Follow EDN on Social Media |

(+)Contact Us  (+)Got A Hot Tip?  (+)Join The EDN Team

Tim Chuey Weather

by | Dec 16, 2023 | Weather

December 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

  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 AM MONDAY FOR THE SOUTH WILLAMETTE VALLEY.
  • A DENSE FOG ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE SOUTH WILLAMETTE VALLEY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM MONDAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON AND CENTRAL OREGON.
  • A DENSE FOG ADVISORY IS IN EFFECT UNTIL 10 AM MONDAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON AND CENTRAL OREGON.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 AM MONDAY FOR THE CENTRAL WILLAMETTE VALLEY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM MONDAY FOR THE LOWER COLUMBIA BASIN OF OREGON, WALLOWA COUNTY, THE JOHN DAY BASIN, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, AND NORTH CENTRAL OREGON.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM MONDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 11 PM MST MONDAY FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
  • A WIND ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE GRANDE RHONDE VALLEY.

HEALTH ADVISORIES

  • A PUBLIC HEALTH ADVISORY IS IN EFFECT FOR UNSAFE LEVELS OF FECAL BACTERIA IN OCEAN WATERS AT BEVERLY BEACH IN LINCOLN COUNTY. PEOPLE SHOULD AVOID DIRECT CONTACT WITH THE WATER IN THIS AREA UNTIL THE ADVISORY IS LIFTED. UNSAFE LEVELS OF FECAL BACTERIA CAN CAUSE DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. CHILDREN, THE ELDERLY, AND THOSE WITH A COMPROMISED IMMUNE SYSTEM SHOULD USE EXTRA CAUTION AS THEY ARE MORE VULNERABLE TO TO ILLNESSES FROM WATERBORNE BACTERIA. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER, AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.
  • A RECREATIONAL USE HEALTH ADVISORY HAS BEEN EXPANDED FOR THE AREA FROM THE ROSS ISLAND LAGOON TO RIVERPLACE MARINA IN MULTNOMAH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS CATCH AND RELEASE FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS. DRINKING WATER FROM THE LAKE IS ESPECIALLY DANGEROUS.
  • A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR THE WILLAMETTE RIVER FROM ROSS ISLAND DOWNSTREAM (NORTH) TO THE AREA NEAR CATHEDRAL PARK IN PORTLAND, IN MULTNOMAH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.DO NOT DRINK THE WATER.
  • A RECREATIONAL USE HEALTH ADVISORY CONTINUES IN EFFECT FOR ARRONS LAKE, BUT HAS BEEN LIFTED FOR PETE’S SLOUGH AND STURGEON LAKE ON SAUVIE ISLAND DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.
  • A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR AGENCY LAKE AND EXTENDED THE ADVISORY FOR THE SOUTHERN PORTION OF UPPER KLAMATH LAKE, FROM HOWARD’S BAY SOUTH TO THE LINK RIVER DAM  IN KLAMATH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE RESERVOIR WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.
  • 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

Frontal systems are moving through Oregon brought rain pushed by Atmospheric Rivers. An Upper Level High Pressure Ridge (“Arch” shape) is trying to hold off the cold fronts. The graphics for days 1-3  show the front is that was expected to move through. That’s why we saw some sunshine Friday afternoon. The graphics for days 3-7   Tuesday through Saturday show active frontal systems moving through the Eastern Pacific region and one just offshore next Saturday.

Note: The Winter Solstice occurs at 7:27 pm Thursday December 21st as the official beginning of astronomical Winter.

________________

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • AM clouds with areas of dense fog, partly cloudy and a bit warmer with patchy fog this afternoon, partly cloudy with patchy evening fog, mostly cloudy with patchy fog and areas of frost late tonight,
  • Patchy AM fog, mostly cloudy Sunday, mostly cloudy with a good (50%) chance of evening rain, rain likely (70%) with patchy fog late at night,
  • Patchy AM fog, mostly cloudy and a bit warmer with rain Monday, then rain Monday night.
  • highs 48-50 lows 33-44.
  • Mostly cloudy and a bit warmer with rain Tuesday, evening rain likely (70%), a good (50%) chance of rain late Tuesday night,
  • Mostly cloudy with a (40%) chance of AM rain, a bit cooler with a slight (20%) chance of rain Wednesday afternoon, a slight (20%) chance of rain at night,
  • A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain Thursday (Winter Solstice 7:27 PM), partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain late Thursday night,
  • Then a mix of clouds and sun with a (40%) chance of rain Friday.
  • highs 57-50 lows 44-39. (seasonal averages high 46 low 34)

