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 27 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 20 in the Good category measuring Particulate Matter.

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

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Advisories:

• A RED FLAG WARNING IS IN EFFECT  UNTIL 11 AM TODAY FOR THE UPPER SLOPES AND RIDGES IN EASTERN DOUGLAS COUNTY, THE UPPER SLOPES AND RIDGES IN JOSEPHINE COUNTY, THE UPPER SLOPES AND RIDGES IN CURRY COUNTY, THE UPPER SLOPES AND RIDGES IN COOS COUNTY, THE UPPER SLOPES AND RIDGES IN JACKSON COUNTY AND EXTREME WESTERN KLAMATH COUNTY.
• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM THURSDAY FOR THE MT. HOOD NATIONAL FOREST WEST OF THE CASCADE CREST, THE WILLAMETTE NATIONAL FOREST WEST OF THE CASCADE CREST, AND THE SOUTHERN WILLAMETTE VALLEY AND ADJACENT FOOTHILLS.
• 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 FROM 1 PM TODAY 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, 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:

• Sunny and warmer (Hot!) today, Thursday and Friday, clear each night.
• highs 97-101 lows 60-64.
• Mostly sunny Saturday AM, partly cloudy and a bit cooler in the afternoon through Tuesday.
• highs 96-90 lows near 60. (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:

• Sunny and warmer (Hot!) today and Thursday, clear both nights,
• Sunny Friday AM, partly cloudy and still hot with a slight (20%) chance of thunderstorms in the afternoon and Friday night.
• highs 105-102 lows near 66.
• Partly cloudy and cooler with a slight (20%) chance of thunderstorms Saturday and in the evening, partly cloudy and cooler late Saturday night through Monday night,
• Then partly cloudy with a slight (20%) chance of thunderstorms and cooler Tuesday afternoon.
• highs 102-95 lows 65-63. (seasonal averages high 86 low 57)

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

• Sunny and warmer today, cooler Thursday and warmer again Friday, clear tonight and Thursday night, partly cloudy Friday night.
• highs 75-70 warming back to 75 Friday lows near 62.
• Partly cloudy Saturday through Tuesday.
• highs 69-67 lows near 56. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Sunny and warmer today and Thursday, clear both nights,
• Sunny Friday AM, partly cloudy and warm in the afternoon, a slight (20%) chance of showers and thunderstorms in the evening, just partly cloudy Friday night.
• free air freezing level 14,000 ft. today, 15,000 ft. tonight through Friday, then snow level above 8,000 ft. Friday night.
• highs 85-88 lows 56-58.
• Partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Saturday afternoon through Tuesday.
• snow level above 8,000 ft. Saturday through Tuesday.
• highs 86-80 lows 55-53.

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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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