February 22, 2024
Note: Weather is a constantly changing phenomenon and weather forecasting is a combination of science, experience, and intuition. The accuracy of any given forecast can chance due to unexpected changes in atmospheric conditions, so there are no guarantees the the actual weather will conform to the projected forecast.
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.
THE WEATHER PATTERN:
- The Upper Level High Pressure Ridge (“Arch” shape) has moved to the east and is followed by an Upper Level Low Pressure Trough (“U” shape). The graphics for days 1-3 show high pressure taking over and with clearing skies and no rain. The graphics for days 3-7 Sunday through Thursday show active weather with complex frontal systems active over the Pacific Ocean moving toward then into the Pacific Northwest.
Forecast For The South Willamette Valley Including Eugene-Springfield:
- A mix of clouds and sun and a bit warmer today, partly cloudy this evening, mostly cloudy late tonight,
- A mix of clouds and sun Friday, partly cloudy and night,
- Some AM clouds, sunny Saturday, partly cloudy in the evening, then mostly cloudy late Saturday night.
- highs near 57 lows near 39.
- Mostly cloudy and a bit cooler with a (30%) chance of showers Sunday, rain Sunday night,
- Mostly cloudy with rain and a bit cooler Monday (snow level 1,000 ft.), rain with snow likely (70%) at night (snow level 1,000 ft.),
- Mostly cloudy and a bit warmer with rain Tuesday and Tuesday night,
- Then mostly cloudy and a bit warmer with rain Wednesday.
- highs 55-45 warming to 50 lows 38-34 warming back to 38. (seasonal averages high 53 low 35)
Forecast for the Umpqua Valley including Roseburg:
- Patchy AM dense fog, mostly cloudy and slightly warmer this afternoon, mostly cloudy with patchy fog late tonight,
- Patchy AM fog, partly cloudy and a bit warmer Friday, partly cloudy at night,
- Mostly sunny and a bit cooler Saturday, then mostly clear Saturday night.
- highs 58-62 cooling to 59 Saturday lows 42-40.
- Mostly cloudy with a slight (20%) chance of rain Sunday, cloudy with rain Sunday night,
- Mostly cloudy and colder rain and snow Monday and in the evening, rain and snow likely (70%) late at night,
- Mostly cloudy and a bit warmer with rain and snow Tuesday, rain and snow Tuesday night,
- Then mostly cloudy and a bit warmer with rain Wednesday.
- highs 59-45 warming to 52 Wednesday lows 42-36 warming back to 42 Tuesday night. (seasonal average high 55 low 38)
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Mostly cloudy with a slight (20%) chance of AM coastal showers, otherwise mostly cloudy and a bit warmer this afternoon, mostly cloudy with patchy fog inland fog late tonight,
- Patchy AM fog, partly cloudy and a bit warmer Friday afternoon, mostly cloudy in the evening, partly cloudy late at night,
- Sunny and a bit cooler Saturday, mostly clear in the evening, then partly cloudy late Saturday night.
- highs 59-62 cooling back to 59 Saturday lows near 43.
- Mostly cloudy with a slight (20%) chance of rain and a bit cooler Sunday, cloudy with rain Sunday night,
- Mostly cloudy and a bit cooler with rain Monday, evening rain and snow, rain and snow likely (70%) at night,
- Mostly cloudy and a bit warmer with rain Tuesday, rain Tuesday night,
- Then mostly cloudy and a bit warmer with rain Wednesday.
- highs 59-49 warming to 52 Tuesday lows 42-39. (seasonal averages high 54 low 41).
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Partly cloudy and a bit warmer today, partly cloudy tonight,
- Partly cloudy and a bit warmer Friday, partly cloudy at night,
- Then mostly sunny Saturday, mostly clear Saturday night.
- free air freezing level 4,500 ft. rising to 6,000 ft. this afternoon, 6,500 ft. rising tonight, 7,000 ft. rising to 8,000 ft. Friday afternoon, 8,000 ft. falling to 6,500 ft. Friday night, 7,500 ft. Saturday, then 7,000 ft. Saturday night.
- highs 39-47 lows 27-30.
- A mix of clouds and sun with a slight (20%) chance of showers and a bit cooler Sunday, snow and rain Sunday night (snow possibly heavy at times),
- Mostly cloudy and colder with snow Monday (snow possibly heavy at times), snow at night,
- Mostly cloudy and a bit warmer with snow Tuesday and Tuesday night,
- Then mostly cloudy and a bit warmer with snow and rain Wednesday.
- snow level 5,000 ft. Sunday, 4,000 ft. Sunday night, at the surface Monday through Tuesday, 2,500 ft. Tuesday night, then 3,000 ft. Wednesday.
- highs 44-29 warming to 34 Wednesday lows 25-20 warming back to 25 Wednesday.