Jun
30.
An Upper Level High Pressure Ridge (“Arch” Shape) over the desert Southwest continues the warming trend. The graphics for days 1-3 show no frontal systems moving through the Pacific Northwest until a front moves in Wednesday. The graphics for days 3-7 Thursday through Monday show a frontal system pushing into the Pacific Northwest Thursday and another front between Saturday and Sunday.
Note: Eugene set a record high today reaching 96 degrees.
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ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT FROM 2 PM UNTIL 9 PM TUESDAY FOR ABUNDANT LIGHTNING FOR THE CENTRAL MOUNTAINS OF OREGON.
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM TUESDAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM TUESDAY FOR THE LOWER COLUMBIA BASIN OF OREGON.
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM TUESDAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, AND NORTH CENTRAL 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 43 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 17 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 40 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: 45 HIGH
TREES: 0 LOW
WEEDS: 0 LOW
Measured 6.30.25
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:
- Partly cloudy this evening, mostly cloudy late tonight,
- Mostly sunny and a bit cooler Tuesday, partly cloudy in the evening, mostly clear late Tuesday nights,
- Sunny and a bit cooler Wednesday, mostly clear in the evening, partly cloudy late at night,
- Mostly sunny and a bit cooler Thursday, mostly clear Thursday night.
- lows 58-52 highs 90-82.
- Mostly sunny Friday (Independence Day), mostly clear Friday night,
- Sunny Saturday, mostly clear at night,
- Then sunny and a bit warmer Sunday and Monday, mostly clear Sunday night.
- highs 82-87 lows 49-52. (seasonal averages high 80 low 50).
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Forecast for the Umpqua Valley including Roseburg:
- Becoming mostly cloudy this evening with a slight (20%) chance of thunderstorms (gusty winds possible), partly cloudy late tonight,
- Sunny and a bit cooler Tuesday, mostly clear in the evening, partly cloudy late Tuesday night,
- Mostly sunny and a bit cooler Wednesday, mostly clear in the evening, partly cloudy late at night,
- Some AM clouds, sunny and a bit cooler Thursday, then mostly clear Thursday night.
- lows 63-55 highs 92-84. .
- Mostly sunny and a bit cooler Friday (Independence Day), mostly clear Friday night,
- Mostly sunny and a bit warmer Saturday and Sunday, mostly clear both nights,
- Then sunny and a bit warmer Monday.
- highs 83-89 lows 54-57 (seasonal averages high 82 low 55).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy with a slight (20%) chance of inland evening thunderstorms, just mostly cloudy with patchy fog late tonight,
- AM clouds, sunny and a bit cooler Tuesday afternoon, partly cloudy in the evening, mostly cloudy late Tuesday night,
- Mostly cloudy start, sunny and a bit warmer Wednesday afternoon, partly cloudy in the evening, mostly cloudy late at night,
- Then partly cloudy and a bit cooler Thursday and Thursday night.
- lows 54-52 cooling to 50 Thursday night highs 69-70 cooling back to 69 Thursday.
- Partly cloudy and a bit cooler Friday (Independence Day) and Friday night,
- Mostly sunny and a bit warmer Saturday, mostly clear at night,
- Mostly sunny and a bit warmer Sunday, mostly clear in the evening, partly cloudy late Sunday night,
- Some AM clouds, then sunny and a bit warmer Monday afternoon.
- highs 68-72 lows 50-52.
- (seasonal averages high 65 low 53). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Partly cloudy with a slight (20%) chance of evening showers, mostly cloudy late tonight,
- Mostly sunny and a bit cooler with a slight (20%) chance of thunderstorms Tuesday afternoon, mostly cloudy with a slight (20%) chance of evening thunderstorms, mostly cloudy with a (40%) chance of showers and a slight (20%) chance of thunderstorms late Tuesday night (under 0.10 in. of rain possible),
- Sunny and cooler Wednesday, mostly clear in the evening, partly cloudy late at night,
- Sunny and a bit cooler Thursday, then mostly clear Thursday night.
- snow level above 8,000 ft. tonight, free air freezing level 15,000 ft. Tuesday, snow level above 8,000 ft. Tuesday night, free air freezing level 14,000 ft. Wednesday, 14,000 ft. falling to 13,000 ft. Wednesday night, 13,000 ft. Thursday, then 12,000 ft. Thursday night.
- lows 56-44 highs 82-69.
- Sunny and a bit warmer Friday (Independence Day), mostly clear Friday night,
- Sunny and a bit warmer Saturday through Monday, mostly clear each night.
- free air freezing level 12,000 ft. Friday through Saturday, 13,000 ft. Saturday night, then 14,000 ft. Sunday through Monday.
- highs 70-78 lows 44-47.
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