Here is my new weekly weather quiz question. What is “Juvenile Water?” 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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An upper level high pressure ridge has taken over bringing back the sunshine and warming us up for the rest of the week into the weekend. We could see 100 degrees before the week is out and the 90s could be around a bit longer.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 41 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 6 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 44 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM FRIDAY FOR THE MT. HOOD NATIONAL FOREST WEST OF THE CASCADE CREST, THE WILLAMETTE NATIONAL FOREST WEST OF THE CASCADE CREST, AND THE WILLAMETTE VALLEY AND ADJACENT FOOTHILLS, THE NORTH AND CENTRAL OREGON CASCADES, THE FOOTHILLS, ALL OF THE INTERIOR LOWLANDS, AND THE CENTRAL OREGON COAST RANGE.
• A RED FLAG WARNING IS IN EFFECT FROM 11 AM UNTIL 8 PM TODAY FOR THE UMPQUA BASIN.
• A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM FRIDAY FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE LOWER COLUMBIA, THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY, THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE AND THE UPPER HOOD RIVER VALLEY.
• A HEAT ADVISORY IS IN EFFECT UNTIL 1 PM THURSDAY FOR THE CURRY COUNTY COAST.
• A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM SATURDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY AND JACKSON COUNTY.
• A HEALTH ADVISORY HAS BEEN ISSUED FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Clear tonight,
• Sunny and warmer (Hot!) Thursday, clear at night,
• Mostly sunny and hot Friday, partly cloudy Friday night,
• Then partly cloudy and just a bit cooler Saturday and Saturday night.
• lows 62-58 highs 102-96.
• Partly cloudy Sunday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy at night,
• Mostly sunny and a bit cooler Monday, partly cloudy at night and Tuesday AM, mostly sunny and cooler Tuesday afternoon and Wednesday, partly cloudy Tuesday night.
• highs 95-85 lows 57-55. (seasonal averages high 84 low 52)

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Eugene/Springfield Pollen Count:

Trees: Low- 4

Grass: Moderate- 5

Reading as of: 7/25/15

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Forecast for the Umpqua Basin including Roseburg:

• Clear tonight,
• Sunny and warmer (Hot!) Thursday, clear at night,
• Sunny Friday AM, partly cloudy and slightly cooler but still hot with a slight (20%) chance of thunderstorms in the afternoon and evening, just partly cloudy Friday night,
• Partly cloudy and cooler with a slight (20%) chance of thunderstorms Saturday and Saturday night.
• lows near 66 highs 105-102.
• Partly cloudy and cooler Sunday and Sunday night,
• Mostly sunny with a slight (20%) chance of thunderstorms Monday,  mostly clear with a slight (20%) chance of thunderstorms Monday night,
• Partly cloudy Tuesday AM, sunny and cooler with a slight (20%) chance of thunderstorms and cooler Tuesday afternoon, mostly clear at night,
• Then sunny and a bit cooler Wednesday.
• highs 98-90 lows 65-58. (seasonal averages high 86 low 57)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Clear tonight,
• Sunny Thursday and Friday, clear Thursday night, partly cloudy with  a slight (20%) chance of evening inland thunderstorms, just partly cloudy late Friday night,
• Partly cloudy with a slight (20%) chance of thunderstorms Saturday and at night.
• lows near 62 highs 70-75 cooling back to 70 Saturday.
• Partly cloudy Sunday through Monday AM, sunny and a bit warmer in the afternoon, then partly cloudy Monday night through Wednesday.
• highs 67-70 cooling back to 67 Wednesday lows near 56. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Clear tonight,
• Sunny and warmer Thursday, clear at night,
• Sunny Friday AM, partly cloudy and warm in the afternoon, just partly cloudy Friday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Saturday afternoon, then just partly cloudy Saturday night.
• free air freezing level 15,000 ft. tonight through Friday, snow level above 8,000 ft. Friday night and Saturday, free air freezing level 15,000 ft. Saturday night.
• lows near 56 highs 89-86.
• Partly cloudy and cooler with a slight (20%) chance of showers and thunderstorms Sunday afternoon through Wednesday AM, then mostly sunny and a bit cooler Wednesday afternoon, .
• snow level above 8,000 ft. Sunday through Wednesday.
• highs 82-72 lows 55-52.

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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 and Lane County news on-line at eugenedailynews.com.

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