Tim Chuey Weather

September 20, 2022

Note: Weather is a constantly changing phenomenon and weather forecasting is a combination of science, experience, and intuition. The accuracy of any given forecast can chance due to unexpected changes in atmospheric conditions, so there are no guarantees the the actual weather will conform to the projected forecast.

ADVISORIES

AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 11 AM WEDNESDAY FOR LANE COUNTY DUE TO WILDFIRE SMOKE.

HEALTH ADVISORIES

A RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR ALL OF UPPER KLAMATH LAKE IN KLAMATH COUNTY INCLUDING SHOALWATER BAY DUE THE PRESENCE OF A CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOM AND CYANOTOXINS ABOVE RECREATIONAL USE VALUES FOR HUMAN EXPOSURE. PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE WHERE BLOOMS ARE, AS THE MAJOR RISK OF EXPOSURE IS FROM INGESTING WATER. THESE TOXINS ARE NOT ABSORBED THROUGH THE SKIN. HOWEVER, IF YOU HAVE SKIN SENSITIVITIES YOU MAY GET A PUFFY RED RASH. IT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SPECIAL CARE SHOULD BE TAKEN WITH CHILDREN, ESPECIALLY THE YOUNGER ONES, WHEN THEY ARE NEAR THE WATER.
NOTE: A RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR THE WILLAMETTE RIVER NEAR CATHEDRAL PARK IN NORTH PORTLAND DUE THE PRESENCE OF A CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOM AND CYANOTOXINS ABOVE RECREATIONAL USE VALUES FOR HUMAN EXPOSURE. IT HAS BEEN EXPANDED UPSTREAM (SOUTH) TO THE WILLAMETTE COVE AREA NEAR THE SP&S RAILROAD BRIDGE. PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE WHERE BLOOMS ARE, AS THE MAJOR RISK OF EXPOSURE IS FROM INGESTING WATER. THESE TOXINS ARE NOT ABSORBED THROUGH THE SKIN. HOWEVER, IF YOU HAVE SKIN SENSITIVITIES YOU MAY GET A PUFFY RED RASH. IT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SPECIAL CARE SHOULD BE TAKEN WITH CHILDREN, ESPECIALLY THE YOUNGER ONES, WHEN THEY ARE NEAR THE WATER. BLOOMS CAN DEVELOP AND DISAPPEAR ON ANY BODY OF WATER AT ANY TIME, EVEN IN THE FALL AND WINTER IF CONDITIONS ARE FAVORABLE. ONLY A FRACTION OF WATER BODIES IN OREGON ARE MONITORED FOR CYANOBACTERIA, BLOOMS AND TOXINS DURING THE RECREATION SEASON, AND NO MONITORING OR SAMPLING IS PERFORMED ONCE RECREATION SEASON HAS ENDED. IT IS VERY IMPORTANT FOR PEOPLE TO BECOME FAMILIAR WITH SIGNS OF BLOOM, EXPOSURES, AND SYMPTOMS BY VISITING OHA’S CYANOBACTERIA HARMFUL ALGAE BLOOM WEBSITE AT: http://www.healthoregon.org/hab.
A PERMANENT RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR THE SOUTH UMPQUA RIVER AND MAINSTEM UMPQUA RIVER. THE ADVISORY COVERS THE SOUTH UMPQUA RIVER FROM CANYONVILLE DOWNSTREAM TO THE CONFLUENCE OF THE MAINSTEM UMPQUA RIVER, AND THE MAINSTEM UMPQUA RIVER DOWNSTREAM PAST ELKTON TO LAWSON BAR. PEOPLE IN THE BEDROCK ALONG THE RIVERS EDGE ARE ARE KNOWN TO DEVELOP CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED AT SEVERAL ACCESS AREAS ALONG THE RIVER.

THE WEATHER PATTERN

An Upper Level Low Pressure Trough (“U” shape) hovers off the Oregon/ California coastline keeping the chance of showers with us. It spun the air in from the southeast to bring high levels of particulate matter from the Cedar Creek wildfire. It will take a while to clear out. The graphics for days 1-3 show the frontal system that slid through northern California. The graphics for days 3-7 Friday through Tuesday show a frontal system to our northwest next Tuesday.

Forecast for the South Willamette Valley including Eugene-Springfield:

Mostly cloudy with a good (50%) of showers tonight (under 0.10 in. of rain possible),
Mostly cloudy with a good (50%) chance of showers Wednesday and in the evening (under 0.10 in. of rain possible), just mostly cloudy Wednesday night,
Partly cloudy Thursday (Autumnal Equinox 6:03 pm), partly cloudy at night,
Partly cloudy and a bit warmer Friday, then partly cloudy Friday night.
lows 53-48 highs 74-76.
Mostly sunny and a bit warmer Saturday through Monday, mostly clear each night,
Mostly sunny start, then partly cloudy and a bit cooler Tuesday afternoon.
highs 82-85 cooling back to 82 Tuesday lows 50-52. (Seasonal Averages high 77 low 47)

Forecast for the Umpqua Valley including Roseburg:

