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Advisories:  A WINTER WEATHER ADVISORY IS IN EFFECT ABOVE 3,500 FT. FROM 10 PM THIS EVENING UNTIL 11 AM MONDAY 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.

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with showers and isolated thunderstorms this evening, rain late tonight (0.20 in. of rain possible, small hail possible), rain with a slight (20%) chance of isolated thunderstorms Monday AM, showers and a slight (20%) chance of thunderstorms in the afternoon (0.20 in. of rain possible, snow level 3,500 ft.), showers Monday evening, showers likely (60%) late Monday night (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 likely (60%) Tuesday night (under 0.10 in. of rain possible, snow level 3,500 ft.), rain Wednesday, then showers likely (60%) Wednesday night lows 42-39 highs 51-50. Mostly cloudy with a (40%) chance of showers Thursday, mostly cloudy with a (40%) chance of showers Thursday night through Saturday, then cloudy with a (30%) chance of showers Saturday night and Sunday highs 55-60 lows 39-48. (seasonal averages high 64 low 44)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with  showers and a slight (20%) chance of isolated thunderstorms this evening, rain late tonight inland with rain and a slight (20%) chance of thunderstorms late tonight inland (0.30 in. of rain possible, small hail possible), rain with a slight (20%) chance of isolated thunderstorms Monday AM, showers with a slight (20%) chance of thunderstorms in the afternoon (0.25 in. of rain possible, small hail possible), showers and isolated coastal thunderstorms in the evening, showers in the evening with showers likely (60%) inland Monday night (0.25 in. of rain possible), showers inland while showers with a slight (20%) chance of thunderstorms inland Tuesday afternoon (0.25 in. of rain possible), showers likely (60%) 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, then showers Wednesday night lows 45-40 highs 53-50. 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 50-62 lows 43-50. (seasonal averages high 60 low 46)

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Forecast for the Cascades of Lane County: Mostly cloudy with rain and snow showers tonight (0.25 in. of rain possible, 1-3 in of snow possible), rain and snow showers with a slight (20%) chance of thunderstorms and small hail Monday afternoon (0.25 in. of rain possible, 2-5 in. of snow possible), scattered rain and snow showers likely (60%) Monday night (0.10 in. of rain possible, 1.00 in. of snow possible), cloudy with a good (50%) chance of rain and snow showers Tuesday and Tuesday night, then rain and snow showers likely (70%) Wednesday and Wednesday night snow level 4,000 ft. tonight, 3,500 ft. Monday, 3,000 ft. Monday night 3,500 ft. Tuesday through Wednesday, then 4,000 ft. Wednesday night lows 29-24 highs 35-37. 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 mostly cloudy with a (40%) chance of rain and snow showers Saturday night and 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 37-49 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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