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Here is my weekly weather quiz question. Please define “Syzygy.” Hint: Think of shooting a game of pool. 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.
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The high pressure (shaded “Arch” shape with blue arrows) is opening up allowing storms to return to the Pacific Northwest. Watch out for slippery roadways early this AM due to fog freezing on the surface of the road through today. A frontal system is headed our way to return the chance of rain to Oregon. The first part of a frontal system will be moving into the Pacific Northwest late Thursday into Friday bringing rain with it by late at night. The second part , a cold frontal system, will approach the Pacific Northwest over the weekend.
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Advisories: AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 6 PM TODAY FOR THE NORTH, CENTRAL AND SOUTH WILLAMETTE VALLEY. A DENSE FOG ADVISORY IS IN EFFECT BELOW 500 FEET UNTIL NOON TODAY FOR THE NORTH, CENTRAL AND SOUTH WILLAMETTE VALLEY. A FREEZE WARNING IS IN EFFECT UNTIL 9 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST. A FROST ADVISORY IS IN EFFECT UNTIL 9 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST. AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 PM TODAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE KLAMATH BASIN, JACKSON COUNTY, NORTHERN AND EASTERN KLAMATH COUNTY, 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: Cloudy with areas of dense fog and freezing fog again this AM, cloudy with patchy lingering fog and freezing fog this afternoon particularly in the hills, mostly cloudy with rain likely (60%) and a slight (20%) chance of freezing rain late tonight (0.10 in. of rain possible), areas of AM fog and freezing rain, rain Wednesday afternoon (0.25 in. of rain possible), a (40%) chance of showers Wednesday night (under 0.10 in. of rain possible), just mostly cloudy Thursday, mostly cloudy with a good (50%) chance of rain Thursday night lows 29-36 highs 33-45. Mostly cloudy with a good (50%) chance of rain Friday, mostly cloudy with a good (50%) chance of rain Friday night, rain likely (60%) Saturday and Saturday night, then mostly cloudy with a good (50%) chance of rain Sunday through Monday highs 47-49 cooling to 44 Sunday and Monday lows 37-33. (seasonal averages high 48 low 35)
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Forecast for the Umpqua Basin including Roseburg: Partly cloudy with patchy fog and freezing fog again this AM, sunny in the afternoon, cloudy with patchy fog and a slight (20%) chance of evening rain, a good (50%) of rain late tonight (under 0.10 in. of rain possible), rain and snow Wednesday AM (snow level 3,000 ft.), rain in the afternoon (0.15 in. of rain possible), a slight (20%) chance of rain and snow showers late Wednesday in the evening, (snow level 3,000 ft. in the evening), mostly cloudy with a slight (20%) chance of rain Thursday afternoon and Thursday night lows 28-38 highs 50-47. Mostly cloudy with a slight (20%) chance of rain Friday, a good (50%) chance of rain at night, rain likely (70%) Saturday, showers likely (70%) Saturday night, rain and snow showers likely (60%) Sunday, a (40%) chance of rain or snow Sunday night, then mostly cloudy with a (40%) chance of rain and snow showers Monday highs 52-47 lows 35-38. (seasonal averages high 50 low 37)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy fog this AM, mostly cloudy in the afternoon, cloudy with a slight (20%) chance of evening rain, rain likely (60%) tonight (0.20 in. of rain possible), rain Wednesday (0.20 in. of rain possible), mostly cloudy with a slight (20%) chance of showers Wednesday night, mostly cloudy with a slight (20%) chance of rain Thursday afternoon, then mostly cloudy with a slight (20%) chance of rain Thursday night highs 53-49 warming to 55 Thursday lows 32-43 cooling to 38 Wednesday night. Mostly cloudy with a (30%) chance of rain Friday and Friday night, rain likely (70%) Saturday, showers likely (70%) Saturday night and Sunday, then mostly cloudy with a good (50%) chance of showers Sunday night and Monday highs 54-48 lows 42-37. (seasonal averages high 52 low 40)
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Forecast for the Cascades of Lane County: Mostly sunny in the AM, partly cloudy this afternoon, cloudy with (40%) chance of rain and colder late tonight (0.10 in. of rain possible), rain or snow and colder Wednesday (0.10 in. of rain possible, 1-3 in. of snow possible), mostly cloudy with a (40%) chance of snow showers Wednesday night, a mix of clouds and sun Thursday, then mostly cloudy with a good (50%) chance of rain or snow Thursday night free air freezing level 11,000 ft. today, snow level 7,000 ft. falling to 6,000 ft. tonight, 3,500 ft. Wednesday, 2,500 ft. Wednesday night, then 4,500 ft. Thursday and Thursday night lows 24-22 highs 45-34 warming to near 39 Thursday. Mostly cloudy with a good (50%) chance of rain Friday and night, a good (50%) chance of rain and snow Saturday, rain and snow likely (60%) at night, then mostly cloudy with a good (50%) chance of rain and snow Sunday through Monday snow level 6,000 ft. Friday, 6,500 ft. Friday night, 4,500 ft. Saturday, 3,500 ft. Saturday night, then 3,000 Sunday through Monday highs 40-25 warming to near 30 Monday lows 26-22.
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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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