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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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Low pressure trough centered offshore.
High pressure (Shaded “Arch” shape) sliding eastward away from us will give way to upper level low pressure (Shaded “U” shape) and a frontal system will slide toward bringing back the rain chances by Wednesday night.
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Advisories: A FROST ADVISORY IS IN EFFECT FROM 1 AM UNTIL 8 AM WEDNESDAY 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: Mostly cloudy tonight and Wednesday with a slight (20%) chance of AM rain, cloudy with a slight (20%) chance of evening rain, rain likely (70%) late Wednesday night (under 0.10 in. of rain possible), rain Thursday (0.10 in. of rain possible), cloudy with a (40%) chance of rain at night, a slight (20%) chance of rain Friday, then just mostly cloudy Friday night lows 35-42 highs 50-58. A mix of clouds and sun with a slight (20%) chance of rain Saturday, rain likely (60%) Saturday night, a good (50%) chance of showers Sunday, partly cloudy with a slight (20%) chance of showers Sunday night and Monday, a slight (20%) chance of rain Monday night, then mostly cloudy with a good (50%) chance of rain Tuesday highs 57-50 lows 42-37. (seasonal averages high 53 low 35)
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy tonight and Wednesday, cloudy with a (40%) chance of rain in the evening, rain late Wednesday night (under 0.10 in. of rain possible) and Thursday AM, rain likely (70%) in the afternoon (0.10 in. of rain possible), a slight (20%) chance of rain Thursday night, mostly cloudy with patchy fog Friday AM, partly cloudy and warmer Friday afternoon, then mostly cloudy Friday night lows 35-43 highs 58-62. Mostly cloudy with a slight (20%) chance of rain Saturday, rain likely (70%) and colder at night, mostly cloudy with a (40%) chance of showers Sunday, partly cloudy Sunday night and Monday, partly cloudy with a slight (20%) chance of rain Monday night, then cloudy with a good (50%) chance of rain Tuesday highs 60-54 lows near 39. (seasonal averages high 56 low 38)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with with a slight (20%) chance of coastal rain late tonight (under 0.10 in. of rain possible), cloudy with a slight (20%) chance of rain Wednesday AM (under 0.10 in. of rain possible), cloudy with a good (50%) chance of rain in the evening, rain late Wednesday night (0.10 in. of rain possible), coastal rain Thursday (0.20 in. of rain possible), AM rain inland with rain likely (70%) in the afternoon, mostly cloudy with a (40%) chance of rain late Thursday night (under 0.10 in. of rain possible), patchy AM fog, mostly cloudy and warmer Friday afternoon, then mostly cloudy Friday night lows 36-45 highs 52-57. Mostly cloudy with a slight (20%) chance of rain Saturday, rain at night, mostly cloudy with a (40%) chance of showers Sunday, just partly cloudy Sunday night and Monday, mostly cloudy with a (40%) chance of rain Monday night, then cloudy with a good (50%) chance of rain Tuesday highs 56-50 lows 42-39 warming to 42 Monday night. (seasonal averages high 53 low 41)
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Forecast for the Cascades of Lane County: Mostly cloudy tonight, a mix of clouds and sun Wednesday AM, mostly cloudy in the afternoon, a slight (20%) chance of evening rain and snow, rain and snow late Wednesday night (0.10 in. of rain possible, 1 in. of rain possible), AM rain and snow, afternoon rain likely (70%) Thursday, a (40%) chance of rain at night, mostly cloudy Friday AM, a mix of clouds and sun in the afternoon, then just partly cloudy Friday night free air freezing level 5,500 ft. falling to 5,000 ft. late tonight, free air freezing level 4,000 ft. rising to 5,000 ft. Wednesday, snow level 4,500 ft. Wednesday night, 5,000 ft. rising to 6,000 ft. Thursday, 6,500 ft. Thursday night, then free air freezing level 9,000 ft. Friday and Friday night lows 25-32 highs 40-48. A mix of clouds and sun Saturday, mostly cloudy with rain likely (60%) at night, a mix of clouds and sun with good (50%) chance of rain and snow showers Sunday, partly cloudy with a (30%) chance of rain and snow showers at night, partly cloudy with a slight (20%) chance of rain and snow showers Monday, a slight (20%) chance of rain at night, then mostly cloudy with a good (50%) chance of rain Tuesday free air freezing level 9,000 ft. Saturday, snow level 7,000 ft. Saturday night, 4,500 ft. Sunday, 5,500 ft. Sunday night and Monday, then 7,500 ft. Monday night and Tuesday highs 47-40 lows 44-40.
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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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