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We have a winner. That was fast.
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Wow! we have a winner already for this week’s weather quiz question. Congratulations to Nicole who was the first person to post the correct answer. Here is the question again. How do hot temperatures effect a typical 727 airliner’s takeoff distance? Here is Nicole’s answer: “Warmer air is less dense than colder air (less molecules) which requires an airplane to have more runway space in which to take off from. The airplane won’t climb as fast or efficiently in warmer conditions and will have a faster approach at landing as well”. The heat makes the air thinner, which reduces the amount of lifting force an aircraft’s wings produce. It then takes a longer distance to get going fast to increase the lift enough for the plane to take off. I’ll have a new weather quiz question for you next week. 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.
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Advisories: NONE AT THIS TIME.
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We have been under a blocking high pressure ridge (“Arch” shape covering the Pacific Northwest) that kept us under Easterly hot airflow. The airflow already switched and thats why Sunday was cooler than I expected. The ridge has weaken and will start moving Eastward away from us. That means more clouds and cooler temperatures that will be closer to normal. A frontal system will move in and that should break the back of this heat wave with more fronts to follow late in the week and over next weekend.
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Here are your detailed forecasts.**
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly clear this evening, mostly cloudy tonight and Tuesday AM, mostly sunny and cooler in the afternoon, mostly clear Tuesday evening, mostly cloudy Tuesday night, a mix of clouds and sun Wednesday AM, mostly sunny and cooler in the afternoon, mostly clear in the evening, mostly cloudy Wednesday night and Thursday AM, then a mix of clouds and sun in the afternoon, partly cloudy Thursday evening and mostly cloudy late Thursday night lows 50-46 highs 80-72. Mostly cloudy Friday AM, partly cloudy Friday afternoon through Sunday evening, mostly clear Sunday night, mostly sunny Monday AM, then partly cloudy Monday afternoon highs 74-79 lows 45-49. (seasonal averages high 78 low 48)
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Forecast for the Umpqua Basin including Roseburg: Mostly clear with a slight (20%) chance of thunderstorms this evening, partly cloudy late tonight, mostly cloudy Tuesday AM, partly cloudy in the afternoon, mostly clear in the evening, mostly cloudy Tuesday night and Wednesday AM, mostly sunny Wednesday afternoon, mostly clear in the evening, mostly cloudy with patchy fog late Wednesday night and Thursday AM, mostly cloudy Thursday afternoon, then patchy fog late Thursday night lows 56-49 highs 85-75. Patchy AM fog Friday, mostly cloudy in the afternoon, partly cloudy Friday evening, mostly cloudy at night and Saturday AM, partly cloudy Saturday afternoon through Monday AM, then sunny Monday afternoon highs 76-82 lows near 48. (seasonal averages high 80 low 52)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy this evening then mostly cloudy inland tonight, cloudy at the beaches with patchy fog late tonight and early Tuesday AM, partly cloudy Tuesday afternoon, mostly cloudy with patchy fog late Tuesday night and Wednesday AM, partly cloudy in the afternoon and evening, cloudy with patchy fog Wednesday night, mostly cloudy with early AM and late night patchy fog Thursday and Thursday night lows 54-49 highs 60-64. Patchy AM fog then mostly cloudy Friday, just mostly cloudy Friday night through Saturday night, then partly cloudy Sunday through Monday highs 60-65 lows near 48. (seasonal averages high 65 low 51).
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Forecast for the Cascades of Lane County: Mostly clear tonight, mostly sunny Tuesday and Wednesday, mostly clear Tuesday night and Wednesday evening, mostly cloudy late Wednesday night and Thursday AM, a mix of clouds and sun Thursday afternoon, then mostly cloudy Thursday night free air freezing level 14,000 ft. tonight through Wednesday night, 13,000 ft. Thursday, then 11,000 ft. Thursday night lows 47-42 highs 72-62. Mostly cloudy Friday AM, partly cloudy Friday afternoon through Sunday AM, then mostly sunny Sunday afternoon and Monday with mostly clear skies Sunday night free air freezing level 11,000 ft. Friday, 12,000 ft. Friday night, snow level above 8,000 ft. Saturday through Sunday, then a free air freezing level 12,000 ft. Sunday night and Monday highs 68-64 warming to near 68 Monday lows near 43.
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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 EugeneDailyNews.com.
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