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Here is my new weekly weather quiz question. What does “ECMWF” stand for? Hint: it represents a very necessary weapon in the meteorologist’s weather forecasting arsenal. 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.
An upper level trough of low pressure (Shaded “U” shape) is moving eastward away from the Pacific Northwest taking storms away. High pressure (shaded “Arch”shape) has brought sunshine to Oregon, but another upper level low that’s next in line will bring back the chance of rain for a while. A complex frontal system will return the stream of moisture pouring into Oregon and dropping snow levels below the passes by midweek (frontal position shown is Thursday after passage) bringing the “Spring Rain.” Spring officially begins with the “Vernal Equinox ” at 4:02 AM this Wednesday March 20th.
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Advisories: A HIGH WIND WATCH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A HIGH WIND WATCH IS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY EVENING FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY. A WIND ADVISORY IS IN EFFECT FROM 5 PM TUESDAY EVENING UNTIL 5 AM WEDNESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Partly cloudy with patchy fog late tonight, a mix of clouds and sun with patchy AM fog, mostly cloudy with rain in the afternoon (0.15 in. of rain possible), rain Tuesday night (0.55 in. of rain possible) and breezy (wind: S 10-15 mph gusts to 30 mph increasing to S 15-25 mph gusts to 40 mph late), mostly cloudy with AM rain, showers Wednesday afternoon (0.55 in. of rain possible), showers likely (70%) Wednesday night (0.10 in. of rain possible) and colder, a mix of clouds and sun with a good (50%) chance of showers Thursday, then partly cloudy with a slight (20%) chance of showers at night lows 37-47 cooling to 34 Thursday night highs 58-50. A mix of clouds and sun with a slight (20%) chance of showers Friday, a slight (20%) chance of showers Friday night, a slight (20%) of rain Saturday and Saturday night, a mix of clouds and sun with a (30%) chance of showers Sunday, mostly cloudy with a slight (20%) chance of showers at night, then a mix of clouds and sun Monday highs 55-60 lows 37-40. (seasonal averages high 57 low 37)
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy tonight, cloudy with a (40%) chance of rain Tuesday AM, rain likely (60%) in the afternoon (under 0.10 in. of rain possible), rain Tuesday night (0.25 in. of rain possible), AM rain, mostly cloudy with showers Wednesday afternoon (0.25 in. of rain possible, snow level 3,000 ft.), evening rain and snow showers, rain and snow showers likely (70%) and colder late Wednesday night (0.10 in. of rain possible, snow level 2,500 ft. falling to 2,000 ft. late), mostly cloudy with a (30%) chance of showers Thursday, then partly cloudy with a slight (20%) chance of rain and snow showers Thursday night lows 40-4 cooling to 34 Thursday night highs 60-50. Partly cloudy Friday, mostly cloudy with a slight (20%) chance of showers Friday night, a slight (20%) chance of rain Saturday and Saturday night, a slight (20%) chance of showers Sunday and Sunday night, then just mostly cloudy Monday highs 52-66 lows 34-42. (seasonal averages high 58 low 40)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy tonight, mostly cloudy with rain likely (60%) Tuesday AM, rain in afternoon (0.15 in. of rain possible), rain (0.55 in. of rain possible) Tuesday night and windy (wind: S 20-30 mph), AM rain, showers Wednesday afternoon (0.55 in. of rain possible) and breezy (wind: W 15-25 mph), coastal evening showers likely (70%) while evening showers inland and showers late Wednesday night (0.10 in. of rain possible, snow level 2,000 ft.), mostly cloudy with a (40%) chance of showers Thursday, then partly cloudy with a slight (20%) chance of showers Thursday night lows 42-47 cooling to 36 Thursday night highs 53-48. Just partly cloudy Friday, mostly cloudy with a slight (20%) chance of showers at night, mostly cloudy with a (30%) chance of rain Saturday and Saturday night, a slight (20%) chance of showers Sunday and Sunday night, then just mostly cloudy Monday highs near 53 lows 39-42. (seasonal averages high 54 low 42)
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Forecast for the Cascades of Lane County: Partly cloudy tonight, a mix of clouds and sun with a (40%) chance of AM rain and snow, rain Tuesday afternoon (0.10 in. of rain possible), rain late Tuesday night (0.50 in.of rain possible) and windy (wind: SW 10-20 mph gusts to 35 mph increasing to SW 20-30 mph gusts to 45 mph late), AM rain and snow, rain and snow showers Wednesday afternoon and windy (wind: SW 20-30 mph), snow showers Wednesday night breezy (SW 15-25 mph shifting to W 10-15 mph late at night) and colder, mostly cloudy with a good (50%) chance of snow showers Thursday, then partly cloudy with a slight (20%) chance of rain and snow showers Thursday night free air freezing level 6,500 ft. falling to 6,000 ft. late tonight, snow level 5,000 ft. rising to 6,000 ft. Tuesday, 6,000 ft. Tuesday night, 5,500 ft. falling to 4,000 ft. Wednesday, 2,500 ft. Wednesday evening, at the surface Thursday, then 2,500 ft. Thursday night lows 29-34 cooling to 20 Thursday night highs 47-36. A mix of clouds and sun Friday, mostly cloudy with a (30%) chance of rain and snow showers Friday night, mostly cloudy with a (30%) chance of rain and snow Saturday and Saturday night, a mix of clouds and sun with a slight (20%) chance of rain and snow showers Sunday, partly cloudy with a slight (20%) chance of rain and snow showers at night, then a mix of clouds and sun Monday free air freezing level 4,000 ft. Friday, 4,500 ft. Friday night and Saturday, 5,000 ft. Saturday night and Sunday highs 40-47 lows 26-30.
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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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