________________
Here is my weekly weather quiz question. What does the following description actually describe? “Very energetic electromagnetic radiation with wavelengths intermediate between 0.01 and 10 nanometers (0.1-100 Angstroms) or between gamma rays and ultraviolet radiation. Essentially all of them from space are absorbed in the Earth’s upper atmosphere.” 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 high pressure ridge (the shaded “Arch” shape) has weakened allowing a frontal system to move through returning the rain chances. Low pressure (shaded “U” shape) in the Gulf of Alaska takes over sending another storm our way. Surface high pressure (Blue “H” offshore) will give us a bright and dry weekend, the first part anyway.
________________
Advisories: A HIGH SURF ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR THE NORTH, CENTRAL, SOUTH CENTRAL, AND SOUTH OREGON COAST.
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy with a good (50%) chance of rain today with possible short sun breaks (under 0.10 in. of rain possible), rain tonight (0.25 in. of rain possible), AM rain, showers likely (60%) Thursday afternoon (0.15 in. of rain possible), showers likely (60%) in the evening, mostly cloudy with a good (50%) chance of showers late Thursday night (under 0.10 in. of rain possible), cloudy with patchy AM fog, a mix of clouds and sun Friday afternoon, then partly cloudy with patchy fog late Friday night highs 49-42 lows 38-30. AM fog, partly cloudy Saturday, mostly cloudy with patchy fog Saturday night, a mix of clouds and sun Sunday, then partly cloudy Sunday night through Tuesday highs 44-46 lows near 32. (seasonal averages high 50 low 35)
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a slight (20%) chance of AM showers, a slight (20%) chance of rain this afternoon (under 0.10 in. of rain possible), cloudy with a (40%) chance of rain in the evening, rain late tonight (0.15 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft.), rain and snow showers Thursday (0.10 in. of rain possible, snow level 2,500 ft. falling to 2,000 ft.), evening rain and snow showers, a good (50%) chance of rain and snow showers late Thursday night (under 0.10 in. of rain possible, snow level 3,000 ft. falling to 2,000 ft.), mostly cloudy Friday AM, partly cloudy in the afternoon, mostly clear in the evening, then partly cloudy with patchy fog late Friday night highs 52-45 lows 39-32. Areas of AM fog, partly cloudy with areas of fog in the afternoon and back to patchy fog late at night Saturday through Tuesday highs 47-53 lows near 33. (seasonal averages high 52 low 37)
_________________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a slight (20%) chance of AM showers, a slight (20%) chance of rain this afternoon (under 0.10 in. of rain possible), rain tonight (0.50 in. of rain possible) and windy (wind: S 10-20 mph increasing to SW 20-30 mph), showers and a slight (20%) chance of thunderstorms Thursday (0.35 in. of rain possible, snow level 2,000 ft.), showers and a slight (20%) chance of thunderstorms in the evening, a good (50%) chance of showers late Thursday night (0.15 in. of rain possible, snow level 2,000 ft. late), mostly cloudy Friday AM, partly cloudy in the afternoon, then partly cloudy Friday night highs 50-46 lows 43-34. Partly cloudy Saturday through Tuesday highs 49-52 lows 42-38. (seasonal averages high 52 low 40)
_______________
Forecast for the Cascades of Lane County: A mix of clouds and sun with a (30%) chance of rain and snow showers this AM, a slight (20%) chance of rain and snow this afternoon (under 0.10 in. of rain possible), cloudy with a (40%) chance of evening rain and snow, rain and snow late tonight (0.50 in. of rain possible, 1-3 in. of snow possible), AM rain and snow showers, afternoon snow showers likely (60%) Thursday, evening snow showers, a good (50%) chance of showers late Thursday night, a mix of clouds and sun Friday, then partly cloudy Friday night snow level 3,000 ft. today, 3,500 ft. tonight, at the surface Thursday and Thursday night, then free air freezing level Friday and 3,500 ft. Friday night highs 36-29 lows 26-18. Partly cloudy Saturday through Sunday night, then mostly sunny Monday and Tuesday with partly cloudy skies Monday night snow level at the surface Friday, free air freezing level at the surface Saturday, 4,500 ft. Saturday night, 5,500 ft. Sunday, 7,500 ft. Sunday night, 7,000 ft. Monday and Monday night, then 6,000 ft. Tuesday highs 35-42 lows 22-26.
________________
**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.
________________