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It’s Monday and that means it is time for a new weekly weather quiz question. Here it is. What is a “halo?” 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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An upper level low (the shaded ”U” shape on the jet stream) is continuing to send moist air into the Pacific Northwest producing more clouds and the chance of rain while lowering mountain snow levels down to the passes. This storm is producing the first snowfall of the season at pass levels. That trough of low pressure will stay with us through the week with a possible break toward the end of the week.
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers and isolated thunderstorms this evening, showers likely (60%) with a slight (20%) chance of isolated thunderstorms late tonight (snow level 2,500 ft. rising to 3,000 ft. late, under 0.10 in. of rain possible), showers likely (60%) with a slight (20%) chance of scattered thunderstorms with small hail possible Tuesday AM, showers likely (60%) in the afternoon and evening (under 0.10 in. of rain possible), showers late Tuesday night (under 0.10 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft. late), AM showers likely (60%), showers and a slight (20%) chance of isolated afternoon thunderstorms with possible small hail Wednesday afternoon (0.15 in. of rain possible, snow level 3,000 ft. rising to 3,500 ft.), then showers likely (60%) Wednesday evening, a good (50%) chance of showers Wednesday night, a slight (20%) chance of rain and snow showers Thursday AM, a slight (20%) chance of showers in the afternoon, then mostly cloudy with a slight (20%) chance of showers Thursday night lows 40-39 highs 54-50 warming to 57. Mostly cloudy with a (40%) chance of showers Friday and Friday night, mostly cloudy with a (40%) chance of showers Saturday, cloudy with a (30%) chance of showers Saturday night and Sunday, mostly cloudy with a (40%) chance of showers Sunday night, then cloudy with a (40%) chance of showers Monday highs 55-60 cooling to 54 Monday lows 44-49. (seasonal averages high 63 low 44)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with showers and isolated thunderstorms this evening, showers likely (60%) with a slight (20%) chance of thunderstorms with small hail possible late tonight (0.15 in. of rain possible), showers with a slight (20%) chance of isolated thunderstorms Tuesday AM, showers Tuesday afternoon (0.20 in. of rain possible), showers Tuesday night (0.25 in. of rain possible), mostly cloudy with coastal showers likely (60%) and a slight (20%) chance of isolated thunderstorms Wednesday AM, AM showers likely (60%) inland with showers and isolated thunderstorms with small hail possible Wednesday (0.20 in. of rain possible), showers likely (60%) Wednesday night (under 0.10 in. of rain possible), then mostly cloudy with a slight (20%) chance of showers Thursday and Thursday night lows 43-40 warming to 44 Thursday night highs 55-50 warming to 57 Thursday. Mostly cloudy with a (40%) chance of showers Friday through Sunday night, then cloudy with a good (50%) chance of showers Monday highs 57-62 cooling to 58 Monday lows 48-52. (seasonal averages high 60 low 45)
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Forecast for the Cascades of Lane County: Mostly cloudy with scattered rain and snow showers with some small hail possible tonight (0.10 in. of rain possible, 2.00 in. of snow possible), rain and snow showers increasing (0.10 in. of rain possible, 2 in. of snow possible) Tuesday, rain and snow showers with small hail possible Tuesday night, rain and snow showers likely (70%) Wednesday and Wednesday night, mostly cloudy with a (40%) chance of rain and snow showers Thursday, then a slight (20%) chance of rain and snow showers Thursday night snow level 3,000 ft. tonight and Tuesday, 3,500 ft. Tuesday night through Thursday, then 4,000 ft. Thursday night lows 27-24 highs 34-37. A mix of clouds and sun with a slight (20%) chance of rain and snow showers Friday, mostly cloudy with a (30%) chance of rain and snow showers Friday night, mostly cloudy with a good (50%) chance of showers Saturday, cloudy with a good (50%) chance of showers Saturday night, showers likely (60%) Sunday, mostly cloudy with a good (50%) chance of showers Sunday night, then cloudy with a good (50%) chance of showers Monday snow level 4,000 ft. Friday, 5,500 ft. Friday night, 6,000 ft. Saturday, 7,500 ft. Saturday night, 8,000 ft. Sunday and Sunday, then above 8,000 ft. Monday highs 39-49 lows 29-32.
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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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