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 clearing things out again. 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. 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 26 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 6 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 23 in the Good category measuring Particulate Matter.

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

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Advisories:

• A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITIES FOR THE KLAMATH BASIN, THE FREMONT-WINEMA  NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LATE COUNTY AND WESTERN HARNEY COUNTY.
• 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:

• Mostly cloudy with rain changing to showers this evening, a good (50%) chance of showers late tonight (0.25 in. of rain possible),
• Mostly cloudy with patchy AM fog, mostly sunny but cooler Sunday afternoon, partly cloudy with patchy fog late Sunday night and Monday AM, mostly sunny and a bit warmer in the afternoon (Columbus Day), partly cloudy with patchy fog at night,
• A mix of clouds and sun with patchy fog Tuesday AM, mostly sunny and a bit warmer in the afternoon, then mostly clear Tuesday night.
• lows 50-45 warming back to 50 Tuesday night highs 72-78.
• Mostly sunny Wednesday and Thursday, mostly clear Wednesday night, partly cloudy Thursday night,
• Partly cloudy Friday and Friday night,
• Then mostly cloudy and a bit cooler with a slight (20%) chance of rain Saturday.
• highs 78-75 lows near 48. (seasonal averages high 67 low 42)

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Forecast for the Umpqua Basin including Roseburg:

• Mostly cloudy with showers likely (70%) this evening, a slight (20%) chance of showers late tonight (under 0.10 in. of rain possible),
• Mostly cloudy in the AM, sunny and a bit warmer Sunday afternoon and Monday (Columbus Day), mostly clear Sunday night, clear Monday night,
• Then sunny and warmer Tuesday, clear at night.
• lows 52-48 warming back to 52 Tuesday night highs 77-85.
• Mostly sunny Wednesday, Thursday and Friday, mostly clear each night,
• Then partly cloudy with a (30%) chance of showers Saturday.
• highs 89-80 lows 54-52. (seasonal averages high 69 low 46)

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

• Mostly cloudy with evening showers likely (70%), a slight (20%) chance of showers late tonight (0.15 in. of rain possible),
• Mostly sunny Sunday AM, partly cloudy in the afternoon, mostly clear in the evening, partly cloudy late Sunday night and Monday AM, sunny Monday afternoon (Columbus Day), clear Monday night,
• Sunny and a bit warmer Tuesday, then clear at night.
• lows 54-50 warming back to 54 Tuesday night highs 64-68.
• Mostly sunny Wednesday, Thursday and Friday, mostly clear each night,
• Then partly cloudy with a (30%) chance of showers Saturday.
• highs 70-64 lows 55-52. (seasonal averages high 62 low 47).

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Forecast for the Cascades in Lane County:

• Cloudy with rain changing to showers this evening, showers tonight (0.50 in. of rain possible) and breezy (Wind: SW 15-25 mph gusts to 45 mph decreasing and shifting to W 5-15 mph late tonight),
• A mix of clouds and sun Sunday AM, mostly sunny and a bit warmer in the afternoon, partly cloudy Sunday night,
• Then mostly sunny and warmer Monday (Columbus Day) and Tuesday and mostly clear both nights.
• snow level above 8,000 ft. falling to 7,500 ft. late tonight, free air freezing level 12,000 ft. rising to 13,000 ft. Sunday, 13,000 ft. Sunday night, 14,000 ft. Monday and Monday night, 15,000 ft. Tuesday, then 14,000 ft. Tuesday night.
• lows 36-43 cooling to 40 Tuesday night highs 64-72.
• Mostly sunny and warmer Wednesday and cooler Thursday, mostly clear Wednesday night, partly cloudy Thursday night,
• Partly cloudy and a bit cooler Friday and at night,
• Then mostly cloudy with a slight (20%) chance of rain Saturday.
• free air freezing level 13,000 ft. Wednesday, 14,000 ft. Wednesday night and Thursday, 13,000 ft. Thursday night, 12,000 ft. Friday, 13,000 ft. Friday night, then snow level above 8,000 ft. Saturday.
• highs 79-70 lows near 42.

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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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