Cloudy with evening showers likely (70%) and a slight (20%) chance of thunderstorms, a good (50%) chance of showers late tonight (0.10 in. of rain possible),
Mostly cloudy with AM showers likely (70%), showers likely (70%) with a slight (20%) chance of thunderstorms and a bit cooler Wednesday afternoon (0.25 in. of rain possible), a (30%) chance of evening showers (under 0.10 in. of rain possible), just mostly cloudy late Wednesday night,
Some AM clouds, sunny and a bit warmer Thursday afternoon (Autumnal Equinox 6:03 pm), mostly clear at night,
Mostly sunny and a bit warmer Friday, then mostly clear Friday night.
lows 58-50 warming to 52 Friday night highs 70-78.
Mostly sunny and a bit warmer Saturday, mostly clear Saturday night,
Mostly sunny and a bit warmer Sunday and Monday, mostly clear both nights,
AM sun, then partly cloudy Tuesday afternoon.
highs 82-85 cooling to 83 Tuesday lows 53-55. (Seasonal Averages high 79 low 51).

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

Mostly cloudy with a good (50%) chance of coastal showers tonight while evening inland showers likely (70%) and a slight (20%) chance of thunderstorms, then a good (50%) chance of inland showers late tonight (under 0.10 in. of rain possible),
Mostly cloudy with a (40%) chance of showers and a bit warmer Wednesday (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late Wednesday night,
Partly cloudy and warmer Thursday (Autumnal Equinox 6:03 pm) and in the evening, mostly cloudy late at night,
Partly cloudy and warmer Friday, then partly cloudy Friday night.
lows 57-52 highs 69-73.
Sunny and a bit warmer Saturday, mostly clear Saturday night,
Mostly sunny Sunday, mostly clear in the evening, partly cloudy late at night,
Sunny Monday, partly cloudy Monday night,
Then partly cloudy Tuesday.
highs near 75 lows near 54. (Seasonal Averages high 67 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

Mostly cloudy with evening showers likely (70%) and a slight (20%) chance of thunderstorms, showers likely (70%) late tonight,
Mostly cloudy with a AM showers, showers with a slight (20%) chance of thunderstorms and a bit cooler Wednesday afternoon, cloudy with evening showers likely (70%) and a slight (20%) chance of thunderstorms, a slight (20%) chance of showers late Wednesday night (0.10 in. of rain possible),
AM clouds and sun, mostly sunny and a bit warmer Thursday afternoon (Autumnal Equinox 6:03 pm), mostly clear at night,
Mostly sunny and a bit warmer Friday, then partly cloudy Friday night.
snow level above 8,000 ft. tonight through Wednesday night, free air freezing level 10,000 ft. rising to 12,000 ft. late Thursday night, then 13,000 ft. Friday and Friday night.
lows 42-37 warming back to 42 Friday night highs 52-63.
Mostly sunny and a bit warmer Saturday and Sunday, mostly clear both nights,
Mostly sunny and a bit warmer Monday, mostly clear Monday night,
AM sun, then partly cloudy and a bit cooler Tuesday afternoon.
free air freezing level 14,000 ft. rising to 15,000 ft. Saturday afternoon, 15,000 ft. Saturday night and Sunday, 14,0000 ft. Sunday night through Monday night, then 13,000 ft. Tuesday.
highs 68-76 cooling to 73 Tuesday lows 44-47.

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For all of your Eugene-Springfield and Lane County News, Weather, and Sports go to: EugeneDailyNews.com

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8/ 22 Plenty of sunshine, but cooler to start your workweek today.

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

Becoming mostly cloudy late tonight,
Some AM clouds, sunny and a bit warmer Friday afternoon, clear in the evening, partly cloudy late Friday night,
Mostly cloudy start, partly cloudy and slightly cooler Saturday afternoon, mostly clear at night,
Mostly sunny Sunday, then mostly clear Sunday night.
lows 54-56 cooling back to 54 Sunday night highs 70-69.
Mostly sunny and a bit warmer Monday, mostly clear Monday night,
Partly cloudy and slightly cooler Tuesday, partly cloudy at night,
Then partly cloudy Wednesday through Thursday.
highs 73-72 lows 54-56 cooling back to 54 Wednesday night. (Seasonal Averages high 66 low 54)

Forecast for the Northern Oregon Cascades including Willamette Pass:

Mostly clear tonight,
Mostly sunny and a bit cooler Friday, clear Friday night,
Sunny and a bit warmer Saturday, mostly clear at night,
Some AM clouds, mostly sunny and a bit cooler Sunday, then clear Sunday night.
free air freezing level 15,000 ft. falling to 14,000 ft. late tonight, 14,000 ft. rising to 15,000 ft. Friday afternoon, 15,000 ft. Friday night through Sunday, then 16,000 ft. Sunday night.
lows 49-47 highs 74-72 warming back to 74 Sunday.
Sunny and a bit warmer Monday, clear Monday night,
Sunny Tuesday, mostly clear at night,
Then mostly sunny and a bit cooler Wednesday and Thursday, mostly clear Wednesday night.
free air freezing level 16,000 ft. Monday through Thursday.
highs 80-75 lows 53-50.

Tim Chuey Weather

ADVISORIES

HEALTH ADVISORIES

THE WEATHER PATTERN

Forecast for the South Willamette Valley including Eugene-Springfield:

Forecast for the Umpqua Valley including Roseburg:

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

Forecast for the Northern Oregon Cascades including Willamette Pass:

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

Forecast for the Northern Oregon Cascades including Willamette Pass: