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 22 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 14 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 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 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, mostly cloudy and a bit cooler Saturday afternoon, mostly cloudy at night,
• Mostly cloudy with a slight (20%) chance of rain Sunday AM, a (40%) chance of rain in the afternoon, then a good (50%) chance of rain Sunday night.
• lows 36-46 highs 62-60 warming back to 62 Sunday.
• Mostly cloudy with a slight (20%) chance of rain Monday, partly cloudy at night,
• A mix of clouds and sun and warmer Tuesday, mostly cloudy with a slight (20%) chance of rain Tuesday night,
• Mostly cloudy and a bit cooler with a (30%) chance of rain Wednesday, a (40%) chance of rain at night,
• Then mostly cloudy with a good (50%) chance of rain Thursday.
• highs 63-67 cooling back to 63 Thursday 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 with a slight chance of early evening then mostly cloudy with a good chance of showers through the end of the game, near 78 degrees cooling as the game continues, wind ESE 5-10 mph.

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Saturday October 24th:

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

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Forecast for Roseburg:

• Mostly clear through late this evening, partly cloudy with patchy fog late tonight,
• Sunny 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, mostly cloudy with a slight (20%) chance of rain Saturday night,
• Mostly cloudy and a bit cooler with a (30%) chance of rain Sunday, then a good (50%) chance of rain Sunday night.
• lows 40-46 highs 66-68 cooling back to 66 Sunday.
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Monday, just mostly cloudy at night,
• A slight (20%) chance of rain Tuesday, then mostly cloudy and a bit cooler with a (30%) chance of rain Tuesday night through Thursday.
• highs 68-65 lows near 47-49. (seasonal averages high 63 low 44)

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

• Mostly clear this evening, partly cloudy with patchy fog late tonight,
• AM sun with patchy fog, partly cloudy Friday afternoon, mostly cloudy with patchy coastal fog late Friday night,
• Patchy AM fog, mostly cloudy Saturday afternoon, a slight (20%) chance of rain Saturday night,
• Cloudy with a (30%) chance of rain Sunday, then rain likely (60%) Sunday night.
• lows 44-54 highs 63-65.
• Mostly cloudy with a slight (20%) chance of rain Monday, just mostly cloudy Monday night,
• Mostly cloudy with a slight (20%) chance of rain Tuesday, a (30%) chance of  Tuesday night and Wednesday, cloudy with a (40%) chance of rain at night,
• Then mostly cloudy and a bit cooler with a (40%) chance of rain Thursday.
• highs 65-62 lows near 52. (seasonal averages high 60 low 45).

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Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• Mostly sunny Friday AM, partly cloudy in the afternoon and Friday night,
• A mix of clouds and sun and a bit cooler Saturday, mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy Saturday night,
• Mostly cloudy with a slight (20%) chance of rain Sunday AM, a (30%) chance of rain and cooler in the afternoon, then mostly cloudy with a good (50%) chance of rain Sunday night.
• free air freezing level 11,000 ft. tonight through Friday night, 10,000 ft. Saturday, snow level 8,000 ft. Saturday night through Sunday night.
• lows 32-38 highs 60-55.
• Monday with a slight (20%) chance of rain, partly cloudy Monday night,
• A mix of clouds and sun and a bit warmer Tuesday, mostly cloudy with a slight (20%) chance of rain Tuesday night,
• A (40%) chance of rain and a bit cooler Wednesday, a (30%) chance of rain at night,
• Then mostly cloudy with a good (50%) chance of rain Thursday.
• snow level above 8,000 ft. Monday, free air freezing level 10,000 ft. Monday night, 12,000 ft. Tuesday, snow level above 8,000 ft. Wednesday, then 8,000 ft. Wednesday night and Thursday.
• highs near 55-58 cooling to 48 Thursday 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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