Here is my new weekly weather quiz question for the last time. “What is a “Psychrometer?” Here is the correct answer. A Psychrometer is an instrument used to measure the water vapor content of the air; a hygrometer consisting essentially of two similar thermometers with the bulb of one being kept wet so that the cooling that results from evaporation makes it register a lower temperature than the dry one and with the difference between the readings constituting a measure of the dryness of the atmosphere
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An Upper Level High Pressure Ridge (“Arch” shape) is strengthening and has taken over with warmer and dry weather. The graphics for days 1-3 show a frontal systems approaching the Pacific Coast Sunday. The graphics for days 3-7 Tuesday through Saturday show the frontal system that pushs through the Pacific Northwest next Wednesday.
Note: The Vernal Equinox takes place next Tuesday March 19th at 8:06 pm to begin the season of Spring.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 26 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 53 in the Moderate category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- A BEACH HAZARDS STATEMENT IS IN EFFECT FOR DANGEROUS SNEAKER WAVES THROUGH THIS EVENING FOR THE CLATSOP COUNTY COAST AND THE TILLAMOOK COUNTY COAST.
- A BEACH HAZARDS STATEMENT IS IN EFFECT FOR DANGEROUS SNEAKER WAVES THROUGH THIS EVENING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
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.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Sunny and a bit warmer today, clear tonight,
- Mostly sunny and a bit cooler Sunday afternoon (St. Patrick’s Day), mostly clear at night,
- Some AM clouds, mostly sunny Monday afternoon, then mostly clear Monday night.
- highs 73-72 lows 40-45.
- Partly cloudy and a bit cooler Tuesday, partly cloudy with a slight (20%) chance of showers Tuesday night (Vernal Equinox 8:06 pm, Spring Begins),
- A mix of clouds and sun and a bit cooler with a (40%) chance of showers Wednesday, partly cloudy with a good (50%) chance of evening rain, mostly cloudy with a good (50%) of rain Wednesday night,
- Mostly cloudy a bit cooler with with a good (50%) chance of rain Thursday and at night,
- Then mostly cloudy and a bit cooler with showers likely (70%) Friday.
- highs 66-54 lows 44-42. (seasonal averages high 57 low 37)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: HIGH (204)
WEEDS: ABSENT (0)
Measured 3.14.24
Data courtesy of Oregon Allergy Associates.
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Home Wood Heating Advisory:
Eugene-Springfield: GREEN- Burning wood in wood stoves or fireplaces is allowed.
Oakridge: GREEN- Burning wood in wood stoves or fireplaces is allowed.
*Pellet stoves can be used anytime since they don’t produce the particulate smoke.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Forecast for the Umpqua Valley including Roseburg:
- Areas of dense AM fog, sunny and a bit warmer today, clear tonight,
- Sunny and a bit cooler Sunday (St. Patrick’s Day), clear at night,
- Mostly sunny and a bit warmer Monday, then mostly clear Monday night.
- highs 72-75 lows 43-47.
- AM clouds, sunny and a bit cooler Tuesday afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers late Tuesday night (Vernal Equinox 8:06 pm, Spring Begins),
- Mostly cloudy and a bit cooler with a (30%) chance of showers Wednesday, a (30%) chance of showers at night,
- Mostly cloudy and a bit cooler with a (40%) chance of showers Thursday, a (40%) chance of showers Thursday night,
- A good (50%) chance of AM showers, then showers likely (70%) Friday afternoon.
- highs 72-56 lows 46-42. (seasonal average high 59 low 40)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Sunny and a bit cooler today, clear with patchy coastal fog late tonight,
- Mostly sunny and a bit cooler Sunday (St. Patrick’s Day), mostly clear at night,
- Some AM clouds, sunny Monday afternoon, mostly clear in the evening, then mostly cloudy Monday night.
- highs 68-65 lows 43-45.
- Mostly cloudy start, partly cloudy and a bit cooler Tuesday afternoon, a slight (20% ) chance of showers Tuesday night (Vernal Equinox 8:06 pm, Spring Begins),
- Mostly cloudy and a bit cooler with a (30%) chance of showers Wednesday, mostly cloudy with a (30%) chance of showers at night,
- Mostly cloudy and a bit cooler with a (40%) chance of showers Thursday, a (40%) of showers Thursday night,
- Mostly cloudy with a (40%) chance of AM showers, then mostly cloudy with showers likely (70%) Friday afternoon.
- highs 60-55 lows 44-42. (seasonal average high 55 low 42)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Sunny and a bit cooler today, clear tonight,
- Sunny and a bit warmer Sunday (St. Patrick’s Day), clear at night,
- Sunny and a bit warmer Monday, then mostly clear Monday night.
- free air freezing level 10,000 ft. rising to 11,000 ft. today, 11,000 ft. tonight, then 11,000 ft. Sunday through Monday night,
- highs 52-59 lows 30-35.
- Mostly sunny and a bit cooler Tuesday, partly cloudy with a (20%) chance of rain and snow Tuesday night (Vernal Equinox 8:06 pm, Spring Begins),
- A mix of clouds and sun with a good (50%) chance of rain and snow showers and cooler Wednesday, a good (50%) chance of snow and rain showers at night,
- Mostly cloudy and a bit cooler with snow showers likely (70%) and a (%) chance of rain showers Thursday, mostly cloudy with a (%) chance of rain and snow showers Thursday night.
- Then mostly cloudy and a bit cooler with snow and rain showers likely (70%) Friday,
- free air freezing level 10,000 ft. Tuesday, snow level 6,500 ft. Tuesday night, 4,500 ft. Wednesday, 4,000 ft. Wednesday night, 3,500 ft. Thursday, then 4,000 ft. Thursday night and Friday.
- highs 57-39 lows 33-28.
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