lows 40-36 warming to 44 Tuesday night.
• Mostly cloudy with rain and a bit warmer Wednesday through Thursday, rain likely (60%) Thursday night through Friday night,
• Then showers likely (60%) Saturday.
• highs 53-56 cooling to 54 Saturday lows near 42. (seasonal averages high 55 low 36).

_____

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).

___________________

Forecast for Roseburg:

• Showers likely (70%) and a bit cooler today (snow level 3,500 ft.), cloudy with evening showers, a good (50%) chance of showers late tonight (0.10 in. of rain possible, snow level 3,500 ft.late at night),
• Mostly cloudy with AM showers likely (70%), a good (50%) chance of showers and a bit cooler Monday afternoon (snow level 3,000 ft.), mostly cloudy with a (30%) chance of evening showers, partly cloudy with a (30%) chance of showers late Monday night (snow level 3,000 ft.),
• Mostly cloudy with a slight (20%) chance of AM rain, then rain Tuesday afternoon and at night.
• highs 56-52 lows 40-35 warming back to 44 Tuesday night.
• Mostly cloudy with rain and a bit warmer Wednesday through Thursday, rain likely (70%) Thursday night,
• Rain and a bit cooler Friday and Friday night,
• Then mostly cloudy with rain likely (70%) Saturday.
• highs 58-56 lows 44-42. (seasonal averages high 57 low 39).

________________

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

• Mostly cloudy with coastal showers and a slight (20%) chance of thunderstorms and a bit cooler today while showers and a slight (20%) chance of inland AM thunderstorms and showers in the afternoon (0.40 in. of rain possible), coastal showers with a slight (20%) chance of thunderstorms at night while evening inland showers and showers likely (70%) with a slight (20%) chance of thunderstorms late tonight (0.25 in. of rain possible),
• Mostly cloudy with AM showers likely (70%) and a slight (20%) chance of thunderstorms, coastal showers and a bit cooler Monday afternoon while a (40%) chance of inland afternoon showers, partly cloudy with a  (40%) chance of evening coastal showers while a (30%) chance of inland showers Monday night,
• Mostly cloudy with a good (50%) chance of AM rain Tuesday, rain in the afternoon, then rain Tuesday night.
• highs near 53 lows 43-47.
• Mostly cloudy with rain Wednesday through Friday night,
• Then rain likely (70%) Saturday.
• highs 58-55 lows 48-46. (seasonal averages high 54 low 41).

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy and cooler with rain and snow showers today (0.25 in. of rain possible, 1-3 in. of snow possible) and tonight (0.25 in. of rain possible, 2 in. of snow possible) ,
• Mostly cloudy and a bit colder with snow showers likely (70%) Monday, a good (50%) chance of evening rain and snow showers, a slight (20%) chance of rain and snow showers late Monday night,
• Mostly cloudy with rain and snow likely (70%) Tuesday afternoon, then rain and snow Tuesday night.
• snow level 3,500 ft. today and tonight, 3,000 ft. Monday through Tuesday, then 5,000 ft. Tuesday night.
• highs 38-33 warming to 36 Tuesday lows 27-22 warming to 29 Tuesday night.
• Mostly cloudy with rain and a bit warmer Wednesday, rain and breezy at night,
• Mostly cloudy with rain and snow Thursday, rain likely (70%) Thursday night,
• Rain and snow likely (70%) Friday and Friday night,
• Then rain and snow showers likely (60%) and a bit cooler Saturday.
• snow level 6,000 ft. Wednesday, 7,000 ft. Wednesday night, 5,000 ft. Thursday, 5,500 ft. Thursday night, then 4,000 ft. Friday through Saturday.
• highs 44-40 lows 40-27.

________________

**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.

________________