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Here is my weekly weather quiz question. How do scientists forecast volcanic eruptions? 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.
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Short-lived high pressure (shaded “Arch” shaped area) gave us a pretty nice Tuesday, but cooler. A cold front moved into Oregon bringing the temperatures down and the next one (connected to it) has pushed through bringing cooler air with it. A trough of low pressure (Shaded “U” shaped area with blue arrows moving out of the Gulf of Alaska) is moving in behind the ridge sending waves of moisture at us. Another frontal system, in a series of them, will push into Oregon next week with increasing the rain chances again.
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Advisories: NONE AT THIS TIME.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: A mix of clouds and sun today, mostly cloudy and colder tonight, showers likely (60%) Thursday (0.25 in. of rain possible), cloudy with showers likely (60%) and a slight (20%) chance of thunderstorms in the evening, showers late Thursday night (0.20 in. of rain possible) and Friday AM, showers likely (60%) and a slight (20%) chance of thunderstorms in the afternoon, then mostly cloudy with a slight (20%) chance of showers Friday night highs 54-46 lows near 36. A mix of clouds and sun Saturday, partly cloudy Saturday night, mostly cloudy with a (40%) of showers Sunday (Veterans Day), rain likely (60%) Sunday night and Monday (Federal Holiday), then mostly cloudy with showers likely (60%) Monday night and Tuesday highs 48-52 lows 37-42. (seasonal averages high 55 low 39)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a slight (20%) chance of rain this AM, mostly cloudy and cooler this afternoon, mostly cloudy and colder tonight with showers and a slight (20%) chance of showers late (under 0.10 in. of rain possible), rain and snow showers with a slight (20%) chance of thunderstorms Thursday and Thursday evening (0.15 in. of rain possible, snow level 2,500 ft.), rain and snow showers late Thursday night (0.15 in. of rain possible), rain and snow showers likely (60%) Friday, then mostly cloudy with a slight (20%) chance of rain and snow showers Friday night highs 60-46 lows 40-36. Mostly cloudy Saturday and Saturday night, mostly cloudy with a (40%) chance of rain Sunday (Veterans Day), rain likely (60%) Sunday night and Monday (Federal Holiday), and Monday night, then mostly cloudy with showers likely (60%) Tuesday highs 49-55 lows 35-48. (seasonal averages high 56 low 42)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy today with a slight (20%) chance of coastal rain this AM, a slight (20%) of showers this afternoon (0.15 in. of rain possible), a slight (20%) chance of evening coastal showers with showers and a slight (20%) chance of thunderstorms inland late tonight (0.15 in. of rain possible), showers with a slight (20%) chance of coastal thunderstorms, coastal rain with a slight (20%) chance of isolated thunderstorms Thursday (0.30 in. of rain possible), showers with a slight (20%) chance of thunderstorms at the shore while evening showers and a slight (20%) chance of thunderstorms inland Thursday night and showers late at night (0.15 in. of rain possible), showers with a sight (20%) chance of thunderstorms Friday, then mostly cloudy with a (30%) chance of showers Friday night highs 56-50 lows 43-40. Mostly cloudy with a slight (20%) chance of showers Saturday, just mostly cloudy Saturday night, mostly cloudy with a good (50%) chance of rain Sunday (Veterans Day), rain likely (70%) Sunday night, mostly cloudy with rain Monday (Federal Holiday), showers Monday night, then mostly cloudy with rain likely (60%) Tuesday highs 52-56 lows 41-50. (seasonal averages high 57 low 44)
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Forecast for the Cascades of Lane County: Cloudy with a (40%) chance of isolated AM rain and snow showers, cloudy this afternoon, partly cloudy in the evening, mostly cloudy and colder tonight, a mix of clouds and sun with a (40%) chance of rain and snow showers Thursday AM, rain and snow showers Thursday afternoon (0.10 in. of rain possible, 2 in. of snow possible) , rain and snow showers in the evening, snow showers likely (60%) late Thursday night, rain and snow showers Friday, then mostly cloudy with a (30%) chance of snow showers Friday night snow level 4,500 ft. today, 5,000 ft. falling to 4,000 ft. late tonight, 3,000 ft. Thursday, 2,500 ft. Thursday night through Friday night highs 40-28 lows 25-18 warming to 22 Thursday night. A mix of clouds and sun with a slight (20%) chance of snow showers Saturday, just mostly cloudy Saturday night, mostly cloudy with a (40%) chance of snow Sunday (Veterans Day), rain and snow likely (60%) Sunday night and Monday (Federal Holiday), rain and snow showers likely (60%) Monday night and Tuesday snow level at the surface Saturday, free air freezing level at the surface Saturday night, snow level at the surface Sunday, 3,500 ft. Sunday night, 4,500 ft. Monday, then 5,000 ft. Monday night and Tuesday highs 30-40 lows 22-28.
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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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Get your local Eugene-Springfield news on-line at Eugene Daily News.com
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