Here is this week’s weather quiz question. What is the best tornado detector? Please place your answer as a comment after the forecasts on this page. The first person to post the correct answer will win one week of free personalized forecasts tailored to your needs. Good luck.

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The high pressure ridge, that gave us such a great weekend, is moving eastward  as a trough of low pressure (shaded area that’s “U” shaped offshore) will start pumping moist air and sending a frontal system our way. The warm front will push to our North, but the cold front will sweep into Western Oregon and the trough will slowly migrate to the east keeping the chace for wet weather with us for the week.

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Advisories: NONE AT THIS TIME.

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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: More clouds with a (30%) chance of rain by this afternoon, rain at night and showers and cooler Tuesday highs 64-54 low 44. Showers likely (60%) Tuesday night through Thursday night lows 40-43 highs 55-58 . Mostly cloudy with a good (50%) chance of showers Friday and partly cloudy Friday night with a slight (20%) chance  showers high 60 low 43. A mix of clouds Saturday and Sunday with partly cloudy skies Saturday night highs 62-64 low 43.

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy and colder today with a (40%) chance of rain this afternoon high 65. Mostly cloudy with rain tonight and showers Tuesday through Wednesday lows 46-43 highs 56-52. Showers likely (60%) Wednesday night and showers Thursday and Thursday night high 56  lows 38-36. Mostly cloudy with a (40%) chance of showers Friday and a slight (20%) chance Friday night high 57 low 40. Partly cloudy Saturday through Sunday and warmer highs 63-72 low 43.

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Forecast for the South Oregon Coast including Coos Bay and North Bend:  Cloudy today with a slight (20%) chance of AM rain and  then afternoon rain likely (60%) and breezy (winds South 10-20 mph then 20-30 mph) at the coast in the afternoon with a (30%) chance of afternoon rain inland low 44 high 58. Rain and breezy (winds Southwest 15-25 mph gusts to 40 mph then Southwest 15-20 mph late at night) tonight then showers Tuesday with showers likely (60%) at the shore and showers inland at night lows 49-44 high 54. Showers Wednesday and showers likely (60%) Wednesday night then showers Thursday and Thursday night highs 52-56 lows near 40. Mostly cloudy with showers  likely (60%) Friday morning then a (60%) chance of afternoon showers and a slight (20%) chance at night high 55 low 43. Partly cloudy  Saturday through Sunday highs 58-62 low 43 .

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Forecast for the Cascades of Lane County:  Mostly cloudy and cooler this afternoon with rain  and snow at night (2 in. to 5 in. of snow possible) free air freezing level 9,000 ft. today and snow level 6,500 ft. in the evening and to 5,000 ft. late at night high 55 low 30 . Mostly cloudy and colder with rain and snow showers Tuesday through Wednesday snow level 4,000 ft. falling to 3,000 ft. Tuesday afternoon (3 in. of snow possible), 3,000 ft. Tuesday night, and 3,500 ft. Wednesday highs 42-34 low 27. Rain and snow showers likely (60%) Wednesday night through Thursday night snow level rising to 4,000 ft. Thursday and falling back to 3,500 ft. Thursday night lows 27-25 high 42. Mostly cloudy with a good (50%) chance of rain and snow showers Friday snow level 4,500 ft. high 46. Partly cloudy with a (40%) chance of rain and snow showers Friday night and a slight (20%) chance of showers Saturday falling to 4,000 ft. Friday night low 30 highs 49 . Partly cloudy Saturday night and a mix of clouds and sun Sunday free air freezing level 8,000 ft. rising to 11,000 ft. Sunday low 29 high 55.

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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.