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A Reminder: The  moon was officially full a 11:10 AM today (the Full Worm Moon). The moon looks larger than ever because it is closer to Earth (a distance of 221,565 miles (356,575 kilometers) away) than that it has been in more than 18 years, the biggest full moon of 2011 occurred this AM, leading some observers to dub it a “supermoon.”

theVernal Equinox occurs at 4:21 PM Pacific Daylight Time tomorrow March 20th.

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The jet stream shows a trough of low pressure ( “U” shaped area) swinging in toward the Pacific Northwest. The low pressure offshore along with a surface frontal system that will march through Oregon will keep us wet, at least off and on. Additional storms will be aiming for us like this frontal system that will roll in early in the week to our South (position shown is Tuesday).

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Advisories:  A WINTER WEATHER ADVISORY IS IN EFFECT FROM 2 AM UNTIL 10 AM SUNDAY FOR THE ILLINOIS VALLEY IN EASTERN CURRY COUNTY AND JOSEPHINE COUNTY.

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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 good (50%) chance of showers with a slight (20%) chance of thunderstorms, possible small hail, this evening (0.10 in. of rain possible), a (40%) chance of showers late tonight (0.10 in. of rain possible), mostly cloudy with a good (50%) chance of showers Sunday, showers likely (60%) Sunday night, cloudy with a (40%) chance of showers Monday AM,  showers likely (60%) Monday afternoon, mostly cloudy with a  good (50%) chance of showers Monday night through Tuesday night lows 35-40 highs 50-54. Mostly cloudy with a good (50%) chance of showers Wednesday through Sunday highs 55-50  lows 43-36. (seasonal  averages high 57 low 37)

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Forecast for the Umpqua Basin including, Roseburg:  Mostly cloudy with showers this evening, rain likely (60%) late tonight (snow level 2,500 ft. rising to 3,000 ft. late tonight), a good (50%) chance of AM rain Sunday, rain likely (60%) Sunday afternoon (snow level 2,500 ft.), showers likely (60%) Sunday night (snow level 3,500 ft. falling to 3,000 ft.late), cloudy with a good (50%) chance of showers Monday AM, showers likely (60%) in the afternoon (snow level 3,000 ft.), then mostly cloudy with a good (50%) chance of showers Monday night (snow level 2,500 ft. rising to 3,000 ft. late) lows 37-40 highs 54-50. Mostly cloudy with a good (50%) chance of showers Tuesday through Wednesday,  showers Wednesday night through Friday night, and cloudy with a good (50%) chance of showers Saturday  highs 52-56 lows near 40. (seasonal averages high 60 low 39)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with showers this evening, a good (50%) chance of rain tonight, rain likely (60%) Sunday, showers likely (60%) Sunday night, coastal showers likely (60%) Monday AM, inland AM showers likely(60%), then showers Monday afternoon, and a good (50%) chance of showers Monday night lows 39-42 highs 50-48.  Mostly cloudy with a good (50%) chance of showers Tuesday through Wednesday, showers Wednesday night and Thursday, showers likely (60%) Thursday night through Friday night, then a good (50%) chance of showers Saturday highs 55-52 lows 42-40. (seasonal averages high 56 low 42).

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Forecast for the Cascades of Lane County:  Mostly cloudy with showers likely (60%) this evening mainly South of Mt. Jefferson) with a good (50%) chance of showers late tonight, a good (50%) chance of showers to the North this evening, mostly cloudy with a good (50%) chance AM rain and snow showers Sunday, rain and snow showers likely (60%) Sunday afternoon (1 in. of snow possible) and Sunday night (2 in. of snow possible),  rain and snow showers likely (60%) Monday (1 in. of snow possible), then a good (50%) chance of rain and snow showers Monday night snow level 3,500 ft. falling to 2,500 ft. tonight, 2,500 ft. rising to 4,000 ft. Sunday afternoon, and 5,000 ft. falling to 3,500 ft. Sunday night, and 3,000 ft. Monday and Monday night lows 24-30 highs 42-35. Mostly cloudy with a good (50%) chance of snow showers Tuesday, then a good (50%) chance of rain and snow showers Tuesday night through Friday, rain and snow showers likely (60%) Friday night, then mostly cloudy with a good (50%) chance of rain and snow showers Saturday snow level 2,500 ft. Tuesday, 3,500 ft. Tuesday night, then 4,500 ft. Wednesday through Thursday night, 3,000 ft. Friday, 4,500 ft. Friday night, and 3,000 ft. Saturday highs 35-40 Thursday lows 27-32.

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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.