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 that gave us record high temperatures in the 100s will slowly move away allowing for a cooling trend to more reasonable temperatures.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 58 in the Moderate category measuring Ozone.

Oakridge: The Air Quality Index is 21 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 67 in the Moderate 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 10 PM SATURDAY FOR HOT, DRY, UNSTABLE CONDITIONS COMBINED WITH CRITICALLY DRY FUELS FOR NORTH OREGON COAST RANGE, THE EAST SLOPES OF THE CENTRAL OREGON COAST RANGE, THE WILLAMETTE VALLEY AND ADJACENT FOOTHILLS, THE NORTH OREGON CASCADES FOOTHILLS, THE GIFFORD PINCHOT NATIONAL FOREST, THE MT. HOOD NATIONAL FOREST WEST OF THE CASCADE CREST, THE WILLAMETTE NATIONAL FOREST , THE DESCHUTES NATIONAL FOREST AND MINUS THE WILLAPA HILLS INCLUDING PORTIONS OF THE SISTERS RANGER DISTRICT, THE SIUSLAW NATIONAL FOREST, THE TILLAMOOK NATIONAL FOREST AND OTHER OREGON DEPARTMENT OF FORESTRY AND BLM LANDS AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN IN EASTERN LAKE AND WESTERN HARNEY COUNTIES.
• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE UMPQUA BASIN, THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST AND THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY.
• A RED FLAG WARNING IS IN EFFECT UNTIL FROM 2 PM UNTIL 11 PM SATURDAY FOR THE UMPQUA BASIN AND THE FREMONT-WINEMA NATIONAL FOREST.
• A RED FLAG WARNING IS IN EFFECT UNTIL 10 PM SATURDAY FOR THE CENTRAL MOUNTAINS OF OREGON, THE SOUTHERN BLUE MOUNTAINS AND THE STRAWBERRY MOUNTAINS.
• A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM TONIGHT FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON,  THE LOWER COLUMBIA, THE NORTHERN OREGON CASCADE FOOTHILLS, AND THE CASCADE FOOTHILLS IN LANE COUNTY.
• A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM SATURDAY FOR THE EAST COLUMBIA RIVER GORGE OF OREGON, THE LOWER COLUMBIA BASIN AND THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS.
• AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR 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 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:

• Partly cloudy and a bit cooler tonight and Saturday, partly cloudy with a slight (20%) chance of showers late Saturday night,
• Just partly cloudy and cooler Sunday through Monday AM, mostly sunny in the afternoon, then mostly clear Monday night.
• lows near 60 highs 98-92.
• Mostly sunny and a bit cooler Tuesday, partly cloudy Tuesday night through Thursday AM, mostly sunny and cooler Thursday afternoon, then just partly cloudy Thursday night and Friday.
• highs 88-82 lows near 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

*Now the grass pollen season is officially over.

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Forecast for the Umpqua Basin including Roseburg:

• Mostly clear and hazy with patches of smoke and a slight (20%) chance of evening thunderstorms, partly cloudy with patchy smoke late tonight,
• Areas of AM smoke, partly cloudy and cooler Saturday afternoon with a slight (20%) chance of dry thunderstorms in the afternoon and evening, mostly cloudy with a slight (20%) chance of showers late at night,
• Then partly cloudy and cooler Sunday with a slight (20%) chance of afternoon and evening thunderstorms, just partly cloudy late Sunday night,
• Partly cloudy Monday AM, sunny in the afternoon, mostly clear in the evening, then partly cloudy late at night.
• lows 68-62 highs 100-93.
• Partly cloudy and cooler with a slight (20%) chance of thunderstorms Tuesday and Tuesday night,
• Partly cloudy and a bit cooler Wednesday and at night,
• Sunny just a bit warmer Thursday, mostly clear in the evening, partly cloudy Thursday night,
• Then partly cloudy and a bit cooler with a slight (20%) chance of showers Friday afternoon.
• highs 90-84 lows near 58. (seasonal averages high 86 low 57)

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

• Mostly clear this evening, partly cloudy late tonight,
• Mostly cloudy Saturday AM, partly cloudy and a bit cooler in the afternoon with a slight (20%) chance of inland afternoon and evening thunderstorms, mostly cloudy with a slight (20%) chance of showers late at night,
• Partly cloudy Sunday AM, sunny in the afternoon, mostly clear in the evening, partly cloudy Sunday night and Monday AM, sunny in the afternoon, mostly clear in the evening then partly cloudy late Monday night.
• lows near 57 highs near 67.
• Partly cloudy Tuesday through Wednesday, mostly clear Wednesday night,
• Mostly sunny Thursday, then partly cloudy Thursday night and Friday.
• highs near 68 lows near 56. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Partly cloudy with haze and areas of smoke tonight,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Saturday afternoon and evening, a slight (20%) chance of showers late Saturday night,
• Partly cloudy and cooler with a slight (20%) chance of showers and thunderstorms Sunday through Sunday evening, just partly cloudy at night,
• Partly cloudy and cooler with a slight (20%) chance of showers and thunderstorms Monday and Monday night.
• free air freezing level 15,000 ft. tonight, snow level above 8,000 ft. Saturday through Monday night.
• lows 57-52 highs 88-78.
• Partly cloudy with a slight (20%) chance of showers and thunderstorms Tuesday afternoon and evening, partly cloudy Tuesday night through Wednesday night,
• Mostly sunny Thursday, partly cloudy at night,
• Then partly cloudy with a slight (20%) chance of showers Friday afternoon.
• snow level above 8,000 ft. Tuesday and Tuesday night, free air freezing level 11,000 ft. Wednesday through Thursday night, then snow level above 8,000 ft. Friday.
• highs 75-68 lows near 48.

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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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