Here is my weekly weather quiz question for the last time. What is “Deep Percolation Loss?” Here is the correct answer. Deep Percolation Loss in hydrologic terms, water that percolates downward through the soil beyond the reach of plant roots. 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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The Jet Stream is swinging the air in from the west. A frontal system moved through the Pacific Northwest, but didn’t produce much precipitation.  There will be a break then a chance of showers again Tuesday. You might want to look up Sunday evening to see the “Super Moon Lunar Eclipse.” Here in the Pacific Northwest the moon will rise around 7 pm at which time the eclipse will be in totality and then continue to reveal the full Blood Moon when it is done. It’s called a Super Moon because it will look larger than normal due to its position relative to the earth. A frontal system will bring back the chance for rain by Tuesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 29 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 9 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 30 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 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 tonight and Sunday AM, mostly sunny in the afternoon, mostly clear at night,
• Mostly sunny Monday, partly cloudy Monday night,
• A mix of clouds and sun Tuesday, then partly cloudy with a slight (20%) chance of showers late Tuesday night.
• lows 39-49 highs 73-80 cooling to 76 Tuesday.
• A mix of clouds and sun with a slight (20%) chance of showers Wednesday, mostly cloudy with a slight (20%) chance of showers at night,
• Partly cloudy with a slight (20%) chance of showers Thursday AM, patchy fog in the  afternoon, partly cloudy with patchy fog late Thursday night and  Friday AM, just partly cloudy in the afternoon, a slight (20%) chance of showers late Friday night,
• Then a mix of clouds and sun with a slight (20%) chance of showers Saturday.
• highs 70-75 lows 47-45. (seasonal averages high 73 low 45)

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Your Saturday College Football Forecast:

Ducks vs Utah at Autzen Stadium – Kickoff 5:30 PM PDT: Partly cloudy 68 and cooling through the 60s as the game progresses, wind: N 5-15 mph.

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Forecast for the Umpqua Basin including Roseburg:

• Partly cloudy tonight and Sunday morning, sunny in the afternoon and Monday,  mostly clear Sunday night and Monday evening, partly cloudy late Monday night,
• Partly cloudy and a bit warmer Tuesday, then partly cloudy with a slight (20%) chance of showers Tuesday night.
• lows 47-52 highs 75-82 cooling to 78 Tuesday.
• Partly cloudy with a slight (20%) chance of showers Wednesday, mostly cloudy with a slight (20%) chance of showers Wednesday night and Thursday, just partly cloudy Thursday night,
• Partly cloudy Friday through Saturday AM, then sunny Saturday afternoon.
• highs 73-80 cooling to 77 Saturday lows 49-52. (seasonal averages high 75 low 49)

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

• Partly cloudy this evening, mostly clear late tonight,
• Sunny Sunday and Monday, mostly clear Sunday night and Monday evening, partly cloudy late Monday night,
• Partly cloudy with a slight (20%) chance of showers Tuesday AM, partly cloudy in the afternoon, then partly cloudy with a slight (20%) chance of showers Tuesday night.
• lows 47-52 highs 64-62.
• Partly cloudy with a slight (20%) chance of showers Wednesday, mostly cloudy with a slight (20%) chance of showers Wednesday night and Thursday, partly cloudy Thursday night through Friday night,
• Then sunny and a bit cooler Saturday.
• highs 64-68 cooling back to 64 Saturday lows 50-52. (seasonal averages high 64 low 48).

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Forecast for the Cascades in Lane County:

• Partly cloudy and colder tonight and Sunday AM, mostly sunny in the afternoon, mostly clear Sunday night,
• Mostly sunny Monday AM, partly cloudy and warmer in the afternoon, partly cloudy at night,
• Partly cloudy Tuesday with a slight (20%) chance of showers in the afternoon and Tuesday night.
• free air freezing level 12,000 ft. tonight through Monday, then snow level above 8,000 ft. Monday night through Tuesday night.
• lows 36-40 highs 62-68 cooling back to 62 Monday.
• Partly cloudy with a slight (20%) chance of showers Wednesday AM, slight (20%) chance of showers and thunderstorms and evening, a slight (20%) chance of showers late Wednesday night,
• Partly cloudy with a slight (20%) chance of showers Thursday AM, just partly cloudy in the afternoon through Friday, partly cloudy with a slight (20%) chance of showers Friday night through Saturday AM, then partly cloudy Saturday afternoon.
• snow level above 8,000 ft. Wednesday through Thursday, free air freezing level 12,000 ft. Thursday night and Friday, then snow level above 8,000 ft. Friday night and Saturday.
• highs 60-70 lows near 37-42.

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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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