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Here is my new weekly weather quiz question. What is an “Omega High?” 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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High pressure ridge centerer offshore.A frontal system pushed through Oregon bringing the chance of rain that will taper off late today. High pressure (Shaded “Arch” shape) sliding eastward to the coast will dry us out for a short time late today and Tuesday. Upper level low pressure (Shaded “U” shape) and another frontal system will slide toward us Thursday increasing the rain chances. See the pattern here of frontal systems (this one shown on Saturday) that will march through the Pacific Northwest.
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Advisories: A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 7 PM TODAY FOR THE NORTH OREGON CASCADES, NOT INCLUDING THE CASCADES IN LANE COUNTY. A FREEZE WARNING IS IN EFFECT FROM 1 AM THROUGH 8 AM TUESDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE SOUTH OREGON COAST. A FROST ADVISORY IS IN EFFECT FROM 1 AM THROUGH 8 AM TUESDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE SOUTH OREGON COAST.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Partly cloudy with a slight (20%) chance of showers this evening, mostly cloudy with patchy fog late tonight and Tuesday AM, a mix of clouds and sun in the afternoon, mostly cloudy with a (30%) chance of rain Tuesday night, mostly cloudy with a slight (20%) chance of showers Wednesday AM, mostly cloudy in the afternoon, cloudy with a slight (20%) chance of showers Wednesday night, a good (50%) chance of rain Thursday, then mostly cloudy with a (40%) chance of rain Thursday night lows 33-40 highs 50-53. Mostly cloudy with a slight (20%) chance of rain Friday, partly cloudy at night, a mix of clouds and sun with a slight (20%) chance of rain Saturday, mostly cloudy with a good (50%) chance of rain Saturday night, a good (50%) chance of showers Sunday, then partly cloudy with a slight (20%) chance of showers Sunday night and Monday highs 58-54 lows 42-36. (seasonal averages high 53 low 35)
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with isolated showers this evening, patchy fog late tonight, mostly cloudy Tuesday AM with patchy fog and freezing fog, partly cloudy in the afternoon, mostly cloudy with a slight (20%) chance of rain and snow late Tuesday night (snow level 2,000 ft. late), mostly cloudy with a slight (20%) chance of rain Wednesday (AM snow level 2,500 ft.), a slight (20%) chance of rain Wednesday night (snow level 3,500 ft. late), then mostly cloudy with a (40%) chance of rain Thursday and Thursday night with areas of fog late at night lows 32-42 highs 52-57. Areas of AM fog, mostly cloudy and warmer with a slight (20%) chance of showers Friday afternoon, mostly cloudy at night, a slight (20%) chance of rain Saturday, rain likely (60%) at night, mostly cloudy with a (40%) chance of showers Sunday, partly cloudy with a slight (20%) chance of rain Sunday night, then just partly cloudy Monday highs 65-57 lows 44-38. (seasonal averages high 55 low 38)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy tonight with inland patchy fog late, mostly cloudy patchy fog and freezing fog inland Tuesday AM, partly cloudy in the afternoon, mostly cloudy with with a (40%) chance of rain Tuesday night (under 0.10 in. of rain possible, snow level 2,000 ft. late), mostly cloudy with a slight (20%) chance of rain Wednesday (under 0.10 in. of rain possible), mostly cloudy with a (30%) chance of rain Wednesday night, a (40%) chance of AM rain, rain likely (60%) Thursday afternoon, then mostly cloudy with a (40%) chance of rain and patchy fog late Thursday night lows 34-45 highs 48-53. AM fog, mostly cloudy and warmer with a slight (20%) chance of showers Friday, just mostly cloudy Friday night, a slight (20%) chance of rain Saturday, rain likely (70%) Saturday night, mostly cloudy with a (40%) chance of showers Sunday, then partly cloudy Sunday night and Monday highs 59-52 warning to 56 Monday lows 45-40. (seasonal averages high 53 low 41)
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Forecast for the Cascades of Lane County: Mostly cloudy with a good (50%) chance of snow showers this evening, partly cloudy with a slight (20%) chance of snow showers late tonight, partly cloudy and a bit warmer Tuesday, mostly cloudy with a (40%) chance of rain and snow Tuesday night and Wednesday AM, a mix of clouds and sun with a slight (20%) chance of afternoon rain and snow showers, mostly cloudy with a slight (20%) chance of rain and snow showers Wednesday night, a good (50%) chance of rain and snow Thursday, then mostly cloudy with a (30%) chance of rain Thursday night snow level at the surface tonight, free air freezing level at the surface rising to 4,000 ft. Tuesday afternoon, snow level 3,000 ft. Tuesday night, 3,500 ft. Wednesday, 4,500 ft. Wednesday night, 5,000 ft. Thursday, then 6,500 ft. Thursday night lows 20-30 highs near 40. Mostly cloudy with a slight (20%) chance of rain Friday, just partly cloudy Friday night, a mix of clouds and sun Saturday, mostly cloudy with rain likely (60%) at night, a good (50%) chance of rain and snow showers Sunday, partly cloudy with a (40%) chance of rain and snow showers at night, then partly cloudy with a slight (20%) chance of rain and snow showers Monday snow level 8,000 ft. Friday, free air freezing level 9,000 ft. Friday night and Saturday, snow level 7,000 ft. Saturday night, 4,500 ft. Sunday, then 5,500 ft. Sunday night and Monday highs 48-43 lows 30-27.
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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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