Here is my weekly weather quiz question for the last time. What is an “Observation Well?” Here is the correct answer. An Observation Well, in hydrologic terms, is a non-pumping well used for observing the elevation of the water table or piezometric surface. 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 upper level airflow (Shaded area with blue arrows) will be sending more moisture into the Pacific Northwest for a while. A warm front followed by a cold front spread more moisture our way Saturday. Take a look to the west and you’ll see the next frontal system coming in today. The parade of storms continues Tuesday as a frontal system approaches. More frontal systems gather offshore Wednesday.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 22 in the Good category measuring Particulate Matter.

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

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

________________

Advisories:

• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 9 AM TODAY FOR THE NORTHERN OREGON CASCADES (NOT INCLUDING THE CASCADES IN LANE COUNTY.)

________________

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

• Mostly cloudy with rain and warmer today (under 0.25 in. of rain possible), a good (50%) chance of rain tonight (under 0.10 in. of rain possible), patchy fog late.
• Mostly cloudy with patchy AM fog, a bit warmer with a slight (20%) chance of rain Monday (Washington’s Birthday, Presidents’ Day), partly cloudy with a slight (20%) chance of rain and colder Monday night, patchy fog late,
• Patchy AM fog, a mix of clouds and sun with a slight (20%) chance of rain Tuesday, then mostly cloudy with a slight (20%) chance of rain and a bit cooler Tuesday night.
• highs 58-62 lows 50-42 warming to 45 Tuesday night.
• Mostly cloudy and a bit cooler with rain likely (70%) Wednesday, rain at night,
• Cloudy with a good (50%) chance of showers and a bit cooler Thursday, a good (50%) chance of rain Thursday night,
• Then mostly cloudy and a bit warmer with a good (50%) chance of rain Friday through Saturday.
• high 57-52 warming to 55 Friday and Saturday lows 43-40. (seasonal averages high 51 low 35).

_____

Home Wood Heating Advisory:

Eugene-Springfield: YELLOW – Caution is Advised.

Oakridge: YELLOW – Caution is Advised.

*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:

• Mostly cloudy with rain this AM, rain likely (60%) and a bit warmer this afternoon (0.20 in. of rain possible), a (30%) chance of rain with patchy fog late tonight,
• Mostly cloudy with areas of AM fog, partly cloudy and a bit warmer Monday afternoon (Washington’s Birthday, Presidents’ Day) through Tuesday, mostly cloudy Tuesday night,
• highs 58-64 lows 46-43 warming back to 46 Tuesday night.
• Cloudy and a bit cooler with rain likely (60%) Wednesday and Wednesday night,
• Mostly cloudy with showers likely (60%) and a bit cooler Thursday, cloudy with a (40%) chance of rain at night,
• Rain likely (60%) and a bit warmer Friday, mostly cloudy with a (40%) chance of rain Friday night,
• Then cloudy with a (40%) chance of rain Saturday.
• highs 59-55 warming back to 59 Saturday lows near 43. (seasonal averages high 53 low 37).

________________

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

• Mostly cloudy rain this AM, rain likely (70%) and a bit warmer this afternoon (0.20 in. of rain possible), a slight (20%) chance of rain with patchy fog late tonight,
• Mostly cloudy with AM fog and a slight (20%) chance of coastal rain, , partly cloudy and a bit warmer Monday afternoon (Washington’s Birthday, Presidents’ Day), just partly cloudy Monday night and Tuesday, then mostly cloudy Tuesday night.
• highs 58-63 lows 50-47 warming back to 50 Tuesday night.
• Mostly cloudy with rain likely (60%) and a bit cooler Wednesday, rain Wednesday night,
• Mostly cloudy and a bit cooler with showers likely (70%) Thursday, cloudy with a good (50%) chance of rain at night,
• Rain likely (70%) and a bit warmer Friday, mostly cloudy with a (40%) chance of rain Friday night,
• Then cloudy with a (40%) chance of rain and a bit warmer Saturday.
• highs 59-55 warming back to 59 Saturday lows near 46. (seasonal averages high 53 low 40).

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy and a bit warmer with rain today (0.75 in. of rain possible), evening rain likely (70%), a good (50%) chance of rain tonight (0.10 in. of rain possible),
• A mix of clouds and sun and a bit warmer Monday (Washington’s Birthday, Presidents’ Day) with a slight (20%) chance of rain, just partly cloudy at night and and Tuesday, then mostly cloudy with a slight (20%) chance of rain Tuesday night.
• snow level 7,500 ft. today, 8,000 ft. tonight, 7,500 ft. Monday, free air freezing level 9,000 ft. Monday night and Tuesday, then snow level 7,000 ft. Tuesday night.
• highs 46-52 lows 37-39.
• Cloudy with a good (50%) chance of rain and cooler Wednesday, rain and snow Wednesday night,
• Mostly cloudy and a bit cooler with a good (50%) chance of rain and snow showers Thursday, a good (50%) chance of rain and snow at night,
• Then mostly cloudy and a bit warmer with a (40%) chance of rain and snow Friday through Saturday.
•  snow level 7,000 ft. Wednesday, 5,500 ft. Wednesday night, 3,500 ft. Thursday and Thursday night, 5,000 ft. Friday, 4,500 Friday night, then 4,000 ft. Saturday.
• highs 45-36 warming to 42 Thursday and Friday lows near 29.

________________

**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.

________________