Jun
28.
An Upper Level High Pressure Ridge (“Arch” Shape) takes over beginning a warming trend. The graphics for days 1-3 show no frontal systems moving through the Pacific Northwest. The graphics for days 3-7 Tuesday through Saturday show a frontal system pushing into the Pacific Northwest Thursday and another front offshore next Saturday.
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ADVISORIES:
- A HEAT ADVISORY IS IN EFFECT FROM 9 AM MONDAY UNTIL 9 PM TUESDAY FOR THE LOWER COLUMBIA BASIN OF OREGON.
- A HEAT ADVISORY IS IN EFFECT FROM 9 AM MONDAY UNTIL 9 PM TUESDAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON.
- A HEAT ADVISORY IS IN EFFECT FROM 11 AM MDT UNTIL 8 PM MDT TUESDAY FOR THE OREGON LOWER TREASURE VALLEY.
HEALTH ADVISORIES:
- A RECREATION HEALTH ADVISORY HAS BEEN ISSUED FOR LAKE BILLY CHINOOK, PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES SUCH AS WATER SKIING OR POWER BOATING IN AREAS WHERE BLOOMS ARE PRESENT AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER, OREGON HEALTH OFFICIALS SAID. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, THOUGH THOSE WITH SKIN SENSITIVITIES MAY DEVELOP A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGED PEOPLE TO VISIT LAKE BILLY CHINOOK FOR ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BIKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY, WHICH 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.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 34 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 9 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 33 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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Eugene-Springfield Area Pollen count:
GRASS: 25 HIGH
TREES: 0 ABSENT
WEEDS: 0 ABSENT
Measured 6.27.25
Data courtesy of Oregon Allergy Associates.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Clear tonight,
- Sunny and a bit warmer Sunday, clear Sunday night,
- Sunny and a bit warmer Monday, mostly clear in the evening, partly cloudy late Monday night,
- Mostly sunny and a bit cooler Tuesday, mostly clear in the evening, then partly cloudy late at night,
- lows 53-57 highs 90-93 cooling back to 90 Tuesday.
- Sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Mostly sunny and a bit cooler Thursday, mostly clear at night,
- Sunny Friday (Independence Day), mostly clear Friday night,
- Then sunny Saturday.
- highs 84-82 lows near 52. (seasonal averages high 79 low 50).
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Forecast for the Umpqua Valley including Roseburg:
- Clear tonight,
- Sunny and a bit warmer Sunday, clear Sunday night,
- Mostly sunny with a slight (20%) chance of thunderstorms and a bit warmer Monday afternoon, partly cloudy with a slight (20%) chance of evening thunderstorms, mostly cloudy with a slight (20%) chance of thunderstorm at late at night,
- Some AM clouds with a slight (20%) chance of thunderstorms, partly cloudy and a bit cooler Tuesday afternoon, mostly clear in the evening, then partly cloudy late Tuesday night,
- lows 59-63 cooling to 60 Tuesday night highs 92-94 cooling 92 Tuesday. .
- Mostly sunny and a bit cooler Wednesday and Thursday, mostly clear both nights,
- Mostly sunny and a bit warmer Friday (Independence Day), mostly clear Friday night,
- Then mostly sunny and a bit cooler Saturday.
- highs 85-83 warming to 85 Friday cooling to 83 Saturday lows 56-55 (seasonal averages high 81 low 55).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear tonight,
- Sunny and slightly warmer Sunday, mostly clear in the evening, partly cloudy late Sunday night,
- AM clouds coastal clouds and sunny and a bit cooler Monday afternoon while some AM inland clouds and sunny with a slight (20%) chance of inland thunderstorms and a bit cooler Monday afternoon, partly cloudy in the evening with a slight (20%) chance of inland evening thunderstorms, just mostly cloudy late at night,
- Partly cloudy and a bit cooler Tuesday, then partly cloudy Tuesday night.
- lows 52-55 cooling back to 52 Tuesday night highs near 69.
- Partly cloudy and a bit cooler Wednesday, partly cloudy Wednesday night,
- Partly cloudy Thursday, partly cloudy at night,
- Partly cloudy Friday (Independence Day) and Friday night,
- Then partly cloudy Saturday.
- highs near 69 lows 50-52.
- (seasonal averages high 65 low 53). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Clear tonight,
- Sunny and warmer Sunday, clear Sunday night,
- Sunny and warmer Monday, partly cloudy with a (30%) chance of evening, mostly cloudy with a slight (20%) chance of showers late at night,
- Mostly sunny and a bit cooler with a slight (20%) chance of showers Tuesday, partly cloudy with a slight (20%) chance of showers Tuesday night.
- free air freezing level 14,000 ft.rising to 15,000 ft. tonight, 15,000 ft. Sunday through Monday, then snow level above 8,000 ft. Monday night through Tuesday night.
- lows 47-55 cooling to 52 Tuesday night highs 84-87 cooling to 82 Tuesday.
- Mostly sunny and cooler Wednesday, partly cloudy Wednesday night,
- Sunny and a bit cooler Thursday, mostly clear at night,
- Sunny and a bit warmer Friday (Independence Day), mostly clear Friday night,
- Then sunny and a bit cooler Saturday.
- free air freezing level 14,000 ft. Wednesday through Friday night, then 13,000 ft.Saturday.
- highs 72-70 warming to 73 Friday cooling to 72 Saturday lows near 45.
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