May 23, 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
- A FROST ADVISORY IS IN EFFECT UNTIL 8 AM TODAY FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND 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.
THE WEATHER PATTERN:
An Upper Level Low Pressure Trough (“U” shape ) is moving away from us as weak High Pressure tries to replace it. The graphics for days 1-3 show the frontal system that moved through Oregon Wednesday. The graphics for days 3-7 Sunday through Thursday show a cold front that will push into the Pacific Northwest between Tuesday and next Wednesday.
Note: The weather looks pretty good for the Memorial Day Holiday weekend. The only chance of a little rain seems to be Friday night and during the day Saturday. That means Sunday and Memorial Day should be bright and dry.
Forecast For The South Willamette Valley Including Eugene-Springfield:
- Patchy AM fog, sunny and a bit warmer this afternoon, mostly clear this evening, partly cloudy with patchy fog late tonight,
- Some AM clouds, a mix of clouds and sun and a bit cooler Friday afternoon, mostly cloudy with a good (50%) chance of showers at night,
- A mix of clouds and sun and a bit cooler with a (40%) chance of showers Saturday, then just partly cloudy Saturday night.
- highs 68-64 lows 47-42.
- Mostly sunny and a bit warmer Sunday, mostly clear Sunday night,
- Sunny and a bit warmer Monday (Memorial Day), mostly clear at night,
- Mostly sunny Tuesday, partly cloudy with a slight (20%) chance of showers Tuesday night,
- Then mostly sunny with a slight (20%) chance of showers and a bit cooler Wednesday.
- highs 70-75 cooling to 72 Wednesday lows 45-48. (seasonal averages high 69 low 45)
Forecast for the Umpqua Valley including Roseburg:
- Sunny and a bit warmer today, mostly clear this evening, mostly cloudy late tonight,
- Mostly cloudy and a bit warmer with a slight (20%) chance of rain Friday, mostly cloudy with a (30%) chance of rain at night (under 0.10 in. of rain possible),
- Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit cooler Saturday afternoon and evening, then mostly clear late Saturday night.
- highs 72-66 lows 49-44.
- Mostly sunny and a bit warmer Sunday, mostly clear Sunday night,
- Mostly sunny and a bit warmer Monday (Memorial Day), mostly clear at night,
- Partly cloudy and a bit cooler cooler Tuesday, then partly cloudy with a slight (20%) chance of rain Tuesday night and Wednesday.
- highs 74-79 cooling back to 74 Wednesday lows 48-50. (seasonal average high 72 low 49)
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Some AM clouds, sunny and a bit warmer today, partly cloudy this evening, mostly cloudy with patchy coastal fog and a slight (20%) chance of rain late tonight,
- Mostly cloudy with patchy AM coastal fog, mostly cloudy and a bit cooler with a slight (20%) chance of rain Friday afternoon, mostly cloudy with a slight (20%) chance of evening coastal showers while a slight (20%) chance of inland rain Friday night (under 0.10 in. of rain possible) patchy fog late,
- Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit cooler Saturday afternoon, then partly cloudy with patchy fog late Saturday night.
- highs 62-64 cooling to back to 62 Saturday lows 42-46 cooling back to 42 Saturday night.
- Some AM clouds, sunny and a bit warmer Sunday, partly cloudy with patchy fog late Sunday night,
- Sunny and a bit warmer Monday (Memorial Day), mostly clear in the evening, partly cloudy with patchy fog late at night,
- Partly cloudy with patchy AM fog, partly cloudy and a bit cooler cooler Tuesday afternoon, mostly cloudy with a slight (20%) chance of rain late Tuesday night,
- Mostly cloudy with a slight (20%) chance of AM rain, then partly cloudy and a bit cooler Wednesday afternoon.
- highs 62-64 cooling back to to 62 Wednesday lows 44-47. (seasonal average high 61 low 49)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Sunny and warmer today, partly cloudy this evening, mostly cloudy late tonight,
- Clouds and sun with a slight (20%) chance of AM showers, a mix of clouds and sun with a good (50%) chance of showers and a bit cooler Friday afternoon, mostly cloudy with showers likely (70%) at night,
- Mostly cloudy with a good (50%) chance of AM rain and snow showers, partly cloudy and a bit cooler with a good (50%) chance of rain and snow showers Saturday afternoon, then just partly cloudy Saturday night.
- free air freezing level 8,000 ft. this afternoon, 9,000 ft. tonight, snow level 6,500 ft. Friday, 7,000 ft. falling to 5,500 ft. Friday night, 5,000 ft. Saturday, then free air freezing level 8,000 ft. Saturday night.
- highs 57-49 lows 36-32.
- Sunny and warmer Sunday, mostly clear Sunday night,
- Sunny and a bit warmer Monday (Memorial Day), mostly clear at night,
- Mostly sunny and a bit warmer Tuesday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late Tuesday night,
- Then mostly cloudy and cooler with a slight (20%) chance of showers|Wednesday.
- free air freezing level 9,000 ft. Sunday, 11,000 ft. Sunday night, 12,000 ft. Monday and Monday night, 11,000 ft. Tuesday, snow level 8,000 ft. Tuesday night, then 7,000 ft. Wednesday.
- highs 59-68 cooling back to 59 Wednesday lows 38-42 cooling to 40 Tuesday night.