Here is my new weekly weather quiz question. What is a “Lightning Channel?

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An Upper Level Low  and surface low with it associated cold front are approaching the California coast keeping the weaker flow of coastal moisture still aimed our way. The graphics for days 1-3  show the frontal system, as described above ,apparently falling as part as it makes landfall. The graphics for days 3-7  Thursday through next Monday show a quiet weather pattern, but a frontal system can be seen offshore to our west Sunday.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 16 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 8 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 21 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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ADVISORIES:

• A FLOOD WARNING IS IN EFFECT UNTIL LATE THIS EVENING FOR THE JOHN DAY RIVER AT SERVICE CREEK AFFECTING WHEELER COUNTY DUE TO RAIN AND SNOW MELT.
• A FLOOD ADVISORY IS IN EFFECT UNTIL TUESDAY AFTERNOON FOR THE SPRAGUE RIVER NEAR BEATY AFFECTING KLAMATH COUNTY DUE TO RAIN AND SNOW MELT.
• A FLOOD WARNING IS IN EFFECT FOR THE SILVIES RIVER NEAR BURNS AFFECTING HARNEY  COUNTY UNTIL   WEDNESDAY AFTERNOON DUE TO RAIN AND SNOW MELT.
• A FLOOD ADVISORY IS IN EFFECT FOR BAKER COUNTY UNTIL 6 PM MDT TUESDAY DUE TO RAIN AND SNOW MELT.

HEALTH ADVISORIES:

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

• Mostly cloudy with AM rain, showers and a bit cooler this afternoon (0.25 in. of rain possible), a slight (20%) chance of evening showers, partly cloudy late tonight (under 0.10 in. of rain possible),
• Partly cloudy with patchy AM fog, partly cloudy and a bit warmer Tuesday afternoon, mostly clear at night,
• Mostly sunny and a bit warmer Wednesday, then partly cloudy Wednesday night.
• highs 57-65 lows 42-46.
• Partly cloudy and a bit warmer Thursday, partly cloudy Thursday night,
• Some AM clouds, mostly sunny and a bit warmer Friday afternoon, mostly clear at night,
• Mostly sunny and a bit warmer Saturday and Sunday, clear Saturday night.
• highs 74-88 lows 47-57. (seasonal averages high 67 low 43)

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Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA

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Eugene-Springfield Pollen Count:

Forecast for the Umpqua Valley including Roseburg:

• AM showers, a bit cooler with showers likely (70%) and a slight (20%) chance of thunderstorms this afternoon (0.10 in. of rain possible), a (30%) chance of evening showers and a slight (20%) chance of thunderstorms late tonight (under 0.10 in. of rain possible),
• Partly cloudy and warmer Tuesday, mostly clear at night,
• Some AM clouds, sunny and a bit warmer Wednesday afternoon, then partly cloudy Wednesday night.
• highs 56-72 lows 43-48.
• Mostly sunny and a bit warmer Thursday, mostly clear Thursday night,
• Sunny and a bit warmer Friday and Saturday, clear both nights,
• AM sun, then partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Sunday afternoon.
• highs 77-89 cooling to 87 Sunday lows 50-57. (seasonal averages high 70 low 47)

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Forecast for The South Oregon Coast Including Coos Bay and North Bend

• Mostly cloudy with AM showers likely (70%), a good (50%) chance of showers this afternoon (0.10 in. of rain possible), partly cloudy tonight with a slight (20%) chance of evening inland showers,
• Some AM clouds, sunny and warmer Tuesday afternoon, mostly clear at night,
• Some AM clouds, sunny Wednesday afternoon, partly cloudy in the evening, then mostly cloudy late Wednesday night.
• highs 56-62 lows 42-44.
• Mostly sunny and a bit warmer Thursday, mostly clear Thursday night,
• Sunny and a bit warmer Friday and Saturday, clear both nights,
• Sunny start, then partly cloudy and a bit warmer Sunday afternoon.
• highs 65-77 lows 45-54. (seasonal averages high 60 low 47)

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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:

• Mostly cloudy with AM rain and snow showers, rain showers and snow showers likely (70%) with a slight (20%) chance of thunderstorms and a bit cooler this afternoon (0.50 in. of rain possible, small hail possible, 2 in. of snow possible), a good (50%) chance of evening rain and snow showers and a slight (20%) of thunderstorms, just mostly cloudy late tonight (0.25 in. of rain possible, evening small hail possible, 1 in. of snow possible),
• Partly cloudy with slight (20%) chance of showers and a bit warmer Tuesday afternoon, a slight (20%) chance of evening showers, just partly cloudy late at night,
• Mostly sunny start, partly cloudy and a bit warmer with a slight (20%) chance of showers and thunderstorms Wednesday afternoon, a slight (20%) chance of evening showers, then just cloudy late Wednesday night.
• snow level 4,500 ft. today and tonight, 6,000 ft. Tuesday afternoon, 6,000 ft. Tuesday night, 6,500 ft. Wednesday, then 7,000 ft Wednesday night.
• highs 40-55 lows 28-35.
• Some AM clouds, sunny and a bit warmer Thursday afternoon, partly cloudy Thursday night,
• Mostly sunny and a bit warmer Friday, mostly clear at night,
• Mostly sunny and a bit warmer Saturday, clear Saturday night,
• AM sun, then partly cloudy with a (30%) chance of showers Sunday afternoon.
• snow level free air freezing level 9,000 ft. Thursday, 10,000 ft. Thursday night,12,000 ft. Friday, 13,000 ft. Friday night, 14,000 ft. Saturday and Saturday night, then above 8,000 ft. Sunday.
• highs 62-72 lows 38-48.