Here is my weekly weather quiz question for the last time. What is “a Land Breeze?” Here is the correct answer. A Land Breeze is a coastal breeze at night blowing from land to sea, caused by the difference in the rates of cooling of their respective surfaces. I’ll have a new weekly weather quiz question for you starting Monday. 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 ridge of high pressure will be building up again clearing things out. Another frontal system will be moving through the Pacific Northwest Tuesday, but it will fizzle out and the high pressure will strengthen to keep the rain away from us. Yet another frontal system will hit the coast Sunday, but this time there will be a chance of getting wet Saturday and Sunday AM. 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 33 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 13 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 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:

• Sunny and a bit warmer this afternoon (Columbus Day), clear this evening, mostly cloudy with patchy fog late tonight and Tuesday AM, mostly sunny and a bit warmer in the afternoon, mostly clear with patchy fog Tuesday night,
• Partly cloudy with areas of fog in the AM, mostly sunny Wednesday afternoon, then mostly clear at night.
• highs 75-78 lows 45-48.
• Mostly sunny Thursday, mostly clear Thursday night,
• Partly cloudy Friday and Friday night,
• Mostly cloudy and a bit cooler with a good (50%) chance of rain Saturday, a (40%) chance of rain at night,
• Then mostly cloudy with a slight (20%) chance of rain Sunday.
• highs 78-70 lows near 50. (seasonal averages high 66 low 42)
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Your Saturday College Football Forecast:

Ducks vs Washington at Husky Stadium, Seattle, WA– Kickoff 7:30 PM PDT: Mostly cloudy with light rain likely (70%), 60 degrees cooling a bit as the game progresses, wind S 8 mph.

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Beavers vs Washington State at Martin Stadium, Pullman, WA – Kickoff 1:00 PM PDT: Mostly sunny, 68 degrees and warming to near 75 degrees by the end of the game, wind SSW 5-10 mph.

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Forecast for the Umpqua Basin including Roseburg:

• Sunny and a bit warmer this afternoon (Columbus Day), Tuesday and Wednesday, clear each night.
• highs 76-83 lows 50-52.
• Sunny and warmer Thursday, partly cloudy at night through Friday night (cooler Friday),
• Mostly cloudy and a bit cooler with a (30%) chance of rain Saturday and at night,
• Then mostly cloudy with a slight (20%) chance of rain Sunday.
• highs 88-75 lows near 53. (seasonal averages high 68 low 45)

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

• Sunny this afternoon (Columbus Day), mostly clear with patchy coastal fog late tonight,
• Patchy AM coastal fog, sunny and a bit warmer Tuesday, mostly clear at night,
• Then patchy AM fog, sunny and a bit warmer Wednesday, clear  Wednesday night.
• highs 65-68 lows 52-54.
• Sunny and a bit cooler Thursday, partly cloudy at night and Friday, mostly cloudy with a slight (20%) chance of rain Friday night,
• Cloudy and a bit warmer with a (30%) chance of rain Saturday and at night then mostly cloudy with a slight (20%) chance of rain Saturday night and Sunday.
• highs 69-63 lows near 53. (seasonal averages high 62 low 46).

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Forecast for the Cascades in Lane County:

• Sunny and warmer today (Columbus Day) and Tuesday,  mostly clear each night,
• Mostly sunny and a bit warmer Wednesday, then mostly clear at night.
• free air freezing level 14,000 ft. today and tonight, 15,000 ft. Tuesday, 14,000 ft. Tuesday night through Wednesday night.
• highs 67-76 lows 40-42.
• Mostly sunny and a bit cooler Thursday, partly cloudy Thursday night through Friday night,
• Becoming mostly cloudy and cooler with a (40%) chance of rain Saturday, a good (50%) chance of rain Saturday night,
• Then mostly cloudy and a bit cooler with a (40%) chance of rain Sunday.
• free air freezing level 14,000 ft. Thursday and Thursday night, 13,000 ft. Friday and Friday night, then snow level above 8,000 ft. Saturday through Sunday.
• highs 77-64 lows 44-40.

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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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