May 8, 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 THE NORTH OREGON COAST RANGE LOWLANDS, THE CENTRAL OREGON COAST RANGE LOWLANDS, THE TUALATIN VALLEY, THE WEST CENTRAL WILLAMETTE VALLEY, THE EAST CENTRAL WILLAMETTE VALLEY, THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, THE LANE COUNTY LOWLANDS, THE UPPER HOOD RIVER VALLEY, THE CLACKAMAS COUNTY CASCADE FOOTHILLS, THE CASCADE FOOTHILLS OF MARION AND LINN COUNTIES, AND THE LANE COUNTY CASCADE FOOTHILLS.
- A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 10 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 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 Friday through Tuesday show no frontal activity moving across the Pacific Northwest through the period except for a front to our north next Wednesday.
Forecast For The South Willamette Valley Including Eugene-Springfield:
- Areas of AM frost and patchy frost, sunny and a bit warmer this afternoon, clear with patchy fog late tonight,
- Sunny and warmer Thursday, clear at night,
- Sunny and a bit warmer Friday, then clear Friday night.
- highs 65-86 lows 42-54.
- Sunny and a bit cooler Saturday, clear Saturday night,
- Sunny and a bit cooler Sunday (Mother’s Day), mostly clear at night,
- Mostly sunny and a bit cooler Monday, mostly clear Monday,
- Then mostly sunny Tuesday.
- highs 85-73 lows 49-47 (seasonal averages high 67 low 43)
Forecast for the Umpqua Valley including Roseburg:
- Areas of AM frost, sunny and warmer this afternoon, clear tonight,
- Sunny and warmer Thursday, clear at night,
- Sunny and a bit warmer Friday, then clear Friday night.
- highs 66-89 lows 44-57.
- Sunny and a bit cooler Saturday, clear Saturday night,
- Sunny and cooler Sunday (Mother’s Day), mostly clear at night,
- Mostly sunny and a bit cooler Monday, mostly clear Monday night,
- Then mostly sunny Tuesday.
- highs 87-75 lows 54-49. (seasonal average high 70 low 47)
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Sunny and warmer Thursday, clear Thursday night.,
- Sunny and a bit warmer Friday, then clear Friday night.
- lows 38-53 cooling to 49 Friday night highs 62-79.
- Mostly sunny and cooler Saturday, mostly clear Saturday night,
- Mostly sunny and a bit cooler Sunday afternoon (Mother’s Day), mostly clear at night,
- Mostly sunny Monday, mostly clear Monday night,
- Then mostly sunny and a bit warmer Tuesday.
- highs 69-63 warming to 65 Tuesday lows 49-46. (seasonal average high 60 low 47)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Sunny and warmer today, clear tonight,
- Sunny and warmer Thursday, clear at night,
- Sunny and a bit warmer Friday, then clear Friday night.
- free air freezing level 5,000 ft. rising to 9,000 ft. this afternoon, 11,000 ft. tonight, 11,000 ft. rising to 12,000 ft. Thursday afternoon, 13,000 ft. Thursday night and Friday, then 12,000 ft. Friday night.
- highs 53-72 lows 33-45.
- Sunny and slightly cooler Saturday, clear Saturday night,
- Sunny and a bit cooler Sunday (Mother’s Day), mostly clear at night,
- Sunny and a bit cooler Monday, mostly clear in the evening, partly cloudy late Monday night,
- Then sunny Tuesday.
- free air freezing level 12,000 ft. Saturday through Monday, then 13,000 ft. Monday night and Tuesday.
- highs 70-63 lows 44-40.