Forecast for the Umpqua Valley including Roseburg:

  • Some AM clouds with patchy fog, sunny and a bit warmer this afternoon, mostly clear with patchy evening fog, partly cloudy with patchy fog late tonight,
  • Mostly cloudy with a slight (20%) chance of rain and a bit warmer Sunday afternoon, patchy fog with a (30%) chance of rain at night,
  • Patchy AM fog, mostly cloudy and a bit warmer with rain likely (70%) Monday and in the evening, then rain late Monday night.
  • highs 52-56 lows 38-49.
  • Mostly cloudy with AM rain, rain likely (70%) and a bit warmer Tuesday afternoon, a good (50%) chance of rain Tuesday night,
  • Mostly cloudy and a bit cooler with a slight (20%) chance of rain Wednesday, a slight (20%) chance of evening rain, just mostly cloudy late at night,
  • Mostly cloudy start, partly cloudy Thursday afternoon (Winter Solstice 7:27 PM) and evening, mostly cloudy with a slight (20%) chance of rain late Thursday night,
  • Then mostly cloudy with a slight (20%) chance of rain Friday.
  • highs 57-53 lows 47-42 (seasonal averages high 48 low 37.

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

  • Some AM clouds, sunny and warmer this afternoon, mostly clear in the evening, partly cloudy late tonight,
  • Mostly cloudy with a (30%) of rain and a bit cooler Sunday, a good (50%) chance of evening rain, rain likely (70%) at night (under 0.10 in. of rain possible),
  • Mostly cloudy with AM rain likely (70%),  rain and a bit cooler Monday afternoon, rain and breezy Monday night.
  • highs 66-60 lows 42-54.
  • Mostly cloudy with rain and a bit warmer Tuesday, evening rain likely (70%), a good (50%) chance of rain late Tuesday night,
  • Mostly cloudy with a (30%) chance of rain Wednesday, partly cloudy with a (30%) chance of evening rain, mostly cloudy with a slight (20%) chance of rain late at night,
  • Partly cloudy and a bit cooler with a slight (20%) chance of rain Thursday (Winter Solstice 7:27 PM) and Thursday night,
  • Then mostly cloudy and a bit cooler with a (30%) chance of rain Friday.
  • highs 62-58 lows 46-42. (seasonal averages high 53 low 40)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Some AM clouds, sunny and a bit warmer this afternoon, partly cloudy tonight,
  • A mix of clouds and sun with a slight (20%) chance of rain Sunday afternoon, mostly cloudy with a good (50%) chance of rain Sunday night,
  • Mostly cloudy and a bit cooler with rain Monday, rain at night.
  • free air freezing level 11,000 ft. today and tonight, snow level 7,000 ft. Sunday, 7,500 ft. Sunday night, 8,000 ft. Monday, then 7,000 ft. Monday night.
  • highs 48-43 lows 32-36.
  • Mostly cloudy with rain and a bit cooler Tuesday, evening rain likely (70%), a (40%) chance of rain Tuesday night,
  • A mix of clouds and sun with a good (50%) chance of rain and snow Wednesday, partly cloudy with a slight (20%) chance of evening rain and snow, a slight (20%) chance of rain and snow late at night,
  • Partly cloudy with a slight (20%) chance of rain and snow and a bit warmer Thursday (Winter Solstice 7:27 PM), a slight (20%) chance of evening rain, a slight (20%) chance of rain and snow late Thursday night,
  • Then a mix of clouds and sun with a good (50%) chance of rain and snow Friday.
  • snow level 7,000 ft. Tuesday, 6,500 ft. Tuesday night, 6,000 ft. Wednesday through Thursday, 6,500 ft. Thursday night, then 6,000 ft. Friday.
  • highs 42-43 lows 32-29.