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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 WATCH IS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY AM FOR THE SOUTH CENTRAL OREGON COAST. AN AIR STAGNATION ADVISORY IS IN EFFECT FROM 10 AM TUESDAY 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 and colder tonight with patchy fog and freezing fog late at night and early AM, a mix of clouds and sun Tuesday afternoon, mostly clear with patchy fog and freezing late Tuesday night 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 lows 28-22 Tuesday night warming to 32 Thursday night highs 48-42 warming to 55 Thursday.  A mix of clouds and sun Friday 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 38-34. (seasonal  averages high 48 low 34)

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Forecast for the Umpqua Basin including, Roseburg: Partly cloudy with patchy fog late tonight and Tuesday AM, becoming mostly sunny Tuesday afternoon, mostly clear Tuesday night 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 lows 36-28 Wednesday night warming to 36 Thursday night highs 47-57. 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: Mostly cloudy tonight with patchy coastal fog, patchy fog Tuesday AM, then mostly sunny Tuesday afternoon, mostly clear Tuesday night, sunny Wednesday, partly cloudy with patchy fog again late Wednesday night through Thursday night lows 39-33 warming to near 40 Thursday night highs 50-55. 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 Saturday night through 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 cloudy this evening, becoming partly cloudy tonight, mostly sunny and breezy (wind: E 15-25 mph) Tuesday, mostly clear Tuesday night, mostly sunny Wednesday and Thursday, mostly clear at night free air freezing level 3,000 ft. falling to the surface late tonight, 4,000 ft. Tuesday, 5,500 ft. Tuesday night, 7,500 ft. Wednesday afternoon, rising to 8,000 ft. Wednesday night, and rising to 9,000 ft. Thursday and Thursday night lows 19-16 warming to 25 Wednesday night and near 30 Thursday night highs 28-47. Partly cloudy with a slight (20%) chance of showers Friday and Friday night, then mostly cloudy with a slight (20%) chance of rain and snow showers Saturday through Monday snow level 8,000 ft. Friday, 6,500 ft. Friday night, 4,500 ft. Saturday through 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.