Here is my weekly weather quiz question. What is the “Lifted Index?

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An Upper Level Low  and surface low with it associated cold front are sliding down the California coast keeping the flow of coastal moisture aimed our way. The graphics for days 1-3  show the frontal system, as described above,  moving southward tonight. The graphics for days 3-7  Monday through next Friday show a quiet weather pattern, but a parade of fronts can be seen offshore to our northwest.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 28 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 28 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 NEXT WEDNESDAY MORNING FOR THE JOHN DAY RIVER AT SERVICE CREEK AFFECTING WHEELER COUNTY.
• A FLOOD WARNING IS IN EFFECT FOR THE SPRAGUE  RIVER NEAR BEATTY AFFECTING KLAMATH COUNTY UNTIL EARLY SUNDAY MORNING DUE TO SNOW MELT.
• A FLOOD WARNING IS IN EFFECT FOR THE SILVIES RIVER NEAR BURNS AFFECTING HARNEY  COUNTY UNTIL LATE NEXT MONDAY NIGHT DUE TO SNOW MELT.
• A FLOOD ADVISORY IS IN EFFECT FOR BAKER COUNTY DUE TO RAIN AND SNOW MELT UNTIL 5 PM MDT SUNDAY.

HEALTH ADVISORIES:

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

• Mostly cloudy with a slight (20%) chance of rain tonight with patchy fog late (under 0.10 in. of rain possible),
• Mostly cloudy with patchy AM fog, a good (50%) chance of showers Saturday (0.10 in. of rain possible), a slight (20%) chance of showers Saturday night (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of AM showers, a good (50%) chance of showers Sunday afternoon, a good (50%) chance of evening showers, a good (50%) chance of rain late at night (under 0.10 in. of rain possible),
• Mostly cloudy with AM rain likely (70%), showers likely (70%) with a slight (20%) chance of thunderstorms Monday afternoon, a (40%) chance of evening showers, then partly cloudy late Monday night.
• lows 47-42 warming to 44 Sunday night cooling to 42 Monday night highs near 60.
• AM clouds and sun with a slight (20%) chance of showers and a bit warmer Tuesday, partly cloudy Tuesday night,
• Partly cloudy and a bit warmer Wednesday, partly cloudy at night,
• Partly cloudy and a bit warmer Thursday, mostly clear Thursday night,
• Then mostly sunny and a bit warmer Friday.
• highs 65-76 lows 42-46. (seasonal averages high 66 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:

• Mostly cloudy with evening showers likely (70%), a good (50%) chance of showers late tonight (0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) Saturday afternoon (under 0.10 in. of rain possible), a (30%) chance of showers Saturday night (0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of showers and a bit warmer Sunday, evening showers likely (70%), rain late at night (0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of AM showers, a bit cooler with showers likely (70%) Monday afternoon, then a (30%) chance of showers Monday night.
• lows 46-42 warming to 46 Monday night highs 62-63 c0oling to 60 Monday.
• Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy a bit warmer with a slight (20%) chance of showers Tuesday afternoon, partly cloudy Tuesday night,
• Partly cloudy and a bit warmer Wednesday, partly cloudy at night,
• Mostly sunny and a bit warmer Thursday, mostly clear Thursday night,
• Then sunny and a bit warmer Friday.
• highs 66-80 lows 45-49. (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 a (40%) chance of showers tonight (under 0.10 in. of rain possible),
• Mostly cloudy and a bit warmer with a (30%) chance of showers Saturday (under 0.10 in. of rain possible), a slight (20%) chance of showers Saturday night (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of showers Sunday, evening showers, rain late at night (0.10 in. of rain possible),
• Mostly cloudy with a good (50%) of AM rain, a good (50%) chance of showers and a bit warmer Monday afternoon, then a slight (20%) chance of showers Monday night.
• lows 45-42 warming back to 45 Sunday night cooling back to 42 Monday night highs near 58.
• Mostly cloudy with a slight (20%) chance of AM showers, just partly cloudy and a bit warmer Tuesday, partly cloudy Tuesday night,
• Partly cloudy and a bit warmer Wednesday and at night,
• Mostly sunny and a bit warmer Thursday, mostly clear Thursday night,
• Then sunny and a bit warmer Friday.
• highs 60-67 lows 43-45. (seasonal averages high 59 low 47)

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

• Mostly cloudy with a good (50%) chance of rain with a good (50%) chance of snow late tonight (0.25 in. of rain possible, little or no snow accumulation expected),
• Mostly cloudy with a good (50%) chance of AM rain and snow showers, showers with a slight (20%) chance of thunderstorms and a bit warmer Saturday afternoon (0.25 in. of rain possible, 1 in. of snow possible), evening showers and snow showers likely (70%) with a slight (20%) chance of evening thunderstorms, a good (50%) chance of rain and snow showers late Saturday night (0.25 in. of rain possible, 1 in. of snow possible),
• Mostly cloudy with a good (50%) chance of AM snow showers, a good (50%) chance of showers and a bit warmer Sunday afternoon (little or no snow accumulation expected), evening showers likely (70%), rain and snow likely (70%) late at night,
• Mostly cloudy AM rain and snow likely (70%), showers and a bit cooler with a slight (20%) chance of thunderstorms Monday afternoon, evening rain and snow showers likely (70%), then a slight (20%) chance of rain and snow showers  late Monday night.
• snow level 5,000 ft. tonight and Saturday, 4,500 ft. Saturday night, 4,000 ft. rising to 5,000 ft. Sunday afternoon, then 5,000 ft. Sunday night through Monday night.
• lows 32-28 warming to 32 Sunday night cooling to 29 Monday night highs 42-44 cooling to 42 Monday.
• Clouds and sun with slight (20%) chance of AM rain and snow showers, a good (50%) chance of showers and a bit warmer Tuesday afternoon, partly cloudy with a (30%) chance of evening showers, just partly cloudy late Tuesday night,
• Partly cloudy and a bit warmer with a slight (20%) chance of showers Wednesday afternoon and evening, just partly cloudy late at night,
• Some AM clouds, sunny and a bit warmer Thursday afternoon, mostly clear Thursday night,
• Then mostly sunny and a bit warmer Friday.
• snow level 5,000 ft. Tuesday, 5,500 ft. Tuesday night, 6,000 ft. Wednesday, 6,500 ft Wednesday night,free air freezing level 9,000 ft. Thursday, 11,000 ft. Thursday night, then 13,000 ft. Friday.
• highs 47-65 lows 32-36.

5.3.23