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Here is my weekly weather quiz question. What does the following description actually describe? “Very energetic electromagnetic radiation with wavelengths intermediate between 0.01 and 10 nanometers (0.1-100 Angstroms) or between gamma rays and ultraviolet radiation. Essentially all of them from space are absorbed in the Earth’s upper atmosphere.” 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 high pressure ridge (the shaded “Arch” shape) has weakened. Low pressure (shaded “U” shape) in the Gulf of Alaska takes over sending another frontal system our way. Surface high pressure (Blue “H” offshore) will give us a bright and dry weekend.
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Advisories: A WINTER WEATHER ADVISORY IS IN EFFECT FROM 1 AM UNTIL 10 AM THURSDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON CASCADES AND THE SISKIOUS MOUNTAINS, AND FROM 1 AM UNTIL 4 PM THURSDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with rain chance increasing to near 100% by late this evening (0.25 in. of rain possible), showers Thursday (0.10 in. of rain possible), cloudy with a good (50%) chance of showers in the evening, a slight (20%) chance of showers late Thursday night (under 0.10 in. of rain possible), cloudy with patchy AM fog, a mix of clouds and sun Friday afternoon, then just mostly cloudy Friday night, mostly cloudy with patchy fog and a slight (20%) chance of showers Saturday AM, mostly cloudy in the afternoon, mostly cloudy with patchy fog Saturday night lows 38-32 highs 47-44. A mix of clouds and sun Sunday, partly cloudy with patchy fog Sunday night, partly cloudy Monday and Monday night, a mix of clouds and sun Tuesday, then mostly cloudy with a slight (20%) chance of rain Tuesday night and Wednesday highs 44-49 lows 32-35. (seasonal averages high 50 low 35)
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a (40%) chance of rain this evening, rain late tonight (0.15 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft.), rain and snow showers Thursday (0.10 in. of rain possible, 1-2 in. of snow possible, snow level 2,500 ft. falling to 2,000 ft.), cloudy with evening rain and snow showers, a slight (20%) chance of rain and snow showers late Thursday night (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 2,500 ft. falling to 1,500 ft.), partly cloudy Friday and Friday evening, mostly cloudy Friday night, mostly cloudy with patchy fog and a slight (20%) chance of showers Saturday AM, partly cloudy in the evening, then mostly cloudy with patchy fog late Saturday night lows 39-32 warming to 35 Saturday night highs 44-50. Partly cloudy with areas of AM and late night fog with lingering fog in the afternoons Sunday through Monday night, areas of AM fog, mostly cloudy Tuesday, a slight (20%) chance of rain with patchy fog Tuesday night, then mostly cloudy with a slight (20%) chance of rain Wednesday highs 50-54 lows 32-36. (seasonal averages high 52 low 37)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain tonight (0.60 in. of rain possible) and breezy (wind: SW 15-25 mph gusts to 40 mph this evening), showers and a slight (20%) chance of coastal thunderstorms Thursday and showers likely (60%) inland (0.35 in. of rain possible, snow level 2,000 ft.), showers and a slight (20%) chance of coastal thunderstorms in the evening and a slight (20%) chance of showers late Thursday night while evening showers inland and a slight (20%) chance of rain and snow showers late (0.15 in. of rain possible, small hail possible, snow level 2,000 ft. late), partly cloudy Friday and Friday evening, mostly cloudy at night, patchy AM fog, mostly cloudy with a slight (20%) chance of showers Saturday, then partly cloudy Saturday night lows 42-35 warming to 43 Saturday night highs 46-50. Partly cloudy Sunday through Tuesday, then mostly cloudy with a slight (20%) chance of rain Tuesday night and Wednesday highs 52-54 lows 37-40. (seasonal averages high 52 low 40)
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Forecast for the Cascades of Lane County: Partly cloudy with a (40%) chance of evening rain and snow, rain and snow late tonight (0.25 in. of rain possible, 1-3 in. of snow possible), snow showers Thursday (2 in. of snow possible), evening snow showers likely (70%), a slight (20%) chance of showers late Thursday night (1 in. of snow possible), partly cloudy in the AM, mostly sunny Friday afternoon, partly cloudy Friday night, a mix of clouds and sun Saturday, then partly cloudy Saturday night snow level 3,000 ft. tonight, at the surface Thursday and Thursday night, free air freezing level at the surface Saturday, then 4,500 ft. Saturday night lows 26-17 warming to 22 Saturday night highs near 33. Partly cloudy Sunday and Sunday night, mostly sunny Monday, partly cloudy Monday night and Tuesday, then mostly cloudy with a slight (20%) chance of rain and snow showers Tuesday night and Wednesday snow level at the surface Friday, free air freezing 5,500 ft. Sunday, 6,500 ft. Sunday night, 5,500 ft. Monday, 6,500 ft. Monday night, 6,000 ft. Tuesday, snow level 5,500 ft. Tuesday night, then 5,000 ft. Wednesday highs 40-43 cooling to 40 Wednesday lows 22-26.
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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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