June 23, 2022
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 HEAT ADVISORY IS IN EFFECT FROM NOON SATURDAY UNTIL 10 PM SUNDAY FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY, THE NORTHERN OREGON CASCADE FOOTHILLS, AND THE CASCADE FOOTHILLS IN LANE COUNTY.
- A HEAT ADVISORY IS IN EFFECT FROM NOON SATURDAY UNTIL 10 PM MONDAY FOR THE LOWER COLUMBIA, THE GREATER PORTLAND METRO AREA, THE UPPER HOOD RIVER VALLEY, THE WESTERN COLUMBIA RIVER GORGE, AND THE CENTRAL COLUMBIA RIVER GORGE.
- A HEAT ADVISORY IS IN EFFECT FROM 11 AM SATURDAY UNTIL 11 PM SUNDAY FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- A PERMANENT RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR THE SOUTH UMPQUA RIVER AND MAINSTEM UMPQUA RIVER. THE ADVISORY COVERS THE SOUTH UMPQUA RIVER FROM CANYONVILLE DOWNSTREAM TO THE CONFLUENCE OF THE MAINSTEM UMPQUA RIVER, AND THE MAINSTEM UMPQUA RIVER DOWNSTREAM PAST ELKTON TO LAWSON BAR. PEOPLE IN THE BEDROCK ALONG THE RIVERS EDGE ARE ARE KNOWN TO DEVELOP CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED AT SEVERAL ACCESS AREAS ALONG THE RIVER.
THE WEATHER PATTERN
An Upper Level High Pressure Ridge (“Arch” shape) brought sunshine and warmer temperatures just in time as Summer began, but a weak cold front passed and we’re seeing a brief cool down. The graphics for days 1-3 show that frontal system that fell apart as it moved through Oregon. The graphics for days 3-7 Sunday through Thursday show a cold front moving into the Pacific Northwest next Monday night into Tuesday.
Forecast for the South Willamette Valley including Eugene-Springfield:
- Mostly clear tonight,
- Mostly sunny and a bit warmer Friday, clear Friday night,
- Sunny and a bit warmer Saturday, clear at night,
- Sunny and Hot Sunday, then clear Sunday night.
- lows 47-60 highs 79-95.
- Mostly sunny and a bit cooler Monday, clear Monday night,
- Mostly sunny and cooler Tuesday, mostly clear at night,
- Then partly cloudy and a bit cooler Wednesday and Thursday, mostly clear Wednesday night.
- highs 90-75 lows 55-52. (Seasonal Averages high 77 low 49)
Forecast for the Umpqua Valley including Roseburg:
- Clear tonight,
- Sunny and a bit warmer Friday, clear Friday night,
- Sunny warmer Saturday, clear at night,
- Sunny and a bit warmer Sunday, then clear Sunday night.
- lows 52-63 highs 86-98.
- Sunny and a bit cooler Monday, clear Monday night,
- Mostly sunny and a bit cooler Tuesday, mostly clear at night,
- Mostly sunny and a bit cooler Wednesday,mostly clear Wednesday night,
- Some AM clouds, then sunny Thursday.
- highs 92-78 warming to 80 Thursday lows 63-55. (Seasonal Averages high 78 low 53).
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Clear tonight,
- Sunny Friday, clear Friday night,
- Sunny and warmer Saturday, clear at night,
- Sunny Sunday, then mostly clear Sunday night.
- lows 49-58 cooling to 55 Sunday night highs 72-82 cooling to 79 Sunday night.
- Mostly sunny and cooler Monday, mostly clear in the evening, partly cloudy late Monday night,
- Partly cloudy and a bit cooler Tuesday, partly cloudy Tuesday night,
- Then partly cloudy and a bit cooler Wednesday and Thursday, partly cloudy Thursday night.
- highs 80-67 lows 55-52 (Seasonal Averages high 64 low 52)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Clear tonight,
- Sunny and a bit warmer Friday, clear Friday night,
- Mostly sunny and a bit warmer Saturday, clear at night,
- Sunny and a bit warmer Sunday, then clear Sunday night.
- free air freezing level 13,000 ft. tonight and Friday, 14,000 ft. Friday night and Saturday, then 15,000 ft. Saturday night through Sunday night.
- lows 42-54 highs 70-84.
- Sunny and a bit cooler Monday, clear Monday night,
- Mostly sunny and cooler Tuesday, mostly clear at night,
- Then mostly sunny and a bit cooler Wednesday and Thursday, mostly clear Wednesday night,
- free air freezing level 15,000 ft. Monday, 14,000 ft. Monday night, 14,000 ft. rising to 15,000 ft. Tuesday, 13,000 ft. Tuesday night, 12,000 ft. Wednesday afternoon, 13,000 ft. Wednesday night, then 12,000 ft. Friday.
- highs 79-65 lows 54-44.
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Just a slight chance of showers tonight.
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