Follow EDN on Social Media |

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

Tim Chuey Weather

by | Dec 17, 2023 | Weather

December 18, 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 TODAY FOR THE CENTRAL WILLAMETTE VALLEY AND THE SOUTH WILLAMETTE VALLEY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10AM TODAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
  • A FREEZING FOG ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR NORTH CENTRAL OREGON.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR NORTH CENTRAL OREGON.
  • A FREEZING FOG ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR CENTRAL OREGON.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR NORTH CENTRAL OREGON.
  • A WIND ADVISORY IS IN EFFECT FROM 4 PM TODAY UNTIL 7 AM TUESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 AM TODAY FOR THE LOWER COLUMBIA.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON AND CENTRAL OREGON.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE LOWER COLUMBIA BASIN OF OREGON, WALLOWA COUNTY, THE JOHN DAY BASIN, AND THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR NORTH CENTRAL OREGON.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, AND THE KLAMATH BASIN.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 11 PM MST TONIGHT FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
  • A WIND ADVISORY IS IN EFFECT FROM 4 PM MONDAY  UNTIL 7 AM TUESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
  • A WIND ADVISORY IS IN EFFECT UNTIL 3 PM TUESDAY FOR THE GRANDE RONDE VALLEY.
  • A WIND ADVISORY IS IN EFFECT FROM 10 AM TODAY UNTIL 1 AM TUESDAY FOR JACKSON COUNTY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR JACKSON COUNTY.

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

An Upper Level High Pressure Ridge (“Arch” shape) is slowly moving eastward to be replaced by Upper Level Low Pressure (“U” shape) offshore. The graphics for days 1-3  show a front ready to move in Tuesday . The graphics for days 3-7  Thursday through Monday show active frontal systems moving through the Eastern Pacific region and into the Pacific Northwest. A cold front pushes through between Friday and Saturday.

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

________________

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with rain likely (70%) and warmer today (0.10 in. of rain possible), rain tonight (0.50 in. of rain possible)
  • Mostly cloudy and a bit warmer with rain Tuesday (0.10 in. of rain possible), mostly cloudy with a good (50%) chance of evening rain, a slight (20%) chance of rain late at night,
  • Mostly cloudy and a bit cooler Wednesday, then mostly cloudy Wednesday night.
  • highs 50-58 cooling to 52 Wednesday lows 45-42 Wednesday night .
  • Mostly cloudy and a bit cooler with a slight (20%) chance of rain Thursday afternoon (Winter Solstice 7:27 PM), mostly cloudy a slight (20%) chance of evening rain, a good (50%) chance of rain Thursday night,
  • Mostly cloudy and a bit warmer with rain likely (70%) Friday, evening rain likely (70%), a (40%) chance of rain late at night,
  • A mix of clouds and sun and a bit cooler with a (40%) chance of rain Saturday afternoon, partly cloudy with a slight (20%) chance of rain with a slight (20%) chance of snow late Saturday night,
  • Clouds and sun with a slight (20%) chance of AM rain and snow, then a (30%) chance of rain and snow Sunday afternoon.
  • highs 52-48 lows 42-34. (seasonal averages high 46 low 34)

Forecast for the Umpqua Valley including Roseburg:

  • Cloudy and warmer with a  good (50%) of rain today, a good (50%) chance of evening rain, rain likely (70%) late tonight (0.10 in. of rain possible),
  • Mostly cloudy with rain Tuesday (under 0.10 in. of rain possible), a good (50%) chance of rain at night (0.10 in. of rain possible),
  • Mostly cloudy Wednesday afternoon, partly cloudy in the evening, then mostly cloudy late Wednesday night.
  • highs near 55 lows 50-43.
  • Mostly cloudy start, partly cloudy Thursday afternoon (Winter Solstice 7:27 PM), mostly cloudy with a (0%) chance of rain  Thursday night,
  • Mostly cloudy with a good (50%) chance of rain and a bit cooler Friday, a good (50%) chance of rain at night,
  • Mostly cloudy with a good (50%) chance of AM rain and snow, a bit cooler with a slight (20%) chance of rain Saturday afternoon, partly cloudy with a slight (20%) chance of evening rain, mostly cloudy with a slight (20%) chance of rain and snow late Saturday night,
  • Mostly cloudy with a slight (20%) chance of AM rain and snow, then a slight (20%) of rain and a bit warmer Sunday afternoon.
  • highs 55-48 warming to 50 Sunday lows 42-36 (seasonal averages high 48 low 36.

