Here is my new 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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A weak frontal system moved through Oregon bring colder air aloft with it. Clear skies at night will drop low temperatures down to the mis 30s. There will be a dry spell through Saturday as a high pressure ridge moves closer, then another frontal system will return the shower chances by Sunday. Remember, Daylight Saving Time officially ends and Standard Time returns at 2:00 am Sunday November 1st (Or at Bedtime Saturday October 31st, Halloween).

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 30 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 28 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 sunny this afternoon, mostly clear and colder with patchy fog late tonight and Friday AM, partly cloudy and a bit cooler in the afternoon and Friday night with patchy fog late at night,
• Patchy AM fog, a mix of clouds and sun and a bit cooler Saturday afternoon, then becoming mostly cloudy at night.
• highs 65-60 lows 36-44.
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Sunday through Monday, just mostly cloudy Monday night and Tuesday (warmer Tuesday), a slight (20%) chance of rain Tuesday night,
• Then mostly cloudy and a bit cooler with a (40%) chance of rain Wednesday.
• highs 62-67 cooling back to 62 Wednesday lows 45-49. (seasonal averages high 61 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: Partly cloudy, near 78 degrees cooling as the game continues, wind SE 5-10 mph.

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Saturday October 24th:

Beavers vs Colorado at Reser Stadium, Corvallis– Kickoff 7:30 PM PDT: Partly cloudy, near 60 degrees cooling as the game progresses, wind SW 5-10 mph.

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Forecast for Roseburg:

• Sunny and cooler this afternoon, clear this evening, partly cloudy with patchy fog late tonight and Friday AM, partly cloudy in the afternoon and evening, just mostly cloudy late Friday night,
• Patchy AM fog, mostly cloudy and a bit warmer Saturday and Saturday night.
• highs 66-68 lows 40-46.
• Mostly cloudy with a (30%) chance of rain Sunday and Sunday night,
• A slight (20%) chance of rain Monday, mostly cloudy at night,
• A slight (20%) chance of rainTuesday, then mostly cloudy with a (30%) chance of rain Tuesday night and Wednesday.
• highs 65-68 cooling to 65 Wednesday lows near 48. (seasonal averages high 63 low 44)

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

• Sunny this afternoon,  mostly clear this evening, mostly cloudy with patchy fog late tonight,
• Patchy AM fog, partly cloudy Friday afternoon and in the evening, mostly cloudy Friday night with patchy coastal fog late,
• Patchy AM fog, mostly cloudy Saturday afternoon, a slight (20%) chance of rain Saturday night,
• highs 62-64 lows 45-52.
• Mostly cloudy with a (20%) chance of rain Sunday through Monday night,
• Then mostly cloudy with a (30%) chance of rain Tuesday through Wednesday.
• highs near 65 lows 54-52. (seasonal averages high 60 low 45).

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Forecast for the Cascades in Lane County:

• Partly cloudy and cooler this afternoon, mostly clear tonight,
• Mostly sunny Friday AM, partly cloudy in the afternoon and Friday night,
• A mix of clouds and sun Saturday, mostly cloudy in the evening, then partly cloudy Saturday night.
• free air freezing level 11,000 ft. today through Friday night, then 10,000 ft. Saturday and Saturday night.
• highs 58-60 cooling back to 58 Friday lows 32-36.
• Mostly cloudy with a slight (20%) chance of rain Sunday through Monday, a slight (20%) chance of showers Monday night and Tuesday, a slight (20%) chance of rain Tuesday night,
• Then mostly cloudy with a good (50%) chance of rain Wednesday.
• snow level above 8,000 ft. Sunday, 7,500 ft. Sunday night, above 8,000 ft. Monday through Wednesday.
• highs near 56-50 warming to 58 Tuesday cooling to 48 Wednesday 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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