Jul
28.
Here is my weekly weather quiz question for the last time. What is a “Monsoon? ” Here is the correct answer. A Monsoon is a thermally driven wind arising from differential heating between a land mass and the adjacent ocean that reverses its direction seasonally.
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An Upper Level Low Pressure Trough (“U” shape) keeps our weather pattern stable with normal temperatures. The graphics for days 1-3 show a cold front pushing through the Pacific Northwest Sunday. The graphics for days 3-7 Tuesday through Saturday show no frontal activity pushing into or through Oregon during the period until a front shows up to our northwest Wednesday through next Friday. So far the smoke has been staying in Eastern Lane County, but if the winds shift that might not be the case.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 25 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 39 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 23 in the Good category measuring Ozone.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON NEXT TUESDAY FOR EASTERN PORTIONS OF LANE COUNTY. THIS DOES NOT INCLUDE THE EUGENE-SPRINGFIELD AREA.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON NEXT TUESDAY FOR THE CASCADE FOOTHILLS IN LANE COUNTY AND THE CASCADES IN LANE COUNTY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 11 AM NEXT TUESDAY FOR DESCHUTES COUNTY.
- A RED FLAG WARNING IS IN EFFECT 1 PM UNTIL 8 PM TODAY FOR THE KLAMATH BASIN, AND THE FREMONT-WINEMA NATIONAL FOREST.
- A RED FLAG WARNING IS IN EFFECT FROM 1 PM UNTIL 8 PM TODAY FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE COUNTY AND WESTERN HARNEY COUNTY.
- A FIRE WEATHER WATCH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE COUNTY AND WESTERN HARNEY COUNTY.
- A RED FLAG WARNING IS IN EFFECT FROM 11 AM TODAY UNTIL 8 PM SUNDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE LOWER COLUMBIA BASIN OF OREGON
- A RED FLAG WARNING IS IN EFFECT FROM 1 PM THIS AFTERNOON THROUGH THIS EVENING FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE KLAMATH BASIN, AND THE FREMONT-WINEMA NATIONAL FOREST.
- A FIRE WEATHER WATCH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE KLAMATH BASIN, AND THE FREMONT-WINEMA NATIONAL FOREST.
- A RED FLAG WARNING IS IN EFFECT FROM 1 PM THROUGH 9 PM TODAY FOR GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE BURNS BLM AND THE VALE BLM.
HEALTH ADVISORIES:
- A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR THE WILLAMETTE RIVER NEAR WILLAMETTE COVE 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 IS IN EFFECT FOR ARRONS LAKE, 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.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Mostly sunny today, mostly clear tonight,
- Mostly sunny Sunday, clear at night,
- Sunny and a bit warmer Monday, then clear Monday night.
- highs 85-88 lows 52-50 warming back to 52 Monday.
- Sunny and a bit warmer Tuesday, mostly clear Tuesday night,
- AM sun, partly cloudy and a bit cooler Wednesday, partly cloudy at night,
- Then mostly sunny and a bit warmer Thursday and Friday, mostly clear Thursday night,
- highs 90-88 warming back to 90 Friday lows near 55. (seasonal averages high 86 low 53)
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Eugene-Springfield Pollen Count:
Grass Pollen: Low (2)
Weeds: Low (5)
Tree Pollen: Low (3)
Last counted: 7.25.23
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Some AM clouds, sunny this afternoon, mostly clear and hazy tonight,
- Then sunny and a bit warmer Sunday and Monday, clear both nights.
- highs 85-89 lows near 55.
- Sunny and a bit warmer Tuesday, partly cloudy Tuesday night,
- Partly cloudy and a bit cooler Wednesday, mostly clear at night,
- Mostly sunny and a bit warmer Thursday, mostly clear Thursday night,
- Then sunny Friday.
- highs 92-89 rising to 90 Friday lows near 58 (seasonal averages high 88 low 59)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- AM clouds, sunny and a bit warmer this afternoon with inland afternoon haze, partly cloudy with inland evening haze, mostly cloudy late tonight,
- AM clouds, sunny Sunday afternoon, mostly clear in the evening, mostly cloudy late at night,
- AM clouds, sunny and a bit warmer Monday afternoon, then mostly clear Monday night.
- highs near 75 lows near 55.
- Mostly sunny and a bit cooler Tuesday, partly cloudy in the evening, mostly cloudy late Tuesday night,
- Partly cloudy Wednesday through Thursday night,
- Then sunny Friday.
- highs near 74 lows near 57. (seasonal averages high 67 low 54)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Sunny and hazy a bit cooler today with areas of afternoon and evening smoke, mostly clear tonight,
- Sunny and a bit cooler Sunday, clear at night,
- Sunny and a bit warmer Monday, then clear Monday night.
- free air freezing level 14,000 ft. today, 14,000 ft. falling to 13,000 ft. late tonight, 13,000 ft. Sunday, 13,000 ft. rising to 14,000 ft. late Sunday night, 14,000 ft. Monday, then 15,000 ft. Monday night.
- highs 74-72 warming to 76 Monday lows 43-47.
- Mostly sunny and a bit warmer Tuesday, partly cloudy Tuesday night,
- Partly cloudy and a bit cooler Wednesday, partly cloudy at night,
- Mostly sunny Thursday, mostly clear Thursday night,
- Then sunny Friday.
- free air freezing level 15,000 ft. Tuesday through Wednesday, then 14,000 ft. Thursday through Friday.
- highs 82-78 lows near 50.
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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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