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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.An upper level high (Shaded “Arch” shape) has moved east of us . A frontal system pushes toward Oregon bringing the chance of rain tapering off today. High pressure sliding eastward will dry us out for a short time late today and Tuesday. Low pressure and another frontal system will slide toward us Wednesday increasing the rain chances. See the pattern here of frontal systems (this one shown on Friday) that will march through the Pacific Northwest.
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Advisories: A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 1 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 EFECT 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: Mostly cloudy with showers today (0.10 in. of rain possible, small hail also ), a (30%) chance of evening showers, mostly cloudy late tonight (under 0.10 in. of rain possible) with patchy fog late at night and Tuesday AM, a mix of clouds and sun Tuesday, cloudy with a good (50%) chance of rain Tuesday night, mostly cloudy with a slight (20%) chance of rain Wednesday, cloudy with a slight (20%) chance of showers Wednesday night highs 48-52 lows 33-38. Mostly cloudy with a good (50%) chance of rain Thursday, a (40%) chance of rain Thursday night, a mix of clouds and sun with a slight (20%) chance of showers Friday, partly cloudy at night, partly cloudy with a slight (20%) chance of rain Saturday, mostly cloudy with a good (50%) chance of rain Saturday night, then a (40%) chance of showers Sunday highs 52-57 cooling to 53 Sunday lows 37-42. (seasonal averages high 53 low 35)
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with AM rain and snow showers, rain and snow showers likely (70%) this afternoon (0.10 in. of rain possible, snow level 2,500 ft.), a slight (20%) chance of rain and snow showers this evening, patchy fog late tonight, mostly cloudy Tuesday AM, partly cloudy in the afternoon, mostly cloudy with a slight (20%) chance of rain Tuesday night (snow level 3,000 ft.), mostly cloudy with a slight (20%) chance of AM rain, a slight (20%) chance of showers Wednesday afternoon, then mostly cloudy with a slight (20%) chance of showers Wednesday night highs 49-54 lows 33-36. Mostly cloudy with a (40%) chance of rain Thursday, a (40%) chance of showers Thursday night with areas of fog late at night and Friday AM, a slight (20%) chance of rain and warmer in the afternoon, just partly cloudy Friday night, mostly cloudy with a slight (20%) chance of showers Saturday, rain likely (60%) at night, then mostly cloudy with a (40%) chance of showers Sunday highs 54-63 cooling to 57 Sunday lows 39-45. (seasonal averages high 55 low 38)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with showers likely (70%) today (under 0.10 in. of rain possible), mostly cloudy this evening, partly cloudy late tonight, mostly cloudy Tuesday AM, partly cloudy in the afternoon, cloudy with a (40%) chance of rain Tuesday night (under 0.10 in. of rain possible), a (30%) chance of rain Wednesday AM, a slight (20%) chance of afternoon showers (under 0.10 in. of rain possible), then cloudy with a (40%) chance of showers Wednesday night highs 46-52 lows 34-40. Cloudy with a good (50%) chance of rain Thursday, a (40%) chance of showers Thursday night with areas of fog late at night and Friday AM, mostly cloudy and warmer with a slight (20%) chance of rain and in the afternoon, just mostly cloudy Friday night, a slight (20%) chance of rain Saturday, rain likely (70%) Saturday night, then mostly cloudy with a (40%) chance of showers Sunday highs 52-58 cooling to 52 Sunday lows 43-46. (seasonal averages high 53 low 41)
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Forecast for the Cascades of Lane County: Mostly cloudy with AM rain and snow showers, snow showers this afternoon (0.25 in. of rain possible, 1-4 in. of snow possible), a (40%) chance of evening snow showers, 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, then mostly cloudy with a slight (20%) chance of rain and snow showers Wednesday night snow level at the surface today and 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, then 4,500 ft. Wednesday night highs 29-40 lows 20-27. Mostly cloudy with a (40%) chance of rain and snow Thursday, a (40%) chance of rain Thursday night, a mix of clouds and sun with a slight (20%) chance of showers Friday, just partly cloudy Friday night and Saturday, rain likely (60%) at night, then mostly cloudy with a good (50%) chance of showers Sunday snow level 5,000 ft. Thursday, 6,500 ft. Thursday night, 8,000 ft. Friday, free air freezing level 9,000 ft. Friday night and Saturday, snow level 7,500 ft. Saturday night, then 5,500 ft. Sunday highs 40-48 cooling to near 43 Sunday 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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