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Sorry, no winner this week. Here is my weather quiz question for the last time this week. What is a supercell? Here is the correct answer. A supercell is an often dangerous convective storm with a very organized internal structure including a rotating updraft that allows it to keep going for up to several hours. Supercells are capable of producing severe weather including high winds, large hail, and strong tornadoes. They are most frequently isolated and often develop in the warm air ahead of a squall line. A supercell also usually forms in an environment with strong vertical wind shear that causes the updraft to begin rotating. I’ll have another 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. Good luck.
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Advisories: NONE AT THIS TIME
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A high pressure ridge (Partially shaded “Arch” shape with blue arrows over Western Canada) is bringing continued sunshine to the Pacific Northwest for the rest of the weekend into next week. We’re still under the Full Harvest Moon so enjoy the bright nights. A backdoor cold front (meaning moving from northeast to southwest) will swing down between Tuesday and Wednesday.
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Forecast for the Umpqua Basin including Roseburg: Sunny and a bit warmer today, mostly clear tonight, sunny and a bit warmer Monday, mostly clear in the evening, mostly cloudy Monday night, then partly cloudy Tuesday AM, sunny Tuesday afternoon, then mostly clear Tuesday night highs 80-86 cooling to 75 Tuesday lows 47-52 cooling to 44 Tuesday night. Mostly sunny Wednesday through Friday with mostly clear nights, then partly cloudy Friday night and Saturday highs near 78 lows 40-47. (seasonal averages high 74 low 48)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Sunny today, mostly clear tonight, sunny Monday, then mostly clear in the evening, partly cloudy late Monday night with patchy coastal fog, mostly cloudy with patchy AM fog, mostly sunny Tuesday afternoon, then mostly clear Tuesday night highs near 62 lows 48-52 cooling to 45 Tuesday night. Mostly sunny Wednesday and Thursday with mostly clear nights, AM fog, partly cloudy Friday and Friday night, then partly cloudy with a slight (20%) chance of showers Saturday highs 65-62 lows 45-48. (seasonal averages high 63 low 48).
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Forecast for the Cascades of Lane County: Mostly sunny today, clear tonight, sunny and a bit warmer Monday, mostly clear Monday night, partly cloudy Tuesday AM, mostly sunny in the afternoon, then partly cloudy Tuesday night free air freezing level 15,000 ft. today through Monday night, then 13,000 ft. Tuesday and Tuesday night highs 72-75 cooling to near 70 Tuesday lows 45-42. Sunny Wednesday, clear in the evening, partly cloudy late Wednesday night, mostly sunny Thursday, partly cloudy Thursday night, mostly sunny Friday AM, then partly cloudy Friday afternoon through Saturday free air freezing level 13,000 ft. Wednesday through Thursday night, 12,000 ft. Friday and Friday night, then 11,000 ft. Saturday highs 67-59 lows near 39.
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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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