________________
Here is my new 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) is flattening (weakening) allowing a frontal system, at least the cold front, to move in today bringing back the rain chances tonight. That’s when low pressure (shaded “U” shape) in the Gulf of Alaska takes over sending storms our way. Another frontal system will approach the Pacific Northwest on Wednesday continuing our rain chances.
________________
Advisories: AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 9 AM TUESDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY, THE KLAMATH BASIN, NORTHERN, EASTERN AND WESTERN KLAMATH COUNTY, AND CENTRAL AND EASTERN LAKE COUNTY.
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with areas of fog this AM and patches of sun, mostly cloudy this afternoon, mostly cloudy with a slight (20%) chance of rain late tonight (under 0.10 in. of rain possible), rain Tuesday AM, showers likely (60%) in the afternoon (0.10 in. of rain possible)and Tuesday night, a (40%) chance of AM showers, a good (50%) chance of rain Wednesday afternoon (under 0.10 in. of rain possible), then rain likely (70%) Wednesday night (under 0.10 in. of rain possible) highs near 50 lows near 37. Mostly cloudy with rain Thursday, showers likely (60%) Thursday night, a mix of clouds and sun with a slight (20%) chance of showers Friday, partly cloudy Friday night and Saturday, then mostly cloudy Saturday night and Sunday highs 44-48 lows 34-32. (seasonal averages high 50 low 35)
Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with patchy fog this AM, mostly cloudy this afternoon, patchy fog with a slight (20%) chance of rain late tonight, AM rain, showers Tuesday afternoon (0.10 in. of rain possible, snow level 3,500 ft.), mostly cloudy with a (30%) chance of showers Tuesday night (under o.10 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft.), a slight (20%) chance of AM rain and snow showers, a slight (20%) chance of rain Wednesday afternoon (snow level 2,500 ft.), cloudy with a (40%) chance of rain in the evening, then rain likely (60%) late Wednesday night highs 56-52 lows 39-35. Mostly cloudy with rain and snow Thursday, rain and snow showers Thursday night, mostly cloudy with a (40%) chance of rain and snow showers Friday, a slight (20%) chance of rain and snow showers Friday night, partly cloudy with a slight (20%) chance of showers Saturday, just mostly cloudy Saturday night, then partly cloudy Sunday highs near 48 lows 34-32. (seasonal averages high 52 low 37)
_________________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with areas of coastal fog this AM, mostly cloudy this afternoon, a slight (20%) chance of rain late tonight (under 0.10 in. of rain possible), mostly cloudy with AM rain Tuesday (0.20 in. of rain possible), showers in the afternoon (under 0.10 in. of rain possible), coastal evening showers with showers likely (60%) late while evening showers likely (60%) inland and a good (50%) chance of showers late Tuesday night (under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of AM showers, a (40%) chance of rain Wednesday afternoon and evening, then rain late Wednesday night highs 54-50 lows near 40. Mostly cloudy with rain Thursday, showers likely (70%) Thursday night, a (40%) chance of showers Friday, a slight (20%) chance of showers Friday night, partly cloudy with a slight (20%) chance of showers Saturday, then partly cloudy Saturday night and Sunday highs 46-50 lows 42-34. (seasonal averages high 52 low 40)
_______________
Forecast for the Cascades of Lane County: Partly cloudy today, mostly cloudy with a slight (20%) chance of rain late tonight, rain and snow likely (60%) Tuesday AM, rain and snow showers in the afternoon, rain and snow Tuesday AM, rain and snow showers in the afternoon (0.25 in. of rain possible, 1-4 in. of snow possible), rain or snow Tuesday night, a good (50%) chance of AM rain and snow showers, a slight (20%) chance of rain and snow in the afternoon, then rain and snow likely (60%) Wednesday night free air freezing level 6,500 ft. rising to 7,500 ft. today, snow level 5,500 ft. tonight, 5,000 fgt. falling to 3,500 ft. Tuesday and Tuesday night, 3,000 ft. Wednesday, then 4,000 ft. Wednesday night highs 44-35 lows 28-22. Mostly cloudy with rain and snow Thursday, rain and snow showers Thursday night, a mix of clouds and sun with a (30%) chance of snow showers Friday, then partly cloudy Friday night through Sunday snow level 2,500 ft. Thursday, 3,000 ft. Thursday night, at the surface Friday, free air freezing level at the surface Friday night and Saturday, then 5,000 ft. Saturday night and Sunday highs 32-37 lows 21-24.
________________
**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.
________________