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Congratulations to Buddy McKinley this week’s weather quiz winner. Here’s the question he correctly answered. Nor’easters have been causing a lot of trouble this Winter season. Just define the term “nor’easter” to win a week of free forecasts. You can go back to his posted comment answer, but I’ll place it here for you now. “A nor’easter,also northeaster; is a type of macro-scale storm along the East Coast of the United States and Atlantic Canada, so named because the storm travels to the northeast from the south and the winds come from the northeast, especially in the coastal areas of the Northeastern United States and Atlantic Canada. More specifically, it describes a low pressure area whose center of rotation is just off the East Coast and whose leading winds in the left forward quadrant rotate onto land from the northeast. The precipitation pattern is similar to other extratropical storms. Nor’easters also can cause coastal flooding, coastal erosion, hurricane force winds, and heavy snow. Nor’easters can occur at any time of the year but are mostly known for their presence in the winter season. Nor’easters can be devastating and damaging, especially in the winter months, when most damage and deaths are cold related, as nor’easters are known for bringing extremely cold air down from the Arctic air mass. Nor’easters thrive on the converging air masses; that is, the polar cold air mass and the warmer ocean water of the Gulf Stream.” I’ll have another weekly weather quiz question for you starting next Monday. Please post your answer as a comment by clicking on “no 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.

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The jet stream shows a high pressure ridge ( “arch” shaped area) aiming the airflow toward the Pacific Northwest.  Another cold front pushed down from the North bringing some cold Arctic air with it. Remember that, particularly this time of the year, when it’s not raining it is usually fogging and we’ve had some pretty dense fog lately.

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Advisories: A FREEZE WARNING IS IN EFFECT FROM MIDNIGHT TONIGHT THROUGH 8 AM WEDNESDAY  FOR THE SOUTH CENTRAL OREGON COAST. AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM SATURDAY FOR CENTRAL DOUGLAS COUNTY INCLUDING ROSEBURG, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.

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Here are your detailed forecasts. **

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with patchy fog and freezing fog early AM, a mix of clouds and sun this afternoon, mostly clear with patchy fog and freezing late tonight and Wednesday AM, a mix of clouds and sun Wednesday afternoon, partly cloudy with patchy fog and freezing fog late at night and Thursday AM, a mix of clouds and sun Thursday afternoon, then partly cloudy Thursday night highs 48-45 warming to 55 Thursday lows 22-33.  Mostly cloudy with a slight (20%) chance of rain Friday, just mostly cloudy Friday night and Saturday, partly cloudy with a slight (20%) chance of showers Friday night, partly cloudy Saturday night, then mostly cloudy with a slight (20%) chance of showers Sunday through Monday highs 55-49 lows 40-34. (seasonal  averages high 48 low 34)

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Forecast for the Umpqua Basin including, Roseburg: Partly cloudy with patchy fog this AM, becoming mostly sunny this afternoon, mostly clear tonight with patchy fog and freezing fog late, partly cloudy with patchy AM fog and freezing fog, then sunny Wednesday afternoon, partly cloudy with patchy fog and freezing fog Wednesday night and Thursday AM, partly cloudy Thursday afternoon, partly cloudy with patchy fog late Thursday night highs 47-57 lows 28-36. Patchy AM fog then partly cloudy Friday, mostly cloudy with patchy fog late Friday night, then mostly cloudy Saturday, partly cloudy with a slight (20%) chance of showers Saturday night, mostly cloudy with a slight (20%) chance of showers Sunday and Sunday night, then just mostly cloudy Monday highs 58-52 lows 39-34. (seasonal averages high 52 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy with patchy fog this AM, then mostly sunny this afternoon, mostly clear tonight, sunny Wednesday, partly cloudy with patchy fog again late Wednesday night through Thursday night highs 50-55 lows 32-40. Patchy AM fog Friday, mostly cloudy with patchy fog late at night, mostly cloudy with a slight (20%) chance of showers Saturday, partly cloudy with a slight (20%) chance of showers and colder Saturday night, partly cloudy with a slight (20%) chance of showers Sunday and Sunday night, and just partly cloudy Monday highs 57-52 lows 40-37. (seasonal averages high 54 low 40).

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Forecast for the Cascades of Lane County: Mostly sunny and breezy (wind: E 15-25 mph) today, mostly clear tonight, mostly sunny Wednesday,  mostly clear at night, partly cloudy Thursday and Thursday night (mostly cloudy with a slight (20%)  chance of rain at night North of Mt. Jefferson) free air freezing level 3,500 ft. rising to 4,500 ft. today, 4,500 ft. late tonight,  4,500 ft. rising to 8,000 ft. Wednesday afternoon and night, and rising to 9,000 ft. Thursday and a snow level above 8,000 ft. Thursday night highs 33-47 lows 16-30. Mostly cloudy with a slight (20%) chance of rain  Friday and a (%) chance Friday night, and Saturday, then mostly cloudy with a slight (20%) chance of showers Saturday night through Monday snow level 8,000 ft. Friday and Friday night, 6,500 ft. Saturday, 4,500 ft. Saturday night through Sunday night, falling to 3,000 ft. Monday highs 48-38 lows 28-24.

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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.