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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: A WINTER WEATHER ADVISORY IS IN EFFECT ABOVE 3,500 FT. UNTIL 11 AM TODAY FOR THE EAST SLOPES OF THE NORTH OREGON CASCADES AND EASTERN FOOTHILLS. THE AREA INCLUDES BROTHERS, PAULINA, PRAIRIE CITY, SENECA, BEND, LA PINE, AND SUNRIVER. THERE IS THE POTENTIAL FOR 1-4 IN. OF SNOW IN THE EAST SLOPES OF THE OREGON CASCADES WITH THE HEAVIEST ACCUMULATION WILL BE SOUTH OF BEND AND AND NEAR THE CASCADE CREST. EXPECT 1-3 INCHES OF SNOW TH THE JOHN DAY-OCHOCO HIGHLANDS WITH THE HEAVIEST SNOWFALL EXPECTED ABOVE 4,000 FT.
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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 a slight (20%) chance of isolated thunderstorms and possible small hail this AM, showers and a slight (20%) chance of thunderstorms this afternoon (0.10 in. of rain possible, snow level 3,000 ft. rising to 3,500 ft.), showers this evening, rain late tonight (0.10 in. of rain possible, snow level 3,500 ft.), mostly cloudy with showers likely (60%) Tuesday (snow level 3,000 ft. rising to 3,500 ft. in the afternoon, under 0.10 in. of rain possible), showers in the evening, showers likely (60%) Tuesday night (under 0.10 in. of rain possible, snow level 3,500 ft.), AM showers, showers and a slight (20%) chance of afternoon thunderstorms Wednesday (0.15 in. of rain possible, snow level 3,000 ft. rising to 3,500 ft.), then showers likely (60%) Wednesday night highs 52-50 lows 40-39. Mostly cloudy with a (40%) chance of showers Thursday, mostly cloudy with a slight (20%) chance of showers Thursday night, a (40%) chance of showers Friday through Saturday, then cloudy with a (30%) chance of showers Saturday night and Sunday highs 55-60 lows 39-48. (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 rain and a slight (20%) chance of isolated thunderstorms this AM, showers with a slight (20%) chance of thunderstorms this afternoon (0.15 in. of rain possible, small hail possible), showers and isolated coastal thunderstorms this evening, showers in the evening with rain and a slight (20%) chance of thunderstorms inland late tonight (0.15 in. of rain possible), showers with a slight (20%) chance of coastal thunderstorms and showers inland Tuesday afternoon (0.20 in. of rain possible), showers inland while showers likely (60%) with a slight (20%) chance of coastal thunderstorms Tuesday night (0.15 in. of rain possible), mostly cloudy with rain Wednesday (0.40 in. of rain possible), then showers Wednesday night highs 53-50 lows 43-40. Mostly cloudy with a (40%) chance of showers and slightly warmer Thursday, a slight (20%) chance of showers Thursday night, mostly cloudy with a (40%) chance of showers Friday and Friday night, then cloudy with a good (50%) chance of showers Saturday through Sunday highs 56-62 lows 43-50. (seasonal averages high 60 low 45)
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Forecast for the Cascades of Lane County: Mostly cloudy with rain and snow showers with a slight (20%) chance of thunderstorms and small hail this afternoon (0.25 in. of rain possible, 1-4 in. of snow possible above 4,500 ft, a light dusting at 3,500 ft.), scattered rain and snow showers likely (60%) tonight (0.10 in. of rain possible, 2.00 in. of snow possible), cloudy with rain and snow showers (0.10 in. of rain possible, 1 in. of snow possible) Tuesday, a good (50%) chance of rain and snow showers Tuesday night, then rain and snow showers likely (70%) Wednesday and Wednesday night snow level 3,500 ft. today, 3,000 ft. tonight and Tuesday, 3,500 ft. Tuesday night through Wednesday night highs 34-37 lows 27-24. Mostly cloudy with a (40%) chance of rain and snow showers Thursday, a slight (20%) chance of rain and snow showers at night, a mix of clouds and sun with a (30%) chance of rain and snow showers Friday, partly cloudy with a (40%) chance of rain and snow showers Friday night, mostly cloudy with a good (50%) chance of showers Saturday, then cloudy with a good (50%) chance of showers Saturday night and showers likely (60%) Sunday snow level 3,500 ft. Thursday, 4,000 ft. Thursday night and Friday, 5,500 ft. Friday night, 6,000 ft. Saturday, 7,000 ft. Saturday night, then 8,000 ft. Sunday highs 39-49 lows 24-29.
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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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