Here is my weekly weather quiz question. What is “Obscuration?” 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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The upper airflow will be bringing moisture back to the Pacific Northwest Saturday night into Sunday. A frontal system (look to the northwest) will bring the chance of rain with it by late Saturday. High pressure will start to clear the skies again Monday. Then it looks like there will be a cold front moving into Oregon and California. Remember, Daylight Saving Time officially ends and Standard Time returns at 2:00 am Sunday November 1st (Or at Bedtime Saturday October 31st, Halloween). That is just over a week from now.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 42 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 19 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

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

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Advisories:

• A HEALTH ADVISORY CONTINUES FOR WILLOW CREEK RESERVOIR JUST EAST OF THE TOWN OF HEPNER IN MORROW COUNTY (NE CORNER OF OREGON). 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.
• A HEALTH ADVISORY CONTINUES FOR THE CLACKAMAS COVE PORTION OF THE CLACKAMAS  RIVER IN CLACKAMAS 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.
• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.
• A HEALTH ADVISORY CONTINUES 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:

• Mostly cloudy with patchy fog late tonight and Saturday AM, a mix of clouds and sun and a bit warmer in the afternoon, partly cloudy in the evening, mostly cloudy late Saturday night,
• Cloudy with a slight (20%) chance of rain Sunday AM, a good (50%) chance of rain and a bit cooler in the afternoon and Sunday night,
• A mix of clouds and sun and a bit warmer Monday with a (40%) chance of AM rain, a slight (20%) chance of afternoon rain, then partly cloudy Monday night.
• lows 38-48 cooling to 45 Monday night highs 65-60 warming back to 65 Monday.
• Partly cloudy and warmer Tuesday, mostly cloudy with a slight (20%) chance of rain Tuesday night,
• Cloudy and a bit cooler with a good (50%) chance of rain Wednesday and Wednesday night,
• Cloudy with a good (50%) chance of rain Thursday, partly cloudy with a (30%) chance of rain at night,
• Then a mix of clouds and sun with a (30%) chance of rain Friday.
• highs 66-62 lows 46-49 cooling back to 46 Friday. (seasonal averages high 60 low 40)

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Your College Football Forecast:

Thursday October 29th:

Ducks vs Arizona State at Sun Devil Stadium, Tempe, AZ– Kickoff 7:30 PM PDT: Clear skies, near 72 degrees cooling as the game continues, wind NE 5-8 mph.

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Saturday October 24th:

Beavers vs Colorado at Reser Stadium, Corvallis– Kickoff 7:30 PM PDT: Partly cloudy, near 58 degrees cooling as the game progresses, wind S 5-10 mph becoming light.

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Forecast for Roseburg:

• Mostly cloudy tonight and Saturday, a slight (20%) chance of rain Saturday night,
• Cloudy with a slight (20%) chance of rain Sunday AM, rain and a bit cooler in the afternoon, cloudy with rain likely (60%) in the evening, a good (50%) chance of showers late Sunday night,
• Mostly cloudy and a bit warmer with a (30%) chance of showers Monday, then just partly cloudy at night.
• lows 42-49 highs 66-68 cooling back to 66 Sunday.
• Partly cloudy Tuesday, mostly cloudy with a slight (20%) chance of rain Tuesday night,
• Mostly cloudy and cooler with rain likely (60%) Wednesday and at night,
•  Mostly cloudy with a (40%) chance of rain Thursday and Thursday night,
• Then just mostly cloudy and a bit warmer Friday.
• highs 68-65 lows near 47-49. (seasonal averages high 63 low 43)

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

• Mostly cloudy with areas of coastal fog late tonight and Saturday AM,  mostly cloudy Saturday afternoon, mostly cloudy with areas of coastal fog Saturday night,
• Cloudy with coastal rain Sunday while AM inland rain likely (70%) and inland rain and a bit warmer in the afternoon, evening coastal rain likely (60%) and showers likely (70%) late Sunday night while rain in the evening inland and a good (50%%) chance of inland showers late at night,
• Mostly cloudy with a slight (20%) chance of showers Monday, then just mostly cloudy Monday night.
• lows 46-55 cooling to 50 Monday night highs 62-65.
• Mostly cloudy Tuesday, a (30%) chance of rain Tuesday night,
• Rain likely (60%) Wednesday and at night,
• Mostly cloudy and a bit cooler with a (40%) chance of rain Thursday and Thursday night,
• Then just mostly cloudy and a bit warmer Friday.
• highs 65-62 warming to 66 Friday lows 53-50 (seasonal averages high 60 low 45).

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Forecast for the Cascades in Lane County:

• Mostly cloudy tonight,
• A mix of clouds and sun and a bit cooler Saturday, partly cloudy in the evening, just mostly cloudy late Saturday night,
• Mostly cloudy with a (40%) chance of rain and cooler Sunday afternoon, rain likely (70%) Sunday night,
• Mostly cloudy with a good (50%) chance of rain Monday, then partly cloudy Monday night.
• free air freezing level 11,000 ft. tonight, 10,000 ft. Saturday, 11,000 ft. Saturday night, snow level 7,500 ft. Sunday, 8,000 ft. Sunday night, 7,500 ft. Monday, then free air freezing level 10,000 ft. Monday night.
• lows 32-37 highs 58-54.
• Partly cloudy and a bit warmer Tuesday, mostly cloudy with a slight (20%) chance of rain Tuesday night,
• A (30%) chance of rain and a bit cooler Wednesday, a good (50%) chance of rain at night,
• Mostly cloudy with a rain likely (60%) Thursday, a (30%) chance of rain at night,
• Then a mix of clouds and sun with a slight (20%) chance of rain Friday.
• free air freezing level 10,000 ft. Tuesday, snow level above 8,000 ft. Tuesday night through Wednesday night, then 7,500 ft. Thursday through Friday.
• highs near 56-49 lows near 38.

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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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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

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