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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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An upper level trough of low pressure (Shaded “U” shape) and a frontal system will slide through bringing the rain chances from slight to likely by late tonight. With subtropical moisture moving in w have warmed up a bit too. A ridge of high pressure (Shaded “Arch” shape) will bring a bit of clearing again for your Friday and Saturday. Another frontal system will move in Saturday returning an increased chance of rain.
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Advisories: A FROST ADVISORY IS IN EFFECT UNTIL 8 AM TODAY 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 today with a slight (20%) chance of AM showers, cloudy with a slight (20%) chance of evening rain, rain likely (70%) late tonight (under 0.10 in. of rain possible), rain Thursday (0.25 in. of rain possible), mostly cloudy with evening rain likely (60%), a slight (20%) chance of rain late at night, a mix of clouds and sun Friday, then just mostly cloudy Friday night highs 52-59 lows 39-43 . 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 36)
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy today, cloudy with a (40%) chance of rain in the evening, rain late tonight (under 0.10 in. of rain possible) and Thursday (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 highs 58-67 lows near 43. 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 63-54 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: Cloudy with a slight (20%) chance of rain this AM (under 0.10 in. of rain possible), cloudy with a good (50%) chance of rain this evening, rain late tonight (0.10 in. of rain possible), rain Thursday (0.20 in. of rain possible), mostly cloudy with a slight (20%) chance of rain Thursday night (under 0.10 in. of rain possible), patchy AM fog, mostly cloudy and warmer Friday afternoon, then mostly cloudy Friday night highs 52-57 lows near45. 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 rain likely 60%) 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: A mix of clouds and sun this AM, mostly cloudy this afternoon, a slight (20%) chance of evening rain and snow, rain and snow late tonight (0.10 in. of rain possible, 1-3 in. of snow possible), rain Thursday (0.50 in. of rain possible), cloudy with evening rain likely (60%,) a slight (20%) chance of rain late at night, a mix of clouds and sun Friday, then just partly cloudy Friday night 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 highs 40-50 lows 30-35 cooling to near 30 Friday night. 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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Get your local Eugene-Springfield news on-line at Eugene Daily News.com.
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