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Here is my new weekly weather quiz question. Since it has been so hot I thought I’d give you a question that might cool you off. Here it is. What location in the world set the record for the most snowfall in one season? Extra congratulations if you know the total snowfall measured and when it occurred. Please post your answer as a comment after the forecasts. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. Good luck.

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An upper level High Pressure ridge is weakening (See the “Arch” shaped area) is moving to the East.  A trough of low pressure will develop and move toward us (See “U” shape ) and another low (see small yellow circle) will move through Southern Oregon and Northern California then a cold front will be moving through Oregon Thursday. All of those combine to produce cooler weather with increased onshore airflow over the Pacific Northwest.

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Advisories:   A HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM TONIGHT FOR THE NORTHERN AND CENTRAL WILLAMETTE VALLEY, THE NORTH OREGON CASCADE FOOTHILLS,  THE WESTERN COLUMBIA GORGE, AND THE UPPER HOOD RIVER VALLEY. A RED FLAG WARNING FOR WILDFIRE DANGER IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE CENTRAL OREGON CASCADES MAINLY SOUTH OF MT. HOOD FOR DRY THUNDERSTORMS.  HOT AND DRY CONDITIONS  COULD PRODUCE LIGHTNING CAUSED FIRES .

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The summer Pollen Count Forecast season for the Eugene-Springfield area is over. From Allergy and Asthma Research Group.

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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:  Partly cloudy with a slight (20%) chance of thunderstorms this evening, mostly cloudy late tonight and Wednesday AM, mostly sunny and cooler Wednesday afternoon, mostly clear Wednesday night and Thursday night, and a mix of clouds and sun Thursday lows 52-45 highs near 80. Mostly sunny Friday, mostly clear in the evening and mostly cloudy Friday night,  Saturday AM,  and Sunday AM,  then a mix of clouds and sun and cooler Saturday and Sunday highs 77-74 lows near 46. Partly cloudy Sunday night then a mix of clouds and sun and slightly warmer Monday, mostly clear Monday night, and mostly sunny and warmer Tuesday lows 45-48 highs 80-86. (seasonal averages high 82 low 51)

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Forecast for the Umpqua Basin including, Roseburg:  Mostly cloudy tonight with isolated thunderstorms this evening with possible high winds and hail along with dangerous lightning, clouds and patchy fog late tonight and Wednesday AM, sunny Wednesday afternoon, and becoming mostly clear Wednesday night, AM clouds then sunny Thursday, mostly cloudy in the evening and partly cloudy Thursday night lows 60-54 highs 82-84. Partly cloudy Friday and Friday night, mostly cloudy Saturday through Sunday,  partly cloudy Sunday evening and clearing late at night,  mostly sunny Monday, mostly clear at night, then sunny Tuesday highs 82 Friday cooling to 77 Sunday and warming to 85 Tuesday lows near 53-50. (seasonal averages high 86 low 55)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:  Mostly cloudy with a slight (20%) chance of  isolated evening thunderstorms, a slight (20%) chance late evening showers at the shore, patchy fog late at night low 52. AM clouds and fog Wednesday,  partly cloudy in the afternoon and evening, and mostly cloudy at night with patchy coastal fog late high 62 low 47. AM clouds and coastal fog then mostly sunny Thursday,  partly cloudy  with patchy coastal fog Thursday night through Friday evening, mostly cloudy with patchy fog Friday night through Sunday highs 63 lows near 46. Partly cloudy Sunday night through Monday evening, then clear Monday night and sunny Tuesday lows 48-50 highs 62-65. (seasonal averages high 68 low 53).

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Forecast for the Cascades of Lane County:  Partly cloudy with a good (50%) chance of thunderstorms this evening and late tonight, a slight (20%) chance of AM showers Wednesday, a mix of clouds and sun and a bit cooler Wednesday afternoon, and mostly clear Wednesday night free air freezing level 14,000 ft. tonight falling to a snow level above 8,000 ft. Wednesday and back to a free air freezing level of 14,000 ft. Wednesday night lows 50-45 highs 75-73. Mostly sunny even cooler Thursday and Friday, mostly clear nights free air freezing level 14,000 ft. falling to 13,000 ft. Friday and 12,000 ft. Friday night highs 73-70 lows 45-42. A mix of clouds and sun Saturday, partly cloudy with a slight (20%) chance of showers late Saturday night, Sunday, and Sunday evening, and partly cloudy Sunday night  free air freezing level 11,000 ft. Saturday lowering to a snow level above 8,000 ft. Saturday night through Sunday night highs 68-66 lows near 42. Mostly sunny Monday and Tuesday, mostly clear at night free air freezing level 12,000 ft. Monday, rising to 13,000 ft. Monday night and Tuesday highs 75-77 low near 45.

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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.