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Sorry. No winner this week.
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Here is my weekly weather quiz question for the last time. Who worked on mathematical models for weather prediction providing the basis for the first successful numerical (computer) forecasting models? He is also credited with predicting the existence of jet streams and developing the main theories describing their behavior. Here is the answer. Carl Gustav Rossby provided the basis for the first computer forecasting models. He also pioneered work on the general circulation of the atmosphere and the meandering long wave patters of westerly air flow in the upper troposphere that are now known as Rossby waves. I’ll have a new weekly weather quiz question for you starting next Monday. 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.
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Advisories: NONE AT THIS TIME.
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An upper level trough of low pressure (“U” shape) is moving across the Pacific Northwest and has spread some showers mainly from the Northern third of Oregon North into Washington. Behind it will be a high pressure ridge (“arch” shape) over the weekend that should dry us out for a while at least, but another trough will follow closely behind the ridge trying to bring the clouds back. A new frontal system (position shown is Monday as it has passed through) aims at the Pacific Northwest on Saturday but at this time it looks like it will fall apart before it makes landfall late in the weekend. Will it bring just clouds or will we get more showers? The best chance for showers will be in the Cascades starting Monday.
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Here are your detailed forecasts.**
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Sunny and warmer today, mostly clear tonight, mostly sunny and slightly warmer Sunday, mostly clear in the evening, mostly cloudy Sunday night and Monday and cooler, then partly cloudy Monday night highs 86-87 cooling to 77 Monday lows 50-55 cooling to near 50 Monday night. A mix of clouds and sun Tuesday, mostly cloudy Tuesday evening, partly cloudy late Tuesday night, a mix of clouds and sun Wednesday, then partly cloudy Wednesday night through Friday highs 74-83 lows near 50. (seasonal averages high 83 low 51)
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The Pollen forecast for the Eugene/Springfield Area is for weeds to be absent, trees to be low, and Grass to be low. (Provided by Allergy and Asthma Research Group)
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Forecast for the Umpqua Basin including Roseburg: Sunny and warmer today, mostly clear tonight, partly cloudy Sunday AM, mostly sunny and warmer Sunday afternoon, partly cloudy in the evening, then mostly cloudy late Sunday night through Monday night highs 90-76 lows 58-56. Mostly cloudy Tuesday, partly cloudy in the evening, mostly cloudy Tuesday night through Wednesday night, then just partly cloudy Thursday through Friday highs 78-89 lows near 54. (seasonal averages high 87 low 55)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy with patchy fog possible this AM, mostly sunny this afternoon, partly cloudy in the evening, mostly cloudy with patchy fog late tonight and Sunday AM, cloudy Sunday afternoon, mostly cloudy with patchy coastal fog late Sunday night and early Monday AM and a slight (20%) chance of AM rain, just mostly cloudy in the afternoon, and Monday night highs 66-62 lows 55-58 cooling to 54 Monday night. Mostly cloudy with patchy fog Tuesday AM, mostly cloudy in the afternoon, partly cloudy in the evening, mostly cloudy Tuesday night through Thursday AM, then partly cloudy Thursday afternoon through Friday highs near 65 lows 56-52. (seasonal averages high 67 low 53).
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Forecast for the Cascades of Lane County: Sunny and warmer today, clear tonight, mostly sunny and warmer Sunday with a slight (20%) chance of thunderstorms in the afternoon, partly cloudy Sunday evening with a slight (20%) chance of thunderstorms mainly South of Waldo Lake, mostly cloudy late Sunday night, partly cloudy and cooler Monday with a slight (20%) chance of showers in the afternoon, then partly cloudy with a slight (20%) chance of showers Monday night free air freezing level 14,000 ft. today, 15,000 ft. tonight and Sunday, 14,000 ft. Sunday night, then a snow level above 8,000 ft. Monday and Monday night highs 77-81 cooling to 65 Monday lows 50-42. Partly cloudy with a slight (20%) chance of showers Tuesday through Wednesday, just partly cloudy Wednesday night through Friday AM, then mostly sunny Friday afternoon snow level above 8,000 ft. Tuesday through Wednesday, then rising to a free air freezing level of 15,000 ft. Wednesday night through Friday highs 60-70 cooling to near 65 Friday lows 42-46.
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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 EugeneDailyNews.com.
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