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Check out my latest Eugene Daily News Weather Or Not Column Waiting For “Armageddon?” Where’s Bruce Willis When You Need Him?
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Here is my weekly weather quiz question. Today is your last chance to win this week. How does the National Weather Service define “Yellow Snow?” And no, this is not a joke. 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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Advisories: There is a Blue-Green Algae warning that continues for Dexter Reservoir and Dorena Reservoir has just been added to the list. Water monitoring has confirmed the presence of blue-green algae that can produce toxins, state public health officials said. The algae levels are likely associated with dangerous cyanotoxin concentrations in the water that can be harmful to humans and animals. Swallowing or inhaling water droplets, as well as skin contact with water, should be avoided according to the authorities.
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An upper level high pressure ridge (“Arch” shape with blue arrows) has covered the Pacific Northwest for a while giving us offshore airflow which has kept us heated up. An upper level low (“U” shape with blue arrows) is sliding down from the Gulf of Alaska. By Saturday it will push over the ridge, then move to the northeast. A weak cold front (position shown is Monday) will slowly move down from the northwest Saturday and that will mean temperatures will be cooling to the more comfortable mid to low 80s as the front slowly moves across Oregon. The slow cooling will make it more comfortable for fair goers at the Lane County Fair that continues through Sunday and the Relay For Life Friday evening through Saturday at Willamette High School.
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The Grass Pollen Count is listed as Low at 3 and Tree pollen is at 0 as of 7/25/13 and both have risen a bit according to Oregon Allergy Associates.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Partly cloudy this AM with a slight (20%) chance of scattered thunderstorms, sunny and cooler this afternoon, clear tonight, sunny and a lot cooler Saturday, mostly clear Saturday night, AM clouds, mostly sunny Sunday afternoon, mostly clear Sunday night highs 89-80 lows 52. Cloudy Monday AM, partly cloudy in the afternoon and evening, mostly cloudy late Monday night and the same pattern with steady temperatures through Thursday highs near 82 lows near 53. (seasonal averages high 84 low 52)
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Forecast for the Umpqua Basin including Roseburg: Partly cloudy with a slight (20%) chance of isolated thunderstorms early this AM, sunny this afternoon, clear tonight, sunny and much cooler Saturday, mostly clear in the evening, partly cloudy Saturday night, AM clouds, sunny Sunday, mostly clear in the evening, then partly cloudy Sunday night highs 94-82 lows near 55. Mostly cloudy Monday AM, sunny in the afternoon, mostly clear in the evening, partly cloudy late Monday night, cloudy Tuesday AM, partly cloudy in the afternoon, mostly clear in the evening, mostly cloudy late Tuesday night and Wednesday AM, sunny Wednesday afternoon, mostly clear at night, partly cloudy Thursday AM, then sunny Thursday afternoon highs 84-82 lows near 56. (seasonal averages high 86 low 57)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy with patchy coastal fog this AM, sunny this afternoon, mostly clear inland while mostly clear in the evening and mostly cloudy with patchy coastal fog late tonight and Saturday AM, sunny in the afternoon, mostly clear in the evening, mostly cloudy with patchy fog late Saturday night and Sunday AM, sunny in the afternoon, mostly clear in the evening, then mostly cloudy with patchy fog late Sunday night highs near 65 lows 52-54. Mostly cloudy Monday with patchy AM fog, cloudy Monday night and Tuesday, partly cloudy in the evening, mostly cloudy Tuesday night and Wednesday AM, sunny Wednesday afternoon, mostly cloudy at night and Thursday AM, then partly cloudy Thursday afternoon highs 66-63 lows 53-55. (seasonal averages high 65 low 53)
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Forecast for the Cascades of Lane County: Partly cloudy and cooler with a slight (20%) chance of isolated thunderstorms this AM, partly cloudy this afternoon and this evening, clear late tonight, sunny Saturday and Sunday with mostly clear nights snow level above 8,000 ft. today, free air freezing level 15,000 ft. tonight, 15,000 ft. falling to 14,000 ft. Saturday afternoon, 15,000 ft. at night, 15,000 ft. falling to 14,000 ft. Saturday, 14,000 ft. at night, 14,000 ft. falling to 13,000 ft. Sunday, then 13,000 ft. Sunday night highs 82-68 lows 47-42. Partly cloudy Monday, mostly clear in the evening, mostly cloudy at night, partly cloudy Tuesday through Wednesday night, then mostly sunny Thursday free air freezing level 14,000 ft. falling to 13,000 ft. Sunday, 13,000 ft. at night through Wednesday, 13,000 ft. falling back to 12,000 ft. Wednesday night, then 12,000 ft. rising to 13,000 ft. Thursday highs near 72 lows 46-42.
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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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