Jul
27.
Here is my weekly weather quiz question for the last time. “What is a “Sling Psychometer?” Here is the correct answer. A Sling Psychrometer is an instrument used to measure the water vapor content of the atmosphere in which wet and dry bulb thermometers are mounted on a frame connected to a handle at one end by means of a bearing or a length of chain. The psychrometer is whirled by hand to provide the necessary ventilation to evaporate water from the wet bulb.
____________
An Upper Level Low Pressure Trough is sliding down from Canada. The graphics for days 1-3 show no frontal systems moving through Oregon, but one offshore Monday. The graphics for days 3-7 Tuesday through Saturday show a cold frontal system moving through the Pacific Northwest next Saturday.
________________
Air Quality Index:
Eugene/Springfield: The Air Quality Index is 37 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 51 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 19 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
_______________
ADVISORIES:
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON MONDAY FOR KLAMATH COUNTY AND LAKE COUNTY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON MONDAY FOR DESCHUTES, GRANT, AND WHEELER COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON MONDAY FOR BAKER, HARNEY, AND MALHEUR COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 5 PM TODAY DUE TO WILDFIRE SMOKE FOR EASTERN LANE COUNTY INCLUDING THE LANE COUNTY CASCADE FOOTHILLS AND THE CASCADES OF LANE COUNTY.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 10 PM SUNDAY FOR JACKSON COUNTY.
HEALTH ADVISORIES:
- 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.
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Clear this evening, partly cloudy late tonight,
- Mostly sunny Sunday, mostly clear in the evening, partly cloudy Sunday night,
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain Monday afternoon, mostly cloudy with a slight (20%) chance of rain at night,
- Mostly cloudy start, mostly sunny and a bit warmer Tuesday afternoon, then mostly clear Tuesday night.
- lows 53-60 cooling to 56 Tuesday night highs 85-83 warming back to 85 Tuesday.
- Sunny and a bit warmer Wednesday Thursday, clear both nights,
- Sunny Friday, mostly clear Friday night,
- Then sunny and a bit cooler Saturday.
- highs 95-92 lows near 57. (seasonal averages high 86 low 53)
__________
EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: MODERATE (5)
TREES: ABSENT (0)
WEEDS: ABSENT (0)
Last Measured 7.25.24
Data courtesy of Oregon Allergy Associates.
________________
Forecast for the Umpqua Valley including Roseburg:
- Mostly clear through late evening, partly cloudy late tonight,
- Some AM clouds, sunny and a bit warmer Sunday, mostly clear Sunday night,
- Partly cloudy Monday with a slight (20%) chance of evening rain, just mostly cloudy late at night,
- Mostly cloudy start, partly cloudy and a bit cooler Tuesday afternoon, then mostly clear Tuesday night.
- lows 57-64 highs 87-85 warming to 88 Tuesday.
- Mostly sunny and a bit warmer Wednesday, clear Wednesday night,
- Mostly sunny Thursday, mostly clear at night,
- Mostly sunny and a bit cooler Friday, mostly clear Friday night,
- Some AM clouds, sunny Saturday afternoon.
- highs 93-97 cooling to 95 Saturday lows near 63 (seasonal averages high 88 low 59)
____________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy tonight,
- Some AM clouds, sunny and a bit warmer Sunday, partly cloudy in the evening, mostly cloudy late Sunday night,
- Mostly cloudy and a bit cooler Monday with a slight (20%) chance of coastal rain while mostly cloudy with a slight (20%) chance of AM inland rain Monday night,
- Mostly cloudy with a slight (20%) chance of AM rain, just mostly cloudy Tuesday afternoon, partly cloudy in and partly cloudy inland in the afternoon, then partly cloudy Tuesday night.
- lows 54-57 highs 74-73 warming to 75 Tuesday night.
- Partly cloudy Wednesday, partly cloudy Wednesday night,
- Some AM clouds, sunny and a bit warmer Thursday afternoon, partly cloudy in the evening, mostly cloudy late at night,
- Partly cloudy and a bit cooler Friday, partly cloudy Friday night,
- Then partly cloudy Saturday.
- highs 73-75 cooling back to 73 Friday lows near 55. (seasonal average high 67 low 54)
__________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly clear and hazy tonight,
- Sunny and hazy Sunday, evening haze, mostly clear Sunday night,
- Sunny Monday, mostly cloudy with a slight (20%) chance of rain at night,
- AM clouds, sunny and a bit cooler Tuesday, then mostly clear Tuesday night.
- free air freezing level 13,000 ft tonight and Sunday, 14,000 ft. Sunday night and Monday, snow level above 8,000 ft. Monday night, free air freezing level 14,000 ft. Tuesday, then 16,000 ft. Tuesday night.
- lows 43-48 highs near 72-70.
- Sunny and a bit warmer Wednesday and Thursday, mostly clear both nights,
- Sunny Friday,
- and a bit cooler Saturday.
- free air freezing level snow level above 8,000 ft. Wednesday through Friday,
- highs 76-85 cooling to 83 Saturday lows 53-55.
For all of your Eugene-Springfield and Lane County News, Weather, and Sports go to: EugeneDailyNews.com