A warm front pushed warmer  air through Oregon that is moving in on the “Pineapple Express” (warm moist air from Hawaii). Weak high pressure builds Tuesday then weakens  allowing another weak front to try to move in Tuesday night and Wednesday. The ridge gets a little stronger Thursday then allows yet another storm to move in late in the week (Friday) bringing back a better chance of rain.

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Advisories: None at this time.

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Forecast for the Central and Southern Willamette Valley:  Mostly cloudy with showers likely (60%) tonight and Tuesday low in the low 40s high in the low 50s. Tuesday night mostly cloudy  with a (50%) chance of rain  low 42. Mostly cloudy with rain likely (60%) Wednesday then partly cloudy at night high near 50 low a cooler 35. A mix of clouds and sun Thursday partly cloudy Thursday night high near 50 low in the mid 30s. Mostly cloudy with rain likely (60%) Friday and a (50%) chance Friday night high 50 low 40. Saturday and  Saturday night  mostly cloudy with a (40%) chance rain of high near 50 low down to the low 30s. Just a slight (20%) chance of rain Sunday high 50. A (30%-40%) chance of rain Sunday night and Monday low 37 high 50.

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Forecast for the Umpqua Basin including Roseburg:  Showers likely (60%) tonight with patchy fog late low 40. AM fog and rain likely (60%) then mostly cloudy Tuesday with a good (50%) chance of rain high 52. A good (50%) chance of rain at night with patchy fog late low near 40. Mostly cloudy with morning fog Wednesday with rain likely (60%) high 50. Mostly cloudy Wednesday night with a slight (20%) chance of rain, fog late low 42. Early morning and late night fog Thursday and Thursday night otherwise mostly cloudy a (30%) chance of rain at night high near 50 low near 40. AM fog with a (40%) chance of rain Friday high near 48. Mostly cloudy with a good (50%) chance of rain Friday night low 40. Rain likely (60%) Saturday with a slight (20%) chance of rain at night  high near 50 low in the upper 30s. Mostly cloudy with patchy  early morning fog Sunday with a (30%) chance of rain high near 50. Partly cloudy Sunday night with a good (50%) chance rain low 38. AM fog mostly cloudy Monday with  rain likely (60% high 50.

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Forecast for the South Oregon Coast: Mostly cloudy showers likely (60%) tonight with fog late inland low 46.  Rain likely (60%) Tuesday morning fog inland  high in the mid 50s. Rain likely (60%) Tuesday night, patchy fog inland low in the upper 40s. Patchy AM fog inland, mostly cloudy with rain likely (60%) Wednesday high near 58. Mostly cloudy with areas of late night  fog Wednesday night with a (30%) chance of rain low in the low 40s. Mostly cloudy after AM fog Thursday with a (30%) chance of rain late at night high 54 low 44. Mostly cloudy with a  (20%) chance of rain Friday and Friday night high low. Rain likely (60%) Saturday with a (30%) chance of rain at night high 53 low 40. Mostly cloudy with rain likely (60%)  Sunday, partly cloudy at night a () chance of rain. A good (50%) chance of rain Monday high 56.

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Forecast for the Cascades of Lane County: Evening showers, then likely (60%) overnight, snow level 6,500′. Occasional rain Tuesday with a good (50%) chance of rain at night snow level 6,000′. Rain and snow likely (60%) Wednesday snow level 6,000′ . Partly cloudy Wednesday night with a slight (20%) chance of showers snow level falling to 4,500′. A mix of clouds and sun Thursday free air freezing level holding at 5,500. Partly cloudy Thursday night free air freezing level 5,500′. Rain likely Friday snow level 6,500′. Rain and snow likely (60%) Friday night snow level 4,500′ Mostly cloudy with a good (50%) chance of rain Saturday and a slight (20%) chance of rain and snow Saturday night snow level 5,000′. Mostly cloudy Sunday with a (40%) chance of snow and a slight (20%) chance of rain  snow level 4,500′. A (30%) chance of rain and snow Sunday night snow level  5,000′.  Mostly cloudy Monday with a (40%) chance of rain snow level rising to 6,000′.

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Here again is my weather quiz question for this week. How much water is in the oceans of the  Earth? Your answer should be in gallons. Please place your answer as a comment to this post. 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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