_______________
Here is my weekly weather quiz question. In meteorology what does the term “diamond dust” refer to? 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: NONE AT THIS TIME.
________________
An upper level trough of low pressure (“U” shape on orange line) off Vancouver will swing through today with more clouds. A short lived high pressure ridge (“Arch” shape on orange line) will follow and warm us up a bit. A weak frontal system will move in with no serious effect Friday. The Perseid meteor shower peaks Thursday through Saturday, but the nearly full moon will probably spoil the show. Another frontal system will approach the coast Sunday and move in Monday bringing the chance of showers to the coast and Southern areas of Oregon.
________________
Here are your detailed forecasts.**
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly clear tonight, mostly sunny Thursday, clear Thursday night, mostly sunny Friday, clear in the evening, partly cloudy Friday night and Saturday AM, a mix of clouds and sun Sunday, partly cloudy Sunday evening, then mostly cloudy Sunday night lows 47-52 highs 83-80. A mix of clouds and sun Monday, partly cloudy Monday evening, mostly cloudy Monday night and Tuesday AM, partly cloudy Tuesday afternoon and evening, mostly cloudy Tuesday night, then a mix of clouds and sun Wednesday highs 75-78 lows near 53. (seasonal averages high 84 low 52)
_______________
Forecast for the Umpqua Basin including Roseburg: Clear tonight, sunny Thursday, clear in the evening, partly cloudy late Thursday night and Friday, mostly clear Friday evening, mostly cloudy with patchy late night and early AM fog, mostly sunny Saturday afternoon, then partly cloudy Saturday night through Sunday night lows near 55 highs 80-85. Mostly cloudy with a slight (20%) chance of showers Monday through Tuesday AM, partly cloudy Tuesday afternoon and evening, mostly cloudy late Tuesday night and Wednesday AM, then just partly cloudy Wednesday afternoon highs 84-80 lows near 55. (seasonal averages high 86 low 56)
________________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly clear this evening, then partly cloudy with patchy fog late at night, mostly cloudy with early AM fog, mostly sunny Thursday afternoon, mostly clear in the evening, mostly cloudy with patchy fog late night and early AM fog with mostly sunny afternoons Friday and Saturday lows near 54 highs 67-64. Mostly cloudy Sunday AM, partly cloudy in the afternoon and evening, mostly cloudy with a slight (20%) chance of rain late Sunday night, mostly cloudy with a slight (20%) chance of showers Monday through Tuesday, then just mostly cloudy Tuesday night and Wedneday highs 65-69 lows near 53. (seasonal averages high 65 low 53).
_________________
Forecast for the Cascades of Lane County: Mostly clear tonight, mostly sunny Thursday and Friday, with mostly clear nights, mostly sunny Saturday and Sunday, mostly clear Saturday night and partly cloudy Sunday night free air freezing level 13,000 ft. tonight and Thursday, 14,000 ft. Thursday night and Friday, then 15,000 ft. Friday night, 14,000 ft. Saturday and Saturday night, 13,000 ft. Sunday, then 12,000 ft. Sunday night lows 42-45 highs 74-68. Partly cloudy with a slight (20%) chance of showers Monday and Monday night, then just partly cloudy Tuesday through Wednesday snow level above 8,000 ft. Monday and Monday night, free air freezing level 12,000 ft. Tuesday, 13,000 ft. Tuesday night, then 12,000 ft. Wednesday highs 63-67 lows near 44.
________________
**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 EugeneDailyNews.com.
________________