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Check out my EDN 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 (shaded “Arch” shape with blue arrows) is building back to protect us from any storms. The upper low (small “U” shape) that brought in more clouds and a little drizzle is moving away from us. A frontal system moved in bringing us some clouds with a slight chance of drizzle. This week is looking dry, bright, and quite a bit warmer. Another frontal system will push into the Pacific Northwest Thursday, but again it looks weak and will fall apart so we’ll only see a few clouds but no precipitation.
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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 and cooler with patchy fog tonight and Monday AM, mostly sunny Monday afternoon, Tuesday, and Wednesday with mostly clear skies at night lows 43-48 highs 77-82 cooling to near 80 Wednesday. A mix a mix of clouds and sun Thursday, partly cloudy Thursday night, a mix of clouds and sun Friday AM, mostly sunny in the afternoon, partly cloudy at night and Saturday AM, then mostly sunny Saturday and Sunday with mostly clear skies at night highs 77-80 cooling to 78 Sunday lows 48-52 cooling to 48 Friday night. (seasonal averages high 70 low 46)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy tonight, partly cloudy in the AM, sunny and warmer Monday afternoon, clear at night, sunny Tuesday, clear at night, mostly sunny Wednesday, then mostly clear at night lows 49-53 highs 83-87. Partly cloudy Thursday AM, sunny in the afternoon, mostly clear Thursday night, mostly sunny Friday, clear at night, then mostly sunny Saturday and Sunday with mostly clear skies at night highs near 85 lows 52-56. (seasonal averages high 73 low 50)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Clear this evening, mostly cloudy with patchy coastal fog late tonight while mostly clear inland, breezy (wind: N 10-20 mph decreasing to N 10-15 late inland while N 15-25 mph at the shore) late at night, cloudy with patchy coastal fog Monday AM, sunny in the afternoon, mostly clear in the evening and cloudy late at night at the shore, while mostly clear inland Monday night, sunny and warmer Tuesday, clear in the evening and cloudy with patchy fog late at night and Wednesday AM, sunny Wednesday afternoon, then partly cloudy Wednesday night lows 49-52 highs 62-65 cooling to 62 Wednesday. Partly cloudy Thursday and Thursday night, mostly sunny Friday and Saturday with mostly clear nights, then partly cloudy Sunday highs 64-68 cooling to near 62 Sunday lows near 53. (seasonal averages high 60 low 49)
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Forecast for the Cascades of Lane County: Partly cloudy tonight, mostly sunny Monday, Tuesday and Wednesday , with clear skies at night free air freezing level 12,000 ft. tonight, 13,000 ft. Monday, 14,000 ft. Monday night, 13,000 ft. Tuesday, then 14,000 ft. Tuesday night through Wednesday night lows 37-48 cooling to 42 Wednesday night highs 67-72 cooling to near 70 Wednesday. Mostly sunny Wednesday and Thursday with mostly clear skies Wednesday night and partly cloudy Thursday night, mostly sunny Friday, partly cloudy at night, then mostly sunny Saturday free air freezing level 14,000 ft. Wednesday and Wednesday night, 13,000 ft. Thursday, 14,000 ft. late Thursday night, 15,000 ft. Friday and Friday night, then 16,000 ft. Saturday highs 65-75 cooling to 72 Saturday lows 48-52 cooling to 48 Saturday night.
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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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