Tim Chuey Weather

September 6, 2023

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

NONE AT THIS TIME.

HEALTH ADVISORIES

A RECREATIONAL USE HEALTH ADVISORY HAS BEEN EXPANDED FOR THE AREA FROM THE ROSS ISLAND LAGOON TO RIVERPLACE MARINA IN MULTNOMAH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS CATCH AND RELEASE FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS. DRINKING WATER FROM THE LAKE IS ESPECIALLY DANGEROUS.
A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR THE WILLAMETTE RIVER FROM ROSS ISLAND DOWNSTREAM (NORTH) TO THE AREA NEAR CATHEDRAL PARK IN PORTLAND, IN MULTNOMAH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.DO NOT DRINK THE WATER.
A RECREATIONAL USE HEALTH ADVISORY ICONTINUES IN EFFECT FOR ARRONS LAKE, BUT HAS BEEN LIFTED FOR PETE’S SLOUGH AND STURGEON LAKE ON SAUVIE ISLAND DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.
A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR AGENCY LAKE AND EXTENDED THE ADVISORY FOR THE SOUTHERN PORTION OF UPPER KLAMATH LAKE, FROM HOWARD’S BAY SOUTH TO THE LINK RIVER DAM IN KLAMATH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE RESERVOIR WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.
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.

THE WEATHER PATTERN

An Upper Level Low Pressure Trough remains in control. Continued onshore airflow continues normal temperatures. The graphics for days 1-3 show a weak disturbance fell apart as it moved into Oregon. Another weak cold front moves in behind it. The graphics for days 3-7 Saturday through Wednesday show a cold front will push through the Pacific Northwest Monday with another behind it moving in next Wednesday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

Partly cloudy tonight,
A mix of clouds and sun and a bit cooler Thursday, partly cloudy Thursday night,
Mostly sunny and a bit warmer Friday, mostly clear at night,
Mostly sunny and a bit warmer Saturday, then mostly clear Saturday night.
lows 52-50 warming back to 53 Saturday night highs 79-84.
Partly cloudy with a slight (20%) chance of showers and a bit cooler Sunday afternoon, partly cloudy with a slight (20%) chance of showers Sunday night,
Partly cloudy and a bit cooler Monday and at night,
Mostly sunny Tuesday, mostly clear Tuesday night,
Then mostly sunny and a bit warmer Wednesday.
highs 82-80 warming back to 82 Wednesday lows 55-52 (seasonal averages high 82 low 49)

Forecast for the Umpqua Valley including Roseburg:

Mostly clear tonight,
Some AM clouds and patchy fog, sunny Thursday afternoon, mostly clear Thursday night,
Sunny and a bit warmer Friday, mostly clear at night,
Mostly sunny and a bit warmer Saturday, then mostly clear Saturday night.
lows 54-56 cooling back to 54 Saturday night highs 82-86.
Partly cloudy and a bit cooler with a slight (20%) chance of showers Sunday afternoon, partly cloudy Sunday night,
Partly cloudy and a bit cooler Monday, mostly clear at night,
Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
Then mostly sunny and a bit warmer Wednesday.
highs near 84-82 warming to 86 Wednesday lows 58 cooling to 53 Tuesday night. (seasonal averages high 83 low 54)

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

Partly cloudy this evening, mostly cloudy with patchy fog late tonight,
AM clouds with patchy fog, sunny and a bit warmer Thursday afternoon, mostly clear in the evening, partly cloudy late Thursday night,
AM clouds, sunny Friday afternoon, mostly clear at night,
Mostly sunny and a bit warmer Saturday, then mostly clear Saturday night.
lows 55-53 warming back to 55 Saturday night highs 72-74.
Partly cloudy with a slight (20%) chance of showers Sunday, mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy Sunday night,
Partly cloudy Monday, mostly clear at night,
Mostly sunny Tuesday, mostly clear Tuesday night,
Then mostly sunny Wednesday.
highs near 75 lows 58-55 (seasonal averages high 67 low 53)

Forecast for the Northern Oregon Cascades including Willamette Pass:

Clear tonight,
Mostly sunny Thursday, mostly clear Thursday night,
Mostly sunny and a bit warmer Friday, mostly clear at night,
Mostly sunny and a bit warmer Saturday, then mostly clear Saturday night.
free air freezing level 13,000 ft. tonight, 12,000 ft. Thursday and Thursday night, 12,000 ft. rising to 13,000 ft. Friday afternoon, 13,000 ft. falling to 12,000 ft. late Friday night, then 13, 000 ft. Saturday and Saturday night.
lows 42-47 highs 68-74.
Mostly sunny start, partly cloudy and a bit cooler Sunday afternoon, a slight (20%) chance of evening showers, just partly cloudy late Sunday night,
Partly cloudy Monday and Monday night,
Mostly sunny and a bit cooler Tuesday, mostly clear Tuesday night,
Then mostly sunny and a bit warmer Wednesday.
free air freezing level 13,000 ft. Sunday, snow level above 8,000 ft. late Sunday night, then free air freezing level 14,000 ft. Monday through Wednesday.
highs 72-70 warming back to 72 Wednesday lows near 46-43.