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A trough of low pressure (shaded area that’s “U” shaped )  is stalled and high pressure behind it is set up to have storms push down from the northwest at us. A new frontal system is on its way. The warm front is moving in now and the cold front behind it will come through Oregon late tonight and Monday.

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Advisories: A WINTER WEATHER ADVISORY IS IN EFFECT FROM 8 AM MONDAY UNTIL 8 AM TUESDAY FOR THE NORTH OREGON CASCADES INCLUDING GOVERNMENT CAMP, DETROIT, AND SANTIAM PASS  BUT NOT THE CASCADES OF LANE COUNTY. A WIND ADVISORY IS IN EFFECT FROM 2 AM TO 11 AM MONDAY FOR THE CENTRAL WILLAMETTE VALLEY INCLUDING SALEM. A HIGH WIND WARNING IS IN EFFECT FROM 1 PM UNTIL 9 PM MONDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY.

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The Pollen Count Forecast for the Eugene-Springfield area : Trees HIGH, Grass LOW, and Weeds ABSENT. From Allergy and Asthma Research Group.

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Here are your detailed forecasts. **

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:  Mostly cloudy with a slight (20%) chance of evening rain and a good (50%) or rain late tonight low 44. Mostly cloudy with rain Monday AM and showers likely (60%) and breezy (winds South 15-25 mph gusts to 45 mph then West 10-15 mph in the afternoon) in the afternoon then partly cloudy with a (30%) chance of showers Monday night  high 56 low 40. Mostly cloudy with a (40%) chance of showers Tuesday and Tuesday evening then partly cloudy with a slight (20%) chance of showers late at night high 50 low 35.  Partly cloudy with a slight (20%) chance of showers Wednesday through Saturday highs 58-66 lows 36-42. Mostly cloudy with a (40%) chance of showers Saturday night and partly cloudy with a (40%) chance of showers Sunday low 42 high 63.

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Forecast for the Umpqua Basin including Roseburg:  Mostly cloudy with a slight (20%) chance of rain tonight, rain likely (60%) Monday morning with a (40%) chance in the afternoon and a slight (20%) chance of showers Monday night lows 48-42 high 62. Mostly cloudy with a  slight (20%) chance of rain and snow showers Tuesday AM, then a slight (20%) chance of afternoon showers snow level 2,500 ft. rising to 3,000 ft. in the afternoon then a slight (20%) chance of evening showers high 56 low 35. Just a slight (20%) chance of showers Wednesday and Wednesday night and partly cloudy Thursday with a slight (20%) chance of showers highs 62-68 low 37 Mostly cloudy with a slight (20%) chance of showers Thursday night through Saturday lows 38-43 highs near 65. Mostly cloudy with a (30%) chance of showers Saturday night and a slight (20%) chance  showers Sunday low 43 high 65.

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Forecast for the South Oregon Coast including Coos Bay and North Bend:  Mostly cloudy with a (40%) chance of rain tonight then mostly cloudy with rain Monday morning and a good (50%) chance of afternoon rain low 48 high 55. Mostly cloudy Monday night with a slight (20%) chance of evening showers inland then just a slight (20%) chance of showers Tuesday and a slight (20%) chance in the evening lows 40 high 57. Mostly cloudy with just a slight (20%) chance of showers Wednesday through Saturday highs 56-60 lows 38-44. Mostly cloudy with a slight (20%) chance of showers Saturday night and Sunday low 42 high 62.

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Forecast for the Cascades of Lane County:  Mostly cloudy with a slight (20%) chance of evening rain then rain likely (60%) late tonight snow level 7,000 ft. low near 30. Mostly cloudy and windy (winds West 20-30 mph gusts to 45 mph) with AM rain and afternoon showers Monday  1-3 in. of snow possible, snow level 6,000 ft. falling to 5,000 ft. in the afternoon high 44. Mostly cloudy with a (30%) chance of evening rain and snow showers then partly cloudy and colder with a (30%) chance of snow showers Monday night snow level 3,500 ft. falling to 2,500 ft. late at night low 22. Mostly cloudy with a (30%) chance of snow showers Tuesday, a (40%) chance of rain and snow showers Tuesday night snow level 2,500 ft. rising to 3,000 ft. at night high 37 low 26. Partly cloudy with a (30%) chance of rain and snow showers Wednesday and a slight (20%) chance of rain and snow showers Wednesday night through Thursday night snow level 3,500 ft. rising to 4,500 ft. Thursday, and 5,000 ft. Thursday night highs near 44-49 lows 26-29. Partly cloudy with a slight (20%) chance of showers Friday and Friday night night snow level 6,000 ft. high 56 low near 30. Partly cloudy with a (30%) chance of showers Saturday snow level 5,000 ft. high 50. Partly cloudy with a (30%) chance of showers Saturday, a (30%) chance of rain and snow showers  Saturday night, and partly cloudy with a (30%) chance of showers Sunday snow level 6,000 ft. Saturday, 5,000 ft. Saturday night, and Sunday highs 52-45 low 30.

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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.