May 9, 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:
An Upper Level High Pressure Ridge (“Arch” shape ) is taking over giving us serious warming. The graphics for days 1-3 show the lack of frontal systems. The graphics for days 3-7 Sunday through Thursday show no frontal activity moving across the Pacific Northwest through the period except for a front to our north next Thursday.
Forecast For The South Willamette Valley Including Eugene-Springfield:
- Clear tonight,
- Sunny and a bit warmer Friday, clear Friday night,
- Sunny and slightly cooler Saturday, clear at night,
- Sunny and a bit cooler Sunday (Mother’s Day), then mostly clear Sunday night.
- lows 52-57 cooling to 48 Sunday night highs 86-78.
- Mostly sunny and a bit cooler Monday, partly cloudy Monday night,
- Sunny Tuesday, mostly clear at night,
- Sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Then sunny Thursday.
- highs 72-75 lows 46-49 (seasonal averages high 67 low 43)
Forecast for the Umpqua Valley including Roseburg:
- Clear tonight,
- Sunny and warmer Friday, clear Friday night,
- Sunny and a bit cooler Saturday, clear at night,
- Sunny and cooler Sunday (Mother’s Day), then mostly clear Sunday night.
- lows 54-58 cooling to 52 Sunday night highs 92-82.
- Mostly sunny and a bit cooler Monday, mostly clear in the evening, partly cloudy late Monday night,
- Mostly sunny and a bit cooler Tuesday, mostly clear at night,
- Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Then sunny Thursday.
- highs 76-82 lows 49-52. (seasonal average high 70 low 47)
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Clear tonight,
- Sunny and warmer Friday, clear Friday night,
- Cloudy with AM coastal showers and sunny and cooler Saturday afternoon while sunny inland Saturday, becoming cloud at the shore at night while clear inland at night,
- Some AM clouds, sunny and a bit cooler Sunday afternoon (Mother’s Day), then partly cloudy Sunday night.
- lows 53-48 highs 80-63.
- Partly cloudy Monday, partly cloudy Monday night,
- Then mostly sunny and a bit warmer Tuesday, Wednesday, and Thursday, mostly clear each night,
- highs 63-67 lows 46-48. (seasonal average high 60 low 47)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Clear tonight,
- Sunny and warmer Friday, clear Friday night,
- Sunny and a bit cooler Saturday, clear at night,
- Sunny and a bit cooler Sunday (Mother’s Day), mostly clear Sunday night.
- free air freezing level 12,000 ft. tonight, 11,000 ft. rising to 12,000 ft. Saturday, 13,000 ft. Saturday night, then 12,000 ft. Sunday and Sunday night.
- lows 42-46 cooling back to 42 Sunday night highs 72-67.
- Mostly sunny and a bit cooler Monday, partly cloudy Monday night,
- Sunny and a bit warmer Tuesday, mostly clear at night,
- Sunny and a bit warmer Wednesday, mostly clear with a slight (20%) chance of showers Wednesday night,
- Then mostly sunny and a bit cooler Thursday with a slight (20%) chance of rain and snow showers.
- free air freezing level 12,000 ft. Monday, 13,000 ft. Monday night through Tuesday night, 14,000 ft. Wednesday, snow level above 8,000 ft. Wednesday night, then 7,500 ft. Thursday.
- highs 62-66 cooling to 64 Thursday lows 38-42.