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) took over for a very short time and now low pressure (“Shaded “U” shape with blue arrows) returns with rain.  A frontal system is headed our way. The warm front will move in between tonight and Friday followed by the cold front on Saturday. Sorry, but Halloween will be quite wet. 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). Turn your clocks BACK one hour. Remember the Fire Department recommends that you check the batteries in your smoke alarms, CO2 detectors, and Raydon detectors to make sure they still work. Chance them if necessary

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 26 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 45 in the Good category measuring Particulate Matter.

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

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Advisories:

• A HEALTH ADVISORY HAS BEEN LIFTED 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 HAS DROPPED TO SAFE LEVELS.
• 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  HAS BEEN LIFTED 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 LEVELS HAVE DROPPED TO A NON-DANGEROUS LEVEL.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with evening showers likely (70%), a good (50%) chance of showers late tonight (under 0.10 in. of rain possible),
•  Partly cloudy with a good (50%) chance of showers Thursday AM, a slight (20%) chance of afternoon showers (under 0.10 in. of rain possible), partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain late at night,
• Mostly cloudy with rain likely (60%) Friday and Friday night,
• Mostly cloudy with rain Saturday and Saturday night.
• lows 50-55 cooling back to 50 Saturday night highs 65-62.
• Mostly cloudy and cooler with showers likely (70%) Sunday through Monday, a (40%) chance  of showers Monday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Tuesday, then just partly cloudy at night and Wednesday.
• highs 58-55 lows 45-40. (seasonal averages high 58 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 slight chance of a shower, near 70 degrees cooling to 60 by the end of the game, wind E 5-8 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): Mostly sunny then mostly clear, 63 and cooling as the game progresses, wind S-SE 5-10 mph.

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Forecast for Roseburg:

• Mostly cloudy with a (30%) chance of showers scattered tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of isolated showers Thursday AM, becoming partly cloudy in the evening, mostly cloudy with patchy fog late Thursday night,
• Mostly cloudy and a bit cooler with a (30%) chance of rain Friday, cloudy with a (30%) chance of rain Friday night,
• Mostly cloudy and a bit warmer with a (40%) chance of rain Saturday, then rain Saturday night.
• lows 50-54 cooling to 52 Saturday night highs 67-63.
• Mostly cloudy with rain and cooler Sunday, showers likely (70%) and colder Sunday night,
• Showers likely (70%) Monday, mostly cloudy with a (30%) chance of showers Monday night through Tuesday night,
• Then just partly cloudy Wednesday.
• highs near 58 lows near 46-40. (seasonal averages high 60 low 43)

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

• Mostly cloudy with coastal showers this evening and a (30%) chance of scattered showers late tonight while a (30%) chance of inland showers tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of scattered coastal AM showers while isolated inland showers Thursday AM (under 0.10 in. of rain possible), just partly cloudy in the afternoon and evening, mostly cloudy Thursday night with patchy fog and a slight (20%) chance of isolated coastal showers late at night,
• Mostly cloudy with a (30%) chance of rain Friday and Friday night,
• Mostly cloudy with a (40%) chance of rain Saturday, then rain and breezy Saturday night.
• lows 55-52 warming to 57 Friday night cooling to 54 Saturday night highs near 62.
• Mostly cloudy and cooler with rain likely (70%) Sunday, showers likely (70%) Sunday night and Monday, a (30%) chance of showers Monday night and Tuesday, a slight (20%) chance of showers Tuesday night,
• Then just partly cloudy Wednesday.
• highs near 57 lows 50-46. (seasonal averages high 59 low 45).

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Forecast for the Cascades in Lane County:

• Mostly cloudy with showers likely (70%) this evening, a good (50%) chance of showers late tonight (0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of showers Thursday, a slight (20%) chance of rain Thursday night,
• Cloudy and a bit warmer with a good (50%) chance of rain Friday, rain in the afternoon,  a good (50%) chance of rain Friday night,
• Then rain Saturday and Saturday night.
• snow level 7,000 ft. tonight, 7,500 ft. Thursday, above 8,000 ft. Thursday night through Saturday night.
• lows 38-42 cooling back to 38 Saturday night highs 48-52.
• Mostly cloudy and cooler with rain Sunday and Sunday night,
• Showers likely (70%) and a bit cooler Monday, cloudy with a (40%) chance of showers at night.
• A mix of clouds and sun and a bit warmer with a (40%) chance of showers Tuesday, partly cloudy with a slight (20%) chance of showers Tuesday night,
• Then just partly cloudy Wednesday.
• snow level 7,000 ft. Sunday, 5,000 ft. Sunday night, 4,5000 ft. Monday and Monday night, 4,000 ft. Tuesday and Tuesday night, then free air freezing level 4,500 ft. Wednesday.
• highs near 42-35 warming to 40 Wednesday lows 36-25.

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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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