Here is my new weekly weather quiz question. What is a “Lightning Channel?
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An Upper Level Low is moving eastward and will weaken the moisture flow to the Pacific Northwest. A surface low with it associated cold front are shown 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.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 31 in the good category measuring Ozone.
Oakridge: The Air Quality Index is 7 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 30 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 THURSDAY MORNING FOR THE JOHN DAY RIVER AT SERVICE CREEK AFFECTING WHEELER COUNTY DUE TO RAIN AND SNOW MELT.
- A FLOOD WARNING IS IN EFFECT FOR THE SILVIES RIVER NEAR BURNS AFFECTING HARNEY COUNTY UNTIL WEDNESDAY EVENING 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.
- A FLOOD ADVISORY IS IN EFFECT UNTIL 7:45 PM THIS EVENING FOR CLACKAMAS COUNTY.
HEALTH ADVISORIES:
- A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER BAR. POOLS IN THE BEDROCK ALONG THE RIVERS EDGE ARE KNOWN TO DEVELOP BLUE-GREEN ALGAE (CYANOBACTERIAL) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED ALONG SEVERAL ACCESS AREAS ALONG THE RIVER.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Mostly cloudy with a good (50%) chance of evening showers and a slight (20%) chance of thunderstorms (small hail possible), becoming partly cloudy late tonight (under 0.10 in. of rain possible, more in storms),
- Partly cloudy and warmer Tuesday, mostly clear Tuesday night,
- Mostly sunny and a bit warmer Wednesday, partly cloudy at night,
- Partly cloudy Thursday, then partly cloudy Thursday night.
- lows 42-47 highs 65-72.
- Partly cloudy and a bit warmer Friday, mostly clear Friday night,
- Mostly sunny and a bit warmer Saturday, clear at night,
- Mostly sunny and a bit warmer Sunday, mostly clear Sunday night,
- Then mostly sunny and a bit cooler with a slight (20%) chance of showers Monday afternoon.
- highs 80-93 cooling to 86 Monday lows 52-59. (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:
Grass Pollen: Moderate (5)
Tree Pollen: High (182)
Last counted: 5.7.23
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with a good (50%) chance of evening showers and a slight (20%) chance of thunderstorms, a good (50%) chance of showers tonight (under 0.10 in. of rain possible),
- Some AM clouds, sunny and warmer Tuesday, mostly clear with a slight (20%) chance of evening showers, just mostly clear late Tuesday night,
- Mostly sunny and a bit warmer Wednesday with a slight (20%) chance of afternoon showers, partly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late at night,
- Mostly cloudy start, sunny and a bit warmer Thursday afternoon, then mostly clear Thursday night.
- lows 43-49 highs 68-75.
- Mostly sunny and a bit warmer Friday, clear Friday night,
- Sunny and a bit warmer Saturday, clear at night,
- Sunny and a bit warmer Sunday, mostly clear Sunday night,
- Some AM clouds, then mostly sunny and a bit cooler with a slight (20%) chance of showers Monday afternoon.
- highs 83-95 cooling to 87 Monday lows 54-60. (seasonal averages high 70 low 47)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend
- Partly cloudy with a slight (20%) chance of evening coastal showers while a slight (20%) chance of inland evening showers and a slight (20%) chance of thunderstorms and a slight (20%) chance of inland showers tonight,
- Some AM clouds, sunny and warmer Tuesday afternoon, mostly clear Tuesday night,
- Sunny and a bit cooler Wednesday, partly cloudy in the evening, mostly cloudy late at night,
- Partly cloudy and a bit warmer Thursday, then partly cloudy Thursday night.
- lows 42-45 highs 64-62 warming back to 64 Thursday.
- Sunny and a bit warmer Friday and Saturday, clear both nights,
- Sunny and a bit warmer Sunday, mostly clear Sunday night,
- Some AM clouds, then sunny and a bit cooler Monday afternoon.
- highs 67-84 cooling to 72 Monday lows 48-59 cooling to 54 Sunday night. (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 evening showers, snow showers likely (70%) and a slight (20%) of thunderstorms, a slight (20%) chance of showers late tonight (0.25 in. of rain possible, evening small hail possible, 1-3 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 Tuesday night,
- Mostly sunny start, a mix of clouds and sun and a bit warmer with a (40%) chance of showers and a slight (20%) chance of thunderstorms Wednesday afternoon, partly cloudy with a slight (20%) chance of evening showers, just party cloudy late at night,
- Some AM clouds, sunny and a bit warmer Thursday afternoon, then partly cloudy Thursday night.
- snow level 4,500 ft. tonight, 6,000 ft. Tuesday afternoon, 6,500 ft. Tuesday night, 6,000 ft. Wednesday, 7,000 ft. Wednesday night, free air freezing level 9,000 ft. Thursday, then 10,000 ft. Thursday night.
- lows 28-38 highs 50-59.
- Mostly sunny and a bit warmer Friday, mostly clear Friday night,
- Mostly sunny and a bit warmer Saturday, clear at night,
- Mostly sunny and a bit warmer Sunday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Sunday night,
- AM sun, then partly cloudy and a bit cooler a (40%) chance of showers Monday afternoon.
- free air freezing level 11,000 ft. Friday, 13,000 ft. Friday night, 14,000 ft. Saturday, 15,000 ft. Saturday night, 14,000 ft. Sunday, then snow level above 8,000 ft. Sunday night and Monday.
- highs 68-74 cooling to 72 Monday lows 38-48.