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Check out my new Weather Or Not Column In Times Of Trouble It’s OK to Be Thankful.
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No winner this week. Here is my weekly weather quiz question for the last time. What is a “wall cloud?” Here is the correct answer. A wall cloud is a localized, persistent, often abrupt lowering from a rain-free base. Wall clouds can range from a fraction of a mile up to nearly five miles in diameter, and normally are found on the south or southwest (inflow) side of the thunderstorm. When seen from within several miles, many wall clouds exhibit rapid upward motion and cyclonic rotation. However, not all wall clouds rotate. Rotating wall clouds usually develop before strong or violent tornadoes, by anywhere from a few minutes up to nearly an hour. Wall clouds should be monitored visually for signs of persistent, sustained rotation and/or rapid vertical motion. I’ll have another weather quiz question for you starting 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. Good luck.
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We’ll be drying out as an upper air high pressure ridge (growing shaded “Arch” shape) builds in protecting us from any storms. It looks like a partly cloudy and pleasant day today for the Prefontaine Classic at Hayward Field. A frontal system will bring us some clouds tonight and Sunday AM with a slight chance of drizzle at the coast, but the rest of will stay dry. Next week is looking dry, bright, and quite a bit warmer. Today, June 1, is the beginning of the Atlantic-Caribbean Hurricane season.
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Advisories: NONE AT THIS TIME.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Partly cloudy today after some patchy AM fog, mostly cloudy tonight, cloudy Sunday AM, a mix of clouds and sun in the afternoon, partly cloudy and colder Sunday night, partly cloudy with patchy fog Monday AM, then mostly clear Monday night highs 76-70 warming to 75 Monday lows 48-42 warming to 44 Monday night. Mostly sunny Tuesday, Wednesday, and Thursday and mostly cloudy each night, then partly cloudy at Thursday night and Friday highs 83-75 lows 48-51. (seasonal averages high 70 low 46)
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Forecast for the Umpqua Basin including Roseburg: Sunny today after patchy AM fog, partly cloudy tonight and Sunday, partly cloudy in the evening, mostly clear at night, sunny and warmer Monday, then mostly clear Monday night highs 79-74 warming to 82 Monday lows 52-48. Mostly sunny Tuesday, mostly clear skies at night, then partly cloudy Thursday through Friday highs 86-78 lows near 52. (seasonal averages high 73 low 50)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Cloudy this AM and partly cloudy this afternoon at the shore while patchy AM fog and sunny this afternoon inland, partly cloudy with areas of patchy fog and a slight (20%) chance of coastal drizzle late tonight and Sunday AM, patchy lingering fog in the afternoon, mostly cloudy with areas of patchy AM fog inland and partly cloudy with patchy lingering afternoon fog and breezy (wind: N 10-15 mph increasing to N 20-25 in the afternoon), cloudy with patchy coastal fog while mostly clear inland with patchy fog late Sunday night and breezy (wind: N 20-25 mph decreasing to N 10-20 mph at night at the shore late and N 15-20 mph decreasing to N 5-10 mph late Sunday night inland), cloudy with patchy fog Monday AM, sunny in the afternoon, then mostly clear Monday night highs 65-60 warming to 64 Monday lows 52-48 warming to 52 Monday night. Mostly sunny and warmer Tuesday, mostly clear at night, partly cloudy Wednesday, partly cloudy Wednesday night through Thursday night, then AM clouds and partly cloudy Friday afternoon highs 60-65 lows 50-53. (seasonal averages high 60 low 49)
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Forecast for the Cascades of Lane County: Mostly sunny this AM, partly cloudy this afternoon and evening, mostly cloudy tonight and Sunday AM, a mix of clouds and sun in the afternoon, partly cloudy Sunday night, mostly sunny and warmer Monday, then clear Monday night free air freezing level 11,000 rising to 12,000 ft. this afternoon through Sunday night, 13,000 ft. Monday, then 14,000 ft. falling to 13,000 ft. Monday night highs 65-58 warming to near 70 Monday lows 40-36 warming to 43 Monday night. Sunny Tuesday, mostly clear at night, mostly sunny Wednesday and Thursday with mostly clear skies Wednesday night free air freezing level 13,000 ft. rising to 14,000 ft. Tuesday, 14,000 ft. Tuesday night through Wednesday night, 14,000 ft. falling to 13,000 ft. Thursday and Thursday night, then 14,000 ft. Friday highs 72-60 lows 44-48.
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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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