________________
Here is my new weekly weather quiz question. Define the term “deliquescence.” 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.
_________________
Advisories: A FROST ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 8 AM WEDNESDAY FOR THE SOUTH CENTRAL OREGON COAST. A DENSE FOG ADVISORY IS IN EFFECT UNTIL NOON TODAY FOR THE COAST RANGE OF NORTHWESTERN OREGON AND THE CENTRAL AND SOUTHERN WILLAMETTE VALLEY. AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 PM FRIDAY FOR THE ENTIRE I-5 CORRIDOR FROM PORTLAND SOUTH THROUGH EUGENE. AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM THURSDAY FOR CENTRAL DOUGLAS COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, EASTERN CURRY COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, CENTRAL, EASTERN, AND WESTERN LAKE COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
________________
A high pressure ridge (“Arch” shape on the jet stream) is keeping us cold with some sunshine, as long as the fog clears. So, for all of the work week we’ll see at least some sunshine after the late night and early AM fog and/or freezing fog clear out. That also means that our air quality is suffering with the sinking air of high pressure holding on to the pollutants at the surface. The ridge will slide over then past us allowing more clouds and maybe a chance of precipitation returning next weekend as a cold front moves in from the northwest.
_________________
Here are your detailed forecasts.**
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy with increasing areas of fog and freezing fog early this AM, cloudy in the afternoon with some areas of lingering fog, cloudy with patchy evening fog, mostly cloudy with areas of fog late tonight and Wednesday AM, mostly cloudy in the afternoon, mostly cloudy with areas of fog again late Wednesday night and Thursday AM, partly cloudy in the afternoon and evening, then mostly cloudy with areas of fog late Thursday night highs 39-42 cooling to near 40 Thursday lows near 32. AM clouds and patchy fog then a mix of clouds and sun with patchy lingering fog Friday, mostly cloudy Friday night, a slight(20%) chance of showers Saturday through Sunday, mostly cloudy Sunday night, then a mix of clouds and sun Monday highs 42-47 cooling to 44 Monday lows 32-35 cooling to near 30 Sunday night. (seasonal averages high 47 low 35)
_______________
Forecast for the Umpqua Basin including Roseburg: Cloudy with areas of freezing fog this AM, mostly sunny this afternoon, areas of evening fog, mostly cloudy with areas of fog and freezing fog late tonight and Wednesday AM, sunny in the afternoon, mostly clear with patchy evening fog, areas of fog late Wednesday night, partly cloudy with patchy fog Thursday AM, sunny in the afternoon with patchy lingering fog, mostly clear with patchy fog and freezing fog late Thursday night highs 44-40 lows near 35. Mostly sunny with patchy fog Friday, mostly clear Friday night with patchy fog and freezing fog late, partly cloudy Saturday, mostly cloudy Saturday night, mostly cloudy with a slight (20%) chance of showers Sunday, then just partly cloudy Sunday night and Monday highs 46-49 cooling to near 44 Sunday and Monday lows 34-30. (seasonal averages high 48 low 37)
________________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Clear with areas of fog, freezing fog and frost this AM, sunny this afternoon, mostly clear with patchy fog late tonight and Wednesday AM, areas of fog and freezing fog inland, sunny in the afternoon, mostly clear with patchy evening fog, partly cloudy with areas of fog Wednesday night and Thursday AM, mostly sunny in the afternoon, then partly cloudy with patchy fog late Thursday night highs near 48 lows 32-35. Areas of patchy fog and sunny Friday, partly cloudy Friday night, mostly cloudy Saturday through Sunday, then partly cloudy Sunday night and Monday highs near 50 lows 34-38 falling to near 35 Tuesday night. (seasonal averages high 51 low 40).
_________________
Forecast for the Cascades of Lane County: Mostly sunny today, mostly clear tonight, partly cloudy Wednesday AM, mostly sunny in the afternoon, partly cloudy Wednesday night, a mix of clouds and sun Thursday AM, mostly sunny in the afternoon, then mostly clear Thursday night free air freezing level 11,000 ft. today and tonight, 10,000 ft. Wednesday, 9,000 ft. Wednesday night, then 8,000 ft. Thursday, then 9,000 ft. Thursday night highs 45-40 warming to 44 Thursday lows 27-24. Partly cloudy Friday and Friday night, a mix of clouds and sun Saturday, mostly cloudy Saturday night, a mix of clouds and sun with a slight (20%) chance of rain and snow showers Sunday, partly cloudy Sunday night, then a mix of clouds and sun Monday free air freezing level 9,000 ft. Friday and Friday night, 7,000 ft. Saturday, snow level 4,000 ft. Saturday night, 3,500 ft. Sunday, then free air freezing level 4,000 ft. Sunday night and Monday highs 42-32 warming to 39 Monday lows 26-22.
________________
**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.
________________
Get your local Eugene-Springfield news on-line at Eugene Daily News.com.
________________