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Tim Chuey Weather

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Advisories: NONE AT THIS TIME.

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An upper air trough of low pressure (“U” shape on the orange line) has increased onshore airflow bringing in more clouds and chances for rain all week long. A closed low (yellow circle) will push through the Pacific Northwest today and Friday keeping the chance of showers around. Another frontal system will approach the coast Sunday, but it looks like it could fall apart and bring a chance of showers to the higher elevations only and mostly cloudy skies with just a slight chance of showers to the valley. But, if the front has enough upper air support it could increase the chances of showers for everyone. So be prepared just in case the shower threat increases.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy with showers likely (60%) and a slight (20%) chance of thunderstorms, small hail possible, this evening, a slight (20%) chance of showers late tonight (0.20 in. of rain possible, more in storms), mostly cloudy with a slight (20%) chance of showers and thunderstorms and warmer Friday afternoon and evening, mostly cloudy  with a slight (20%) chance of showers late Friday night, AM clouds, a mix of clouds and sun with a slight (20%) chance of showers Saturday afternoon, becoming mostly cloudy Saturday night, mostly cloudy with a slight (20%) chance of rain Sunday and Sunday night lows 43-47 highs 66-62. AM clouds with a slight (20%) chance of rain, a mix of clouds and sun with a slight (20%) chance of showers Monday afternoon (Memorial Day), partly cloudy with a slight (20%) chance of showers Monday evening, partly cloudy late Monday night through Tuesday night, increasing clouds to mostly cloudy with a slight (20%) chance of showers Wednesday afternoon through Thursday highs 62-75 lows 43-50. (seasonal averages high 69 low 45)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with showers and a slight (20%) chance of thunderstorms, small hail possible, this evening with scattered showers late tonight (snow level 3,000 ft. late tonight, 0.30 in. of rain possible, more in storms), isolated showers Friday, a slight (20%) chance of evening thunderstorms,(small hail possible),  a slight (20%) chance of showers late Friday night, mostly cloudy  with a slight (20%) chance of showers Saturday, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers late Saturday night, mostly cloudy with (40%) chance of showers Sunday, then a slight (20%) chance of showers Sunday night lows 45-43 warming to near 50 Saturday night highs 56-69. Mostly cloudy with a slight (20%) chance of showers Monday (Memorial Day), partly cloudy a slight (20%) chance of showers in the evening, partly cloudy late Monday night through Tuesday AM, mostly cloudy Tuesday afternoon through Wednesday, partly cloudy Wednesday night and Thursday AM, then mostly cloudy with a slight (20%) chance of showers Thursday afternoon rain highs 70-75 lows 47-43. (seasonal averages high 72 low 49)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with showers and isolated thunderstorms, small hail and gusty winds possible this evening, isolated coastal showers and scattered inland showers tonight (0.50 in. of rain possible), mostly cloudy and warmer with a slight (20%) chance of showers Friday afternoon, mostly cloudy with a slight (20%) chance of showers Friday night, mostly cloudy with a slight (20%) chance of showers Saturday AM and a slight (20%) chance of inland showers Saturday afternoon, partly cloudy in the evening, and mostly cloudy with a slight (20%) chance of showers Saturday night, mostly cloudy with a (40%) chance of showers Sunday and Sunday night lows 46-49 highs 58-55. Mostly cloudy with a (30%) chance of showers Monday (Memorial Day), partly cloudy with a slight (20%) chance of showers Monday evening, mostly cloudy late Monday night,  mostly cloudy Tuesday and Tuesday Tuesday night, mostly cloudy Wednesday AM, partly cloudy in the afternoon and Wednesday night through Thursday AM, then mostly cloudy with a slight (20%) chance of showers Thursday afternoon highs 57-62 lows 46-50. (seasonal averages high 60 low 48).

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Forecast for the Cascades of Lane County: Mostly cloudy with rain and snow showers and a slight (20%) chance of thunderstorms, small hail possible, this evening, rain and snow showers late tonight (2 in. of snow possible, 0.25 in. of rain possible, more in storms), mostly cloudy with a (40%) chance of rain and snow showers Friday AM, a (40%) chance of showers  and a slight (20%) chance of thunderstorms in the afternoon and evening, a slight (20%) chance of showers late Friday night (under 0.10 in. of rain possible, cloudy with a slight (20%) chance of showers Saturday AM, a (40%) chance of showers with a slight chance of thunderstorms in the afternoon and evening, mostly cloudy with a slight (20%) of rain Saturday night, mostly cloudy with a slight (20%) chance of AM rain, a (40%) chance of rain Sunday afternoon, a slight (20%) chance of rain Sunday evening, then a (30%) chance of rain late Sunday night snow level 4,500 ft. tonight, 4,500 ft. rising to 6,000 ft. Friday afternoon, 6,500 ft. Friday night and Saturday, 7,000 ft. Saturday night, 6,500 ft. Sunday, then 7,000 ft. Sunday night lows 32-38 cooling to 34 Sunday night highs 53-50. AM clouds with a (30%) chance of rain Monday (Memorial Day), mostly cloudy with a slight (20%) chance of afternoon showers, partly cloudy with a slight (20%) chance of showers Monday evening, partly cloudy Tuesday through Wednesday, a mostly cloudy with a with a slight (20%) chance of rain late Wednesday night, then mostly cloudy with a slight (20%) chance of rain Thursday snow level 7,000 ft. Monday, 8,000 ft. Monday night, free air freezing level 8,000 ft. Tuesday, 10,000 ft. Tuesday night, 11,000 ft. Wednesday, snow level above 8,000 ft. Wednesday night and Thursday highs 52-70 lows 36-42.

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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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Get your local Eugene-Springfield news on-line at Eugene Daily News.com

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