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Tim Chuey Weather

by | May 15, 2023 | Weather

May 15, 2023

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 UNTIL 8 PM TODAY FOR THE LOWER COLUMBIA AND THE GREATER PORTLAND METRO AREA.
  • A FLOOD WATCH IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE GRANDE RONDE VALLEY, WALLOWA COUNTY, THE NORTHERN BLUE MOUNTAINS OF OREGON, THE SOUTHERN BLUE MOUNTAINS OF OREGON, THE OCHOCO, THE JOHN DAY HIGHLANDS, THE EAST SLOPES OF THE OREGON CASCADES, AND THE NORTHWEST BLUE MOUNTAINS.
  • A FLOOD WATCH IS IN EFFECT UNTIL 10 PM TONIGHT THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE LOWER COLUMBIA, THE GRATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY, THE NORTHERN OREGON CASCADE FOOTHILLS, THE NORTHERN OREGON CASCADES,THE CASCADE FOOTHILLS IN LANE COUNTY, THE UPPER HOOD RIVER VALLEY, THE WESTERN COLUMBIA RIVER GORGE, AND THE CENTRAL COLUMBIA RIVER GORGE.
  • A FLOOD WATCH IS IN EFFECT UNTIL 10 PM TONIGHT FOR CENTRAL DOUGLAS COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

HEALTH ADVISORIES

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

A blocking  Upper Level High Pressure Ridge (“Arch” shape) sitting over us has taken over bringing a heat wave. Low Pressure to our east is pushing against the ridge The graphics for days 1-3  show system, show no frontal systems approaching the Pacific Northwest. The graphics for days 3-7  Thursday through next Monday show a quiet weather pattern with a complex frontal system lingering offshore Thursday and then pushing through Oregon next Friday through Sunday.

Note: Sunday was a hot one. Record high 94 for Eugene and 95 for North Bend. Today Eugene hit another record high 89.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Partly cloudy with a slight (20%) chance of isolated evening showers and thunderstorms (rain possibly heavy in storms), just partly cloudy with patchy fog late tonight,
  • Some AM clouds with patchy fog, sunny and a bit cooler Tuesday afternoon, partly cloudy with patchy fog Tuesday night,
  • Mostly sunny Wednesday, mostly clear at night,
  • Some AM clouds, mostly sunny and a bit cooler Thursday, then mostly clear with patchy fog late Thursday night.
  • lows 54-52 highs 87-80.
  • Some AM clouds, mostly sunny Friday afternoon, mostly clear Friday night,
  • Partly cloudy and a bit cooler Saturday and at night,
  • Then partly cloudy and a bit cooler Sunday through Monday.
  • highs 80-72 lows 53-47 (seasonal averages high 68 low 44)

Forecast for the Umpqua Valley including Roseburg:

  • Partly cloudy with a slight (20%) chance of isolated evening thunderstorms, just mostly clear with patchy fog late tonight,
  • Patchy AM fog, sunny and a bit cooler Tuesday, mostly clear Tuesday night,
  • Sunny and a bit warmer Wednesday, mostly clear at night,
  • Mostly sunny and a bit cooler Thursday, then mostly clear Thursday night.
  • lows 58-56 warming back to 58 Wednesday night cooling to 55 Thursday night highs 87-90 cooling to 83 Thursday.
  • Mostly sunny and a bit cooler Friday, mostly clear Friday night,
  • Partly cloudy and a bit cooler Saturday and at night,
  • Mostly cloudy start, partly cloudy Sunday afternoon, partly cloudy Sunday night,
  • Then sunny and a bit cooler Monday.
  • highs 82-74 lows 56-52. (seasonal averages high 71 low 48)

Forecast for the Oregon Coast including Coos Bay and North Bend:

  • Partly cloudy this evening, mostly cloudy with patchy fog late tonight,
  • AM clouds with patchy fog, sunny and a bit warmer Tuesday afternoon, partly cloudy  late Tuesday night,
  • Some AM clouds, sunny and a bit warmer Wednesday afternoon, partly cloudy at night,
  • Partly cloudy and a bit cooler Thursday, then partly cloudy Thursday night.
  • lows 52-50 highs 67-70 cooling to 65 Thursday.
  • Partly cloudy and a bit warmer Friday and Friday night,
  • Mostly cloudy and a bit cooler Saturday and at night,
  • Mostly cloudy start, partly cloudy Sunday afternoon and Sunday night,
  • Then sunny and a bit cooler Monday.
  • highs 66-63 lows 52-48. (seasonal averages high 61 low 48)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy with a good (50%) chance of scattered evening showers and thunderstorms (0.25 in. of rain possible, more in storms),  just partly cloudy late tonight,
  • Partly cloudy with a slight (20%) chance of AM showers, a bit warmer with a slight (20%) chance of showers and thunderstorms Tuesday afternoon, just partly cloudy Tuesday night,
  • Mostly sunny Wednesday, mostly clear at night,
  • Mostly sunny and a bit cooler with a slight chance of showers and thunderstorms Thursday afternoon,  partly cloudy with a slight (20%) chance of evening showers and thunderstorms, then  just partly cloudy Thursday night.
  • snow level above 8,000 ft. tonight and Tuesday, free air freezing level 12,000 ft. Wednesday, 13,000 ft. Wednesday night, then snow level above 8,000 ft. Thursday and Thursday night.
  • lows 42-46 highs 67-74.
  • Mostly sunny start, partly cloudy with a slight (20%) chance of showers and thunderstorms Friday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Friday night,
  • Partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Saturday afternoon and evening, just partly cloudy late at night,
  • Partly cloudy and a bit cooler with a slight (20%) chance of showers Sunday afternoon and evening, just partly cloudy late Sunday night,
  • Some AM clouds, then sunny Monday afternoon.
  • snow level above 8,000 ft. Friday through Sunday night, then free air freezing level 13,000 ft. Monday.
  • highs 74-62 lows 46-39.