Here again is my new weekly weather quiz question for this week. Who discovered Halley’s comet? Please post your answer as a comment after the forecasts. The first person to post the correct answer will win one free week of personalized forecasts tailored to your needs. Good luck.

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An upper level trough of low pressure (Shaded “U” area with blue arrows into Northern California). A  stronger frontal system offshore  will moved in bringing wind and more rain into Oregon today and tonight.

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Advisories:  A HIGH WIND WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR THE NORTH OREGON COAST AND UNTIL 7 PM FOR THE CENTRAL OREGON COAST. A WIND ADVISORY IS IN EFFECT UTIL 11 PM TONIGHT FOR THE COAST RANGE OF NORTHWEST OREGON AND FOR THE LOWER COLUMBIA I-5 CORRIDOR , THE GREATER PORTLAND AREA, AND THE CENTRAL WILLAMETTE VALLEY.  A WIND  ADVISORY IS IN EFFECT UNTIL 2 AM THURSDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.

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The Pollen Count Forecast for the Eugene-Springfield area : Trees MODERATE, Grass LOW, weeds Absent.

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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 thunderstorms this evening, showers likely (60%) tonight and windy (winds Southwest 15-25 mph gusts to 40 mph dropping to Southwest 10-15 mph late at night)  low 42. Mostly cloudy with showers likely (60%) Thursday morning then a good (50%) chance of showers in the afternoon, showers likely (60%) at night, Friday morning and afternoon highs 60-53 low 40. Mostly cloudy with showers likely (60%) Friday night low 38. Mostly cloudy with a good (50%) chance of showers Saturday and (30%) Saturday night high 56 low 40. Mostly cloudy Sunday and a bit warmer with a slight (20%) chance of showers high 63. Partly cloudy with a slight (20%) chance of showers Sunday night through Monday night lows 45 high 66.  Mostly cloudy with a slight (20%) chance of showers Tuesday and a (40%) chance of showers Tuesday night and Wednesday highs 62-67 low 44 .

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with showers and isolated thunderstorms this evening and showers likely (60%) late tonight and Thursday morning then a () chance of showers Thursday afternoon and evening snow level 3,000 ft. late tonight and Thursday low 44 high 57. Showers likely (60%) late Thursday night and showers Friday snow level 3,500 ft. Thursday night and Friday low 44 high 56. Mostly cloudy with showers likely (60%) Friday evening and late Friday night then rain  and snow showers likely (60%) Saturday morning and a good (50%) chance in the afternoon low 39 high 58. Mostly cloudy with (40%) chance of showers Saturday night and a slight (20%) chance of showers Sunday and Sunday night  lows 46-42 high 64. Mostly cloudy with a slight (20%) chance of showers Monday and Monday night, then a (40%) chance of showers Tuesday and a good (50%) chance Tuesday night and Wednesday highs 69-63 lows 45-49.

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Showers and isolated thunderstorms this evening then showers late tonight and windy (winds Southwest 25-35 mph then decreasing to Southwest at 10-20 mph late this evening and tonight at the shore and Southwest 20-25 mph decreasing to 10-15 mph by late evening and tonight inland) low 45. Mostly cloudy with showers likely (60%) Thursday morning , a slight (20%) chance in the afternoon, cloudy with a (30%) chance in the evening, and showers late at night high 56 lows  43. Mostly cloudy with showers Friday and showers likely (60%) Friday night and Saturday highs  52-50 low 43. Mostly cloudy with a (40%) chance of showers Saturday night low 47 . A slight (20%) chance of showers Sunday and a (40%) of showers Sunday night and Monday highs 57-60 low 43. Mostly cloudy with a slight (20%) chance of showers Monday night and a good (50%) chance of showers Tuesday through Wednesday lows 47-50 highs near 60.

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Forecast for the Cascades of Lane County:  Mostly cloudy and breezy (winds Southwest 15-25 mph gusts to 45 mph on the ridges) with rain and snow showers tonight (1-3 in. of snow possible) then rain and snow showers likely (60%) Thursday (1-3 in. of snow possible ) with a (50%) chance of evening rain and snow showers, then rain and snow showers likely (60%) at night ( 1-2 in. of snow possible) snow level 5,000 ft. falling to  3,000 ft. late tonight, 3,500 ft. Thursday rising to 4,000 ft. Thursday night lows 30-28 high 40. Rain and snow showers likely (60%) Friday morning then rain and snow showers Friday evening and likely (60%) at night snow level 3,500 ft. rising to 4,000 ft. high 35 low 25. Mostly cloudy with a (40%) chance of rain and snow showers Saturday and Saturday night snow level 3,000 ft. rising to 4,000 ft. Saturday night high 40 low 29. Mostly cloudy Sunday morning, a mix of clouds and sun in the afternoon with a (30%) chance of showers snow level 5,000 ft. high 45. Partly cloudy with a (20%) chance of showers Sunday night and Monday snow level 5,500 ft. Sunday night rising to 6,000 ft. Monday low 32 high 54. Partly cloudy with a slight (20%) chance of showers Monday night low 33. Mostly cloudy with a (30%) chance of showers Tuesday through Wednesday snow level 5,500 ft. Tuesday, 5,000 ft. Tuesday night, and Wednesday highs 52-56 low 33 .

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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.