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 is moving through Oregon bringing only some clouds to the Willamette Valley today. After a slight chance of light rain or drizzle there will be a fairly 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 40 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 5 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 29 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:

• Partly cloudy this evening, cloudy with patchy fog late tonight,
• Cloudy with patchy fog and a slight (20%) chance of rain or drizzle Thursday AM, becoming partly cloudy and a bit cooler in the afternoon, mostly clear and colder with patchy fog late Thursday night,
• Mostly cloudy with areas of fog Friday AM, partly cloudy and just a bit warmer in the afternoon and Friday night with patchy fog late at night,
• Patchy AM fog, a mix of clouds and sun Saturday, then becoming mostly cloudy at night.
• lows 44-36 warming to 43 Saturday night highs near 62.
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Sunday through Tuesday (warmer Tuesday), a (30%) chance of rain Tuesday night,
• Then mostly cloudy and a bit cooler with a (40%) chance of rain Wednesday.
• highs 62-67 cooling to 60 Wednesday lows 45-49. (seasonal averages high 62 low 40)

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Your College Football Forecast:

Preliminary forecast for Thursday October 29th:

Ducks vs Arizona State at Sun Devil Stadium, Tempe, AZ– Kickoff 7:30 PM PDT: Partly cloudy then becoming mostly clear, near 78 degrees cooling as the game continues, wind SE 5-8 mph.

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Preliminary Forecast for Saturday October 24th:

Beavers vs Colorado at Reser Stadium, Corvallis– Kickoff 7:30 PM PDT: Partly cloudy to mostly cloudy then becoming partly cloudy, near 60 degrees cooling as the game progresses, wind light.

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Forecast for Roseburg:

• Partly cloudy this evening, mostly cloudy with patchy fog and a slight (20%) chance of showers late tonight and Thursday AM, partly cloudy and cooler Thursday afternoon, clear in the evening, partly cloudy with patchy fog late at night 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.
• lows 48-40 warming to 42 Friday night highs 69-66.
• Mostly cloudy with a slight (20%) chance of rain Sunday through Tuesday, then mostly cloudy with a (%) chance of rain Tuesday night and Wednesday.
• highs 67-70 lows 46-50. (seasonal averages high 64 low 44)

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

• Mostly cloudy with a slight (20%) chance of inland showers late tonight, patchy fog late tonight and Thursday AM, mostly cloudy with a slight (20%) chance of inland AM showers and partly cloudy in the afternoon while mostly sunny at the shore, mostly clear in the evening, mostly cloudy with patchy fog late Thursday night,
• 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 through Monday night, then mostly cloudy with a (30%) chance of rain Tuesday through Wednesday.
• lows 48-45 warming back to 48 Friday night highs near 63.
• Mostly cloudy with a slight (20%) chance of rain Sunday through Monday night,
• Then mostly cloudy with a (30%) chance of rain Tuesday through Wednesday.
• highs near 65 lows 48-53. (seasonal averages high 60 low 46).

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Forecast for the Cascades in Lane County:

• Partly cloudy this evening, mostly cloudy late tonight,
• A mix of clouds and sun Thursday AM, mostly sunny and cooler in the afternoon, mostly clear at night,
• Mostly sunny Friday AM, partly cloudy in the afternoon and Friday night,
• A mix of clouds and sun Saturday, then partly cloudy Saturday night.
• free air freezing level 11,000 ft. tonight, 10,000 ft. Thursday and Thursday night, 11,000 ft. Friday, then 10,000 ft. Friday night through Saturday night.
• lows 34-32 warming to 36 Saturday night highs 56-60.
• Mostly cloudy with a slight (20%) chance of rain Sunday through Tuesday, a (30%) chance of rain at night,
• Then mostly cloudy with a good (50%) chance of rain Wednesday.
  snow level above 8,000 ft. Sunday, 7,500 ft.Sunday night, 7,000 ft. Monday, above 8,000 ft, Monday through Tuesday night, then 7,500 ft. Wednesday.
• highs near 53-50 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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