Mar
17.
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.
__________
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 system approaching the Pacific Coast today. The graphics for days 3-7 Wednesday through Sunday show the frontal system that pushes through the Pacific Northwest Wednesday and next Sunday.
Note: The Vernal Equinox takes place next Tuesday March 19th at 8:06 pm to begin the season of Spring.
________________.
Air Quality Index:
Eugene/Springfield: The Air Quality Index is 37 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 25 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
_______________
ADVISORIES:
- NONE AT THIS TIME.
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:
- Mostly clear tonight,
- Mostly sunny and a bit warmer Monday, mostly clear Monday night,
- AM clouds, sunny and a bit cooler Tuesday afternoon, partly cloudy at night (Vernal Equinox 8:06 pm, Spring Begins),
- Mostly cloudy and a bit cooler with a good (50%) chance of rain Wednesday, then a good (50%) chance of rain Wednesday night.
- lows 38-47 cooling to 45 Tuesday night and Wednesday night highs 73-59.
- Mostly cloudy a bit warmer with with a good (50%) chance of rain Thursday and Thursday night,
- Mostly cloudy and a bit cooler with rain Friday and at night,
- Mostly cloudy and a bit cooler with rain Saturday, rain Saturday night,
- Then mostly cloudy and a bit cooler with rain Sunday.
- highs 62-52 lows 44-40. (seasonal averages high 57 low 37)
__________
EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: VERY HIGH (516)
WEEDS: ABSENT (0)
Measured 3.16.24
Data courtesy of Oregon Allergy Associates.
__________
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)
________________
Forecast for the Umpqua Valley including Roseburg:
- Clear tonight,
- Mostly sunny and a bit warmer Monday, mostly clear Monday night,
- Some AM clouds, sunny and a bit cooler Tuesday afternoon, mostly clear in the evening, mostly cloudy late at night (Vernal Equinox 8:06 pm, Spring Begins),
- Mostly cloudy and a bit cooler with a slight (20%) chance of rain Wednesday, then a slight (20%) chance of showers Wednesday night.
- lows 44-48 cooling to 45 Wednesday night highs 76-62.
- Mostly cloudy and a bit warmer with a (40%) chance of showers Thursday and in the evening, showers likely (70%) Thursday night,
- Mostly cloudy with AM showers likely (70%), showers and a bit cooler Friday afternoon, showers at night,
- Mostly cloudy with showers and a bit cooler Saturday, evening showers, rain and snow showers likely (70%) late Saturday night,
- Mostly cloudy and a bit cooler with rain and snow showers Sunday.
- highs 63-52 lows 45-42. (seasonal average high 59 low 40)
___________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly clear this evening, partly cloudy late tonight with patchy inland fog late,
- Some AM clouds with inland patchy fog, sunny Monday afternoon, mostly clear in the evening, mostly cloudy with patchy fog late Monday night,
- AM clouds with patchy fog, partly cloudy and a bit cooler Tuesday afternoon and evening, mostly cloudy late with a slight (20%) chance of coastal showers at night (Vernal Equinox 8:06 pm, Spring Begins),
- Mostly cloudy and a bit warmer with a (30%) chance of rain Wednesday, then a (30%) chance of showers Wednesday night.
- lows 43-45 highs 67-58 warming to 60 Wednesday.
- Mostly cloudy and a bit cooler with a (40%) chance of showers Thursday and in the evening, showers likely (70%) late Thursday night,
- Mostly cloudy and a bit cooler with showers Friday and at night,
- Mostly cloudy and a bit cooler with showers Saturday, showers Saturday night,
- Then mostly cloudy with showers and a bit cooler Sunday.
- highs 58-53 lows 44-42. (seasonal average high 55 low 42)
__________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Clear tonight,
- Sunny and a bit cooler Monday, mostly clear Monday night,
- Sunny and a bit cooler Tuesday, partly cloudy Tuesday night (Vernal Equinox 8:06 pm, Spring Begins),
- A mix of clouds and sun with a good (50%) chance of rain and snow and cooler Wednesday, then a good (50%) chance of rain and snow Wednesday night.
- free air freezing level 11,000 ft. tonight through Monday night, 10,000 ft. Tuesday, 9,000 ft. Tuesday night, snow level 5,500 ft. Wednesday, then 5,000 ft. Wednesday night.
- lows 33-38 cooling to 32 Wednesday night highs 62-46.
- A mix of clouds and sun and a bit warmer with a good (50%) chance of rain and snow Thursday, rain and snow likely (70%) Thursday night,
- Mostly cloudy and a bit cooler with rain and snow Friday, snow and rain at night,
- Mostly cloudy with snow and rain and a bit cooler Saturday and Saturday night,
- Then mostly cloudy and a bit cooler with a slight (20%) chance of rain Sunday.
- snow level 5,000 ft. Thursday and Thursday night, 4,500 ft. Friday and Friday night, 3,500 ft. Saturday, then 3,000 ft. Saturday night and Sunday
- highs 47-35 lows 32-27.
__________
For all of your Eugene-Springfield and Lane County News, Weather, and Sports go to: EugeneDailyNews.com