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It’s time for my weekly weather quiz question. Here it is. What is lake-effect snow? 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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Advisories: A FROST ADVISORY IS IN EFFECT FROM 3 AM UNTIL 9 AM TUESDAY FOR THE NORTHERN AND CENTRAL COAST RANGE OF OREGON, THE WESTERN COLUMBIA RIVER GORGE, AND THE I-5 CORRIDOR FROM PORTLAND SOUTH THROUGH EUGENE. A FROST ADVISORY IS IN EFFECT FROM 2AM UNTIL 9 AM TUESDAY FOR CENTRAL DOUGLAS COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY. A FREEZE WATCH IS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JOSEPHINE COUNTY, AND JACKSON COUNTY. A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 9 AM TUESDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY. A FROST ADVISORY IS IN EFFECT FROM 1 AM UNTIL 9 AM WEDNESDAY FOR THE NORTHERN AND CENTRAL COAST RANGE OF OREGON, THE WESTERN COLUMBIA RIVER GORGE, AND THE I-5 CORRIDOR FROM PORTLAND SOUTH THROUGH EUGENE.
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The jet stream shows a trough of low pressure (“U” shape on yellow line) moving through Oregon and it will be followed by a short lived area of high pressure (“Arch” shape on yellow line). A large upper level low will take over late in the week we’ll see one of many frontal systems will bring the chance of rain to the Pacific Northwest.
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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: Partly cloudy with patchy fog and possible frost and freezing fog late tonight and early Tuesday AM, mostly sunny Tuesday afternoon, mostly clear Tuesday night, patchy fog and frost with possible freezing fog again late at night and early Wednesday AM, mostly sunny in the afternoon, partly cloudy and not as cold Wednesday night, then mostly cloudy Thursday and Thursday night lows 33-29 warming to near 42 Thursday night highs 58-55 warming to near 60 Thursday. Mostly cloudy with a slight (20%) chance of rain Friday, a (40%) chance of rain Friday night, a (40%) chance of showers Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night, a mix of clouds and sun Sunday, partly cloudy with a slight (20%) chance of showers Sunday night, then a mix of clouds and sun with a slight (20%) chance of showers Monday highs 62-59 lows near 46. (seasonal averages high 60 low 40)
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Forecast for the Umpqua Basin including Roseburg: Mostly clear with patchy frost late tonight and early Tuesday AM, sunny Tuesday afternoon, clear with patchy frost late Tuesday night and Wednesday AM, sunny in the afternoon, partly cloudy in the evening, mostly cloudy Wednesday night, then mostly cloudy Thursday and Thursday night lows 36-33 warming to near 40 Thursday night highs 57-63. Mostly cloudy Friday, a (40%) chance of rain Friday night, mostly cloudy with a slight (20%) chance of showers and cooler Saturday and Saturday night, partly cloudy with a slight (20%) chance of showers Sunday, then mostly cloudy with a slight (20%) chance of showers Monday highs 64-60 lows 48-44. (seasonal averages high 63 low 43)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy this evening, mostly clear tonight, areas of frost inland late at night and early Tuesday AM, sunny Tuesday, mostly clear Tuesday night with areas of inland frost late and Wednesday AM, sunny Wednesday afternoon, partly cloudy Wednesday evening, mostly cloudy at night, then mostly cloudy Thursday and Thursday night lows 42-38 warming to near 50 Thursday night highs 59-63. Mostly cloudy with a (30%) chance of rain Friday, a (40%) chance of rain Friday night, mostly cloudy with a (30%) chance of showers Saturday, then mostly cloudy with a slight (20%) chance of showers Saturday night through Monday highs 62-58 lows near 50. (seasonal averages high 60 low 45).
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Forecast for the Cascades of Lane County: Partly cloudy tonight, mostly sunny Tuesday, clear Tuesday night, mostly sunny Wednesday, partly cloudy Wednesday night, a mix of clouds and sun Thursday, then mostly cloudy Thursday night free air freezing level 6,000 ft. tonight and Tuesday, rising to 8,000 ft. Tuesday night, then rising to 10,000 ft. Wednesday through Thursday night lows 25-36 highs 44-52. Mostly cloudy Friday, mostly cloudy with a (40%) chance of rain Friday night, a mix of clouds and sun with a (40%) chance of showers Saturday, a slight (20%) chance of showers Saturday night, a mix of clouds and sun with a slight (20%) chance of showers Sunday, partly cloudy with a slight (20%) chance of showers Sunday night, then a mix of clouds and sun with a slight (20%) chance of showers Monday snow level above 8,000 ft. Friday, 7,000 ft. Friday night, 6,500 ft. Saturday, then above 8,000 ft. Saturday night and through Monday highs 55-48 lows near 36.
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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 news on-line at Eugene Daily News.com.
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