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Tim Chuey Weather

by | Dec 14, 2023 | Weather

December 14, 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 10 AM SUNDAY FOR THE CENTRAL WILLAMETTE VALLEY AND THE SOUTH WILLAMETTE VALLEY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 AM SATURDAY 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 FRIDAY FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
  • A WIND ADVISORY IS IN EFFECT FROM 4 AM FRIDAY UNTIL 10 AM SATURDAY 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 front. The graphics for days 1-3  show a cold front is that was expected to move in tonight is  slowing down. That’s why we saw some sunshine this afternoon. The graphics for days 3-7   Sunday through Thursday show active frontal systems moving through the Eastern Pacific region.

________________

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Partly cloudy with patchy evening fog, mostly cloudy with areas of fog late tonight,
  • Areas of AM fog, mostly cloudy with patchy fog and a bit cooler Friday afternoon, mostly cloudy with patchy fog Friday night,
  • Patchy AM fog with a mix of clouds and sun Saturday, partly cloudy with patchy fog at night,
  • Patchy AM fog, mostly cloudy with a slight (20%) chance of rain Sunday afternoon, cloudy with a good (50%) chance of evening rain, then rain likely (70%) with patchy fog late Sunday night.
  • lows 36-34 warming to 39 Sunday night highs near 47.
  • Mostly cloudy and a bit warmer with rain and patchy fog Monday and in the evening, rain Monday night,
  • Patchy AM fog, mostly cloudy and a bit warmer with rain Tuesday, a good (50%) chance of rain at night,
  • Mostly cloudy with patchy fog and a (30%) chance of AM rain,  a bit cooler with patchy fog and a slight (20%) chance of rain Wednesday afternoon, patchy fog with a slight (20%) chance of evening rain, mostly cloudy with patchy fog late Wednesday night,
  • Then mostly cloudy and a bit cooler with a slight (20%) chance of rain Thursday.
  • highs 52-57 cooling to 50 Thursday cooling to 49 Wednesday lows 46-39. (seasonal averages high 46 low 34)

Forecast for the Umpqua Valley including Roseburg:

  • Becoming mostly cloudy with patchy fog late tonight,
  • Mostly cloudy with patchy AM fog, partly cloudy and a bit cooler Friday afternoon, mostly cloudy late Friday night,
  • AM clouds, sunny and a bit warmer Saturday afternoon, partly cloudy with a slight (20%) chance of rain late at night,
  • Mostly cloudy with a slight (20%) chance of rain and a bit cooler Sunday, then rain Sunday night.
  • lows 39-44 highs 50-55 cooling to 53 Sunday.
  • Mostly cloudy and a bit warmer with rain Monday, rain Monday night,
  • Mostly cloudy with rain Tuesday, a good (50%) chance of rain at night,
  • Mostly cloudy and a bit cooler with a (30%) chance of rain Wednesday, a slight (20%) chance of rain Wednesday night,
  • Mostly cloudy with a slight (20%) chance of AM rain, then partly cloudy with a slight (20%) chance of rain Thursday afternoon.
  • highs 56-54 lows 49-43. (seasonal averages high 48 low 37.

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

  • Mostly clear this evening, mostly cloudy late tonight,
  • Mostly cloudy and a bit warmer Friday, mostly cloudy Friday night,
  • Partly cloudy Saturday, partly cloudy with a slight (20%) chance of rain late at night,
  • Mostly cloudy with a good (50%) of rain and a bit cooler Sunday, then rain Sunday night.
  • lows 42-46 highs 63-60.
  • Mostly cloudy with rain Monday, rain Monday night,
  • Mostly cloudy with rain Tuesday, evening rain likely (70%), a good (50%) chance of rain late at night,
  • Mostly cloudy and a bit cooler with a good (50%) chance of rain Wednesday, partly cloudy with a slight (20%) chance of evening rain, mostly cloudy with a slight (20%) chance of rain late Wednesday night,
  • Then partly cloudy with a slight (20%) chance of rain Thursday.
  • highs 62-60 lows 49-43. (seasonal averages high 53 low 40)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy tonight,
  • A mix of clouds and sun and a bit cooler Friday, mostly cloudy Friday night,
  • Partly cloudy and a bit warmer Saturday, partly cloudy at night,
  • Clouds and sun with a (20%) chance of AM rain, a mix of clouds and sun with a (40%) chance of rain and a bit cooler Sunday afternoon, a good (50%) chance of evening rain, then rain likely (70%) Sunday night.
  • free air freezing 9,000 ft. rising to 10,000 ft. late tonight, 10,000 ft. rising to 11,000 ft. Friday afternoon, 11,000 ft. Friday night through Saturday night, snow level 7,000 ft. Sunday, then 8,000 ft. Sunday night.
  • lows 28-34 highs 40-47 cooling to 44 Sunday.
  • Mostly cloudy and a bit cooler with rain Monday and Monday night,
  • Mostly cloudy with rain Tuesday, evening rain likely (70%), a (40%) chance of rain and snow late at night,
  • Mostly cloudy with a good (50%) chance of rain and snow Wednesday, a (40%) chance of evening rain and snow, a slight (20%) chance of rain and snow late Wednesday night,
  • Clouds and sun with a slight (20%) chance of AM rain and snow, then a (30%) chance of snow Thursday afternoon.
  • snow level 7,500 ft. Monday, 7,000 ft. Monday night and Tuesday,  6,500 ft. Tuesday night, then 6,000 ft. Wednesday through Thursday.
  • highs near 42 lows 35-29.