June 19, 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
- None At This Time.
- 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 Low Pressure Trough (“U” shape) is moving away from the Pacific Northwest to be replaced by an Upper Level High Pressure Ridge (“Arch” shape). The graphics for days 1-3 show no new frontal systems approaching Oregon. The graphics for days 3-7 Wednesday through Sunday show a front coming from the west into Oregon Wednesday.
Forecast for the South Willamette Valley including Eugene-Springfield:
- Mostly cloudy with a (30%) chance of AM scattered showers, a bit warmer with a slight (20%) chance of showers this afternoon (Father’s Day, Juneteenth), mostly cloudy tonight,
- Mostly cloudy start, mostly sunny and a bit warmer Monday afternoon, mostly clear at night,
- Mostly sunny and a bit warmer Tuesday (Summer Solstice), then mostly clear Tuesday night.
- highs 67-79 lows 49-55.
- Mostly sunny Wednesday, mostly clear Wednesday night,
- Mostly sunny and a bit cooler Thursday, mostly clear at night.
- Mostly sunny Friday, mostly clear Friday night,
- Then mostly sunny and a bit warmer Saturday.
- highs 79-77 warming back to 79 Saturday lows 53-50 warming to 52 Friday night. (Seasonal Averages high 75 low 48)
Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy and a bit warmer today (Father’s Day, Juneteenth), partly cloudy this evening, mostly cloudy late tonight,
- AM clouds, sunny and a bit warmer Monday afternoon, mostly clear at night,
- Sunny and warmer Tuesday (Summer Solstice), then clear Tuesday night.
- highs 68-82 lows 50-56.
- Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Sunny and a bit cooler Thursday, clear at night,
- Sunny Friday, clear Friday night,
- Then sunny and a bit warmer Saturday.
- highs 82-79 warming back to 82 Saturday lows 56-53 warming to 55 Friday night. (Seasonal Averages high 77 low 53).
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Mostly cloudy and a bit cooler today (Father’s Day, Juneteenth), partly cloudy this evening, mostly cloudy late tonight,
- AM clouds, sunny and a bit warmer Monday afternoon, mostly clear at night,
- Mostly sunny and a bit warmer Tuesday (Summer Solstice), then mostly clear Tuesday night.
- highs 65-69 lows 50-53.
- Mostly sunny Wednesday and Thursday, mostly clear both nights,
- Then mostly sunny Friday and Saturday, mostly clear Friday night.
- highs near 69 lows 52-50 (Seasonal Averages high 64 low 52)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Mostly cloudy with patchy AM fog and a slight (20%) chance of rain and snow showers, a bit warmer with a slight (20%) chance of showers this afternoon (Father’s Day, Juneteenth), just mostly cloudy tonight,
- Mostly sunny and warmer Monday, clear Monday night,
- Sunny and warmer Tuesday (Summer Solstice), then mostly clear Tuesday night.
- snow level 6,000 ft. rising to 7,000 ft. this afternoon, free air freezing level 9,000 ft. rising to 10,000 ft. late tonight, 10,000 ft. rising to 11,000 ft. Monday afternoon, 11,000 ft. rising to 12,000 ft. late Monday night, 12,000 ft. rising to 13,000 ft. Tuesday afternoon, then 14,000 ft. Tuesday night.
- highs 52-72 lows 35-45.
- Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Mostly sunny and a bit cooler Thursday, mostly clear at night,
- Mostly sunny Friday, mostly clear Friday night,
- Then mostly sunny and a bit warmer Saturday.
- free air freezing level 14,000 ft. Wednesday through Friday night, then 13,000 ft. rising to 14,000 ft. Saturday afternoon.
- highs 73-69 warming to 72 Saturday lows 45-43 warming back to 45 Friday night.
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Just a slight chance of showers tonight.
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