Jul
18.
Here is my new weekly weather quiz question. What is “Model Output Statistics (MOS)? ”
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An Upper Level High Pressure Ridge (“Arch” shape) will continue the onshore airflow through the Pacific Northwest, then slow warming will take place. The graphics for days 1-3 show a weak disturbance (dashed line) moved through Monday helping to increase onshore airflow and cooling. The graphics for days 3-7 Friday through Tuesday show a cold front pushing through Oregon between Friday and next Saturday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 41 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 40 in the Good category measuring Ozone.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES
- A RED FLAG WARNING IS IN EFFECT UNTIL 7 PM THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE WILLAMETTE VALLEY.
- A RED FLAG WARNING IS IN EFFECT FROM 1 PM UNTIL 9 PM WEDNESDAY FOR THE WESTERN SISKIYOU NATIONAL FOREST.
- A FIRE WEATHER WATCH IS IN EFFECT FROM THURSDAY AFTERNOON THROUGH THURSDAY EVENING FOR THE WESTERN SISKIYOU NATIONAL FOREST.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 11 PM WEDNESDAY FOR CURRY COUNTY AND JOSEPHINE COUNTY.
HEALTH ADVISORIES:
- A PUBLIC HEALTH ADVISORY HAS BEEN ISSUED FOR UNSAFE LEVELS OF FECAL BACTERIA IN OCEAN WATERS AT TOLOVANA STATE PARK BEACH IN CLATSOP COUNTY. PEOPLE SHOULD AVOID DIRECT CONTACT WITH THE WATER IN THIS AREA UNTIL THE ADVISORY IS LIFTED. UNSAFE LEVELS OF FECAL BACTERIA CAN CAUSE DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS, AND OTHER ILLNESSES. CHILDREN, ELDERLY, AND THOSE WITH A COMPROMISED IMMUNE SYSTEM SHOULD USE EXTRA CAUTION AS THEY ARE MORE VULNERABLE TO TO ILLNESSES FROM WATERBORNE BACTERIA. VISITORS SHOULD AVOID WADING IN AREA CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER, AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN. LEVELS OF FECAL BACTERIA TEND TO BE HIGHER IN THESE TYPES OF WATER SOURCES.
- A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT 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 THE GALESVILLE RESERVOIR 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:,
- Clear tonight,
- Sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Mostly sunny and a bit cooler Thursday, clear at night,
- Sunny and a bit warmer Friday, then clear Friday night.
- lows near 54 highs 92-89 warming to 90 Friday.
- Sunny and a bit cooler Saturday, clear Saturday night,
- Mostly sunny and a bit cooler Sunday and Monday, mostly both nights,
- Then mostly sunny and a bit warmer Tuesday.
- highs 88-84 warming to 86 Tuesday lows near 53. (seasonal averages high 85 low 52)
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Eugene-Springfield Pollen Count:
Grass Pollen: Low (3)
Weeds: Low (3)
Tree Pollen: Absent (0)
Last counted: 7.16.23
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Clear with haze late tonight,
- Sunny and hazy and a bit warmer Wednesday, clear and hazy late Wednesday night,
- Sunny Thursday, clear at night,
- Sunny Friday, clear Friday night.
- lows near 58 highs near 92.
- Sunny and a bit cooler Saturday, clear Saturday night,
- Mostly sunny and a bit cooler Sunday and Monday, mostly clear both nights,
- Then sunny and a bit warmer Tuesday.
- highs 92-88 warming to 90 Tuesday lows 59-56 (seasonal averages high 87 low 58)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Clear this evening at the shore and mostly cloudy late tonight while clear inland this evening and mostly cloudy and hazy inland late tonight,
- AM clouds with inland haze, sunny and a bit warmer Wednesday afternoon, partly cloudy with evening inland haze, mostly cloudy late Wednesday night,
- AM clouds, sunny Thursday afternoon, partly cloudy in the evening, mostly cloudy late at night,
- Some AM clouds, sunny Friday afternoon, then partly cloudy Friday night.
- lows near 55 highs near 72.
- Partly cloudy and a bit warmer Saturday, partly cloudy Saturday night,
- Sunny Sunday, partly cloudy at night,
- Mostly sunny Monday, mostly clear Monday night,
- Then sunny Tuesday.
- highs near 74 lows 57-54. (seasonal averages high 66 low 54)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Clear tonight,
- Sunny and a bit warmer Wednesday, clear Wednesday night,
- Sunny and a bit cooler Thursday, then mostly clear at night,
- Sunny and a bit warmer Friday, then mostly clear Friday night.
- free air freezing level 16,000 ft. tonight through Thursday, then 16,000 ft. Thursday night through Friday night.
- lows 52-47 highs 83-80 warming to 82 Friday.
- Sunny and a bit cooler Saturday, clear Saturday night,
- Sunny and a bit cooler Sunday and Monday, mostly clear both nights,
- Then sunny Tuesday.
- free air freezing level 16,000 ft. Saturday though Sunday night, 15,000 ft. Monday, then 14,000 ft. Monday night and Tuesday.
- highs 79-74 lows 46-44.
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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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