Here is my new weekly weather quiz question. What is an “okta?” 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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High pressure (Shaded “Arch” shape with blue arrows) takes over for a very short time then low pressure (“Shaded “U” shape with blue arrows) returns with rain. A frontal system will be moving into Oregon and California Saturday for more rain. Remember, Daylight Saving Time officially ends and Standard Time returns this weekend 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 27 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 81 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 27 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 afternoon, mostly cloudy with a good (50%) chance of rain late tonight (0.10 in. of rain possible),
• Mostly cloudy with rain Wednesday, rain likely (70%) at night,
• Mostly cloudy with a good (50%) chance of showers Thursday AM, a mix of clouds and sun with a slight (20%) chance of afternoon showers, then just mostly cloudy at night.
• highs 64-62 warming back to 64 Friday lows 50-47.
• Mostly cloudy with a good (50%) chance of showers Friday and at night,
• Mostly cloudy with a (40%) chance of rain Saturday, rain Saturday night,
• Rain likely (70%) and a bit cooler Sunday, mostly cloudy with a good (50%) chance of showers at night,
• Then cloudy and a bit cooler with showers likely (70%) Monday.
• highs 62-56 lows 50-47. (seasonal averages high 59 low 40)

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Your College Football Forecast:

Thursday:

Ducks vs Arizona State at Sun Devil Stadium, Tempe, AZ– Kickoff 7:30 PM PDT: Partly cloudy increasing to mostly cloudy with a 30% chance of isolated evening thundershowers, near 78 degrees cooling as the game progresses, wind S 5-10 mph.

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Saturday:

Beavers vs Utah at  Rice-Eccles Stadium, Salt Lake City, Utah– Kickoff 4:00 PM PDT (5:00 PM MDT): Partly cloudy 62 and cooling as the game progresses, wind S 5-10 mph.

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Forecast for Roseburg:

• Mostly cloudy this afternoon, cloudy with a good (50%) chance of rain late tonight (under 0.10 in. of rain possible),
• Mostly cloudy and cooler with rain Wednesday AM, rain likely (70%) in the afternoon and evening, showers likely (70%) late at night,
• Mostly cloudy with a good (50%) chance of showers Thursday, then a slight (20%) chance of evening showers and just mostly cloudy late Thursday night.
• highs 66-64 lows 52-48.
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Friday through Saturday, rain Saturday night and Sunday, then showers likely (7o%) and cooler Sunday night and Monday.
• highs 67-56 lows near 49-52 cooling back to 49 Sunday night. (seasonal averages high 61 low 43)

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

• Mostly cloudy this afternoon, cloudy with a slight (20%) chance of evening coastal rain, rain late tonight and Wednesday AM, rain likely (70%) in the afternoon and evening, a good (50%) chance of rain late Wednesday night,
• Mostly cloudy and a bit cooler with a (40%) Thursday, then just mostly cloudy Thursday night.
• highs 63-60 warming back to 63 Thursday lows 53-49.
• Mostly cloudy with a slight (20%) chance of rain Friday through Saturday, rain Saturday night and Sunday, then showers likely (70%) Sunday night and Monday.
• highs 62-64 cooling back to 62 Saturday lows 50-54. (seasonal averages high 59 low 45).

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Forecast for the Cascades in Lane County:

• A mix of clouds an sun and a bit warmer this afternoon, becoming cloudy with a good (50%) chance of rain late tonight (0.10 in. of rain possible),
• Mostly cloudy with rain Wednesday AM, showers at night,
• Cloudy with showers likely (70%) Thursday, a slight (20%) chance of evening showers, then a (30%) chance of rain late Thursday night.
• free air freezing level 12,000 ft. today, snow level 8,000 ft. tonight, above 8,000 ft. falling to 7,000 ft. Wednesday afternoon, 7,000 ft. Wednesday night, then 6,500 ft. Thursday and Thursday night.
• highs 59-45 lows 40-35.
• Mostly cloudy and warmer with a good (50%) chance of rain Friday, cloudy with a good (50%) chance of rain Friday night,
• Mostly cloudy with a good (50%) chance of rain Saturday, rain Saturday night and Sunday, then rain and snow showers likely (70%) Sunday night and Monday.
• snow level  above 8,000 ft. Friday through Saturday night, 7,000 ft. Sunday, then 5,000 ft. Sunday night and Monday.
• highs near 52-44 lows 40-35.

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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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