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Here is my new weekly weather quiz question. In times of active weather the “Mesonet” comes in handy. What is it? Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.
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High pressure ridge centerer offshore.
The leading edge of an upper level high (Shaded “Arch” shape) is sending colder air down from Canada which is driving snow levels down. A frontal system pushes through Oregon. Another frontal system will slide toward us (position shown is Monday) increasing the rain chances. See the pattern here of frontal systems (this one shown on Wednesday) that will march through the Pacific Northwest.
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Advisories: A WINTER WEATHER ADVISORY IS IN EFFECT FROM UNTIL 1 PM SATURDAY ABOVE 1,000 FT. FOR THE COAST RANGE OF NORTHWEST OREGON AND THE CENTRAL COAST RANGE OF OREGON. A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM SATURDAY FOR THE NORTH OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, THE NORTH OREGON CASCADES, AND THE CASCADES OF LANE COUNTY. A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM SATURDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTH OREGON CASCADES, AND THE SISKIYOU MOUNTAINS. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM SATURDAY ABOVE 2,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH OREGON CASCADES AND THE SISKIYOU MOUNTAINS. A WIND ADVISORY IS IN EFFECT UNTIL 4 AM SATURDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, WESTERN, CENTRAL AND EASTERN LAKE COUNTY. A HIGH SURF ADVISORY IS IN EFFECT FROM 10 PM TONIGHT UNTIL 6 PM SATURDAY FOR THE NORTH AND CENTRAL OREGON COAST. A HIGH SURF ADVISORY IS IN EFFECT FROM 7 PM THIS EVENING UNTIL 10 PM SATURDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE SOUTH OREGON COAST.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with showers likely (60%) and small hail possible this evening, showers late tonight (0.25 in. of rain possible), mostly cloudy with showers Saturday (0.10 in. of rain possible, snow level 1,000 ft.), a slight (20%) chance of showers Saturday night (under 0.10 in. of rain possible), just mostly cloudy Sunday, cloudy with a (40%) chance of evening rain, rain late Sunday night (0.10 in. of rain possible) and Monday AM, showers in the afternoon, a good (50%) chance of showers Monday night lows 36-32 warming to 38 Monday night highs 47-50 cooling to 47 Monday. Cloudy with a (40%) chance of rain Tuesday, mostly cloudy with a good (50%) chance of rain Tuesday night through Wednesday night, a (40%) chance of rain Thursday and Thursday night, then a mix of clouds and sun with a slight (20%) chance of rain Friday highs 48-56 lows 36-40 cooling to 38 Thursday night. (seasonal averages high 52 low 35)
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with showers this evening, rain and snow showers late tonight (0.45 in. of rain possible, 1 in. of snow possible, snow level 2,000 ft. late tonight), rain and snow showers Saturday AM, rain and snow showers likely (70%) in the afternoon (0.10 in. of rain possible, 1 in. of snow possible,snow level 1,500 ft.), a good (50%) chance of rain and snow showers in the evening (snow level 2,000 ft.), mostly cloudy Saturday night and Sunday, a slight (20%) chance of evening showers, rain likely (70%) Sunday night, AM rain Monday, rain and snow showers likely (70%) Monday afternoon, a (40%) chance of rain and snow showers Monday night lows 37-32 warming to 37 Sunday night and cooling to 34 Monday night highs 46-53 cooling to 50 Sunday. Mostly cloudy with a slight (20%) chance of showers Tuesday, rain likely (60%) Tuesday night, a good (50%) chance of AM showers, a good (50%) chance of showers Wednesday afternoon, a (40%) chance of rain at night, cloudy with a good (50%) chance of rain Thursday, mostly cloudy with a (40%) chance of rain in the evening, cloudy with a good (50%) chance of showers Thursday night, then partly cloudy Friday highs 53-59 lows 40-36. (seasonal averages high 55 low 38)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with showers and a slight (20%) chance of isolated thunderstorms this evening, showers late tonight (0.50 in. of rain possible, snow level 2,000 ft.), coastal showers Saturday AM while AM rain and snow showers inland and showers likely (60%) in the afternoon (0.15 in. of rain possible, snow level 1,500 ft. rising to 2,000 ft. in the afternoon), a slight (20%) chance of showers Saturday evening, mostly cloudy at night and Sunday, cloudy with a (40%) chance of evening rain, rain late at night (under 0.10 in. of rain possible, snow level 2,000 ft. late) and Monday AM, showers likely (70%) Monday afternoon, a (40%) chance of showers Monday night lows 40-37 warming to 42 Sunday night and cooling to 35 Monday night. Mostly cloudy with a (40%) chance of showers Tuesday, rain likely (70%) Tuesday night, cloudy with a (3%) chance of AM rain, a (40%) chance of showers Wednesday afternoon, cloudy with a good (50%) chance of evening showers, a good (50%) chance of rain late Wednesday night, cloudy with a good (50%) chance of rain Thursday, a (40%) chance of showers late at night, then mostly cloudy with a slight (20%) chance of showers Friday highs 50-55 lows 43-40. (seasonal averages high 53 low 40)
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Forecast for the Cascades of Lane County: Mostly cloudy with evening showers, snow showers late tonight (0.75 in. of rain possible, 6-12 in. of snow possible), snow showers and colder Saturday (3-6 in. of snow possible), a good (50%) chance of snow showers Saturday night, just mostly cloudy Sunday and a bit warmer, a slight (20%) chance of rain and snow in the evening, rain and snow late Sunday night, mostly cloudy with AM rain and snow, rain and snow showers Monday afternoon, then mostly cloudy with snow showers likely (60%) Monday night snow level 3,500 ft. this evening, at the surface late tonight through Saturday night, free air freezing level at the surface Sunday, snow level 3,000 ft. Sunday night and Monday, then at the surface Monday night lows 22-18 warming to 25 Sunday night cooling to near 20 Monday night highs 27-37 cooling to 34 Monday. Mostly cloudy with a (30%) chance of snow Tuesday, rain and snow likely (60%) at night, mostly cloudy with a good (50%) chance of rain and snow Tuesday night through Wednesday night, a (40%) chance of rain and snow Thursday, a (40%) chance of rain Thursday night, then a mix of clouds and sun with a slight (20%) chance of rain Friday snow level at the surface Tuesday, 3,500 ft. Tuesday night and Wednesday, 4,500 ft. Wednesday night and Thursday, 7,000 ft. Thursday night, then 8,000 ft. Friday highs 36-33 warming to 47 Friday lows 26-29.
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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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