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

  • Mostly cloudy with a (40%) chance of AM coastal rain and coastal rain likely (70%) and a bit warmer this afternoon while a (40%) chance of inland rain and a bit warmer this afternoon (under 0.10 in. of rain possible), evening coastal rain with coastal rain and a slight (20%) chance of thunderstorms late tonight while inland rain tonight (0.25 in. of rain possible),
  • Mostly cloudy with AM coastal rain and a slight (20%) chance of thunderstorms and coastal rain and a bit cooler in the afternoon while inland rain and a bit cooler Tuesday (0.25 in. of rain possible), a (30%) chance of rain at night (under 0.10 in. of rain possible),
  • Mostly cloudy with a slight (20%) chance of AM rain, just partly cloudy Wednesday afternoon, then partly cloudy Wednesday night.
  • highs 60-58 lows 52-42.
  • Partly cloudy and a bit warmer Thursday (Winter Solstice 7:27 PM), mostly cloudy with a slight (25%) chance of rain Thursday night,
  • Mostly cloudy with a good (50%) chance of AM rain, rain likely (70%) and a bit cooler Friday afternoon, a good (50%) chance of rain at night,
  • Mostly cloudy and a bit cooler with a (30%) chance of rain Saturday, partly cloudy with a (30%) chance of evening rain, mostly cloudy with a slight (20%) chance of rain late Saturday night,
  • Then mostly cloudy and a bit warmer with a (30%) chance of rain Sunday.
  • highs 60-54 warming to 57 Sunday lows 43-38. (seasonal averages high 53 low 40)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy and a bit warmer with rain today (0.10 in. of rain possible), rain tonight (0.25 in. of rain possible) and breezy (Pass Winds: S 15-25 mph gusts to 45 mph),
  • Mostly cloudy with rain Tuesday, evening rain likely (70%),  then a good (50%) chance of rain late at night,
  • Partly cloudy with a slight (20%) chance of AM rain,  just partly cloudy and a bit warmer Wednesday, then partly cloudy Wednesday night.
  • snow level 7,500 ft. today, 7,000 ft. tonight, 6,500 ft. Tuesday, 6,000 ft. Tuesday night, 6,500 ft. Wednesday, then free air freezing level 9,000 ft. Wednesday night.
  • highs 43-45 lows 37-30.
  • Partly cloudy with a slight (20%) chance of rain a bit warmer Thursday (Winter Solstice 7:27 PM) and in the evening, a (40%) chance of rain and snow Thursday night,
  • Mostly cloudy with a good (50%) of AM rain and snow, rain and snow likely (70%) and a bit cooler Friday afternoon, evening snow and rain likely (70%), mostly cloudy with good (50%) chance of rain and snow late at night,
  • A mix of clouds and sun and a bit cooler with a good (50%) chance of rain and snow Saturday, partly cloudy with a (30%) chance of evening rain and snow, a slight (20%) chance of rain and snow late Saturday night,
  • Partly cloudy with a (30%) chance of AM snow and a slight (20%) chance of rain, then a (30%) chance of rain and a bit warmer Sunday afternoon.
  • snow level 6,000 ft. Thursday, 6,500 ft. Thursday night, 5,000 ft. Friday, 3,500 ft. Friday night, then 3,000 ft. Saturday through Sunday.
  • highs 45-33 warming to 37 Sunday lows 29-22.