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Tim Chuey Weather

by | Dec 13, 2023 | Weather

December 13, 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 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.

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. Now short-lived High Pressure drys us out for a couple days. 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   Saturday through Wednesday show active frontal systems moving through the Eastern Pacific region.

________________

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with patchy fog and a good (50%) chance of rain tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with patchy fog and a good (50%) chance of rain and a bit warmer Thursday (under 0.10 in. of rain possible), partly cloudy with patchy evening fog, mostly cloudy with patchy fog late Thursday night,
  • Mostly cloudy with patchy fog and a bit cooler Friday, mostly cloudy with patchy fog at night,
  • Patchy AM fog with a mix of clouds and sun Saturday, mostly cloudy with patchy evening fog and a slight (20%) chance of rain, then mostly cloudy with patchy fog and a (40%) chance of rain late Saturday night.
  • lows 40-34 warming to 38 Saturday night highs 53-49.
  • Cloudy and a bit warmer with a good (50%) chance of rain Sunday, rain likely (70%) Sunday night,
  • Mostly cloudy and a bit warmer with rain Monday, rain at night,
  • Mostly cloudy with rain likely (70%) Tuesday, a good (50%) chance of rain Tuesday night,
  • Then mostly cloudy and a bit cooler with a good (50%) chance of rain Wednesday.
  • highs 50-53 cooling to 49 Wednesday lows 42-44 cooling to 40 Tuesday night. (seasonal averages high 47 low 34)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with a slight (20%) chance of rain late tonight,
  • Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit cooler Thursday afternoon and evening,  just mostly cloudy Thursday night,
  • Mostly cloudy Friday, mostly cloudy at night,
  • Mostly cloudy Saturday, then mostly cloudy with a slight (20%) chance of rain late Saturday night.
  • lows 44-39 warming to 42 Saturday night highs 54-52.
  • Mostly cloudy with a (40%) chance of AM rain, rain likely (70%) and a bit warmer Sunday afternoon, rain Sunday night,
  • Mostly cloudy with rain Monday and in the evening, rain likely (70%) late Monday night,
  • Mostly cloudy and a bit cooler with rain likely (70%) Tuesday, a good (50%) chance of rain Tuesday night,
  • Then mostly cloudy and a bit cooler with a (40%) chance of rain Wednesday.
  • highs 54-50 lows 46-42. (seasonal averages high 48 low 37)

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

  • Mostly cloudy with a slight (20%) chance of rain late tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with a slight (20%) chance of coastal rain and a bit warmer Thursday while a slight (20%) chance of inland AM rain and a bit warmer Thursday (under 0.10 in. of rain possible), just partly cloudy Thursday night,
  • Mostly cloudy and a bit warmer Friday, mostly cloudy Friday night,
  • Mostly cloudy and a bit warmer Saturday, then mostly cloudy with a slight (20%) chance of rain Saturday night.
  • lows 45-42 warming to 44 Saturday night highs 60-63.
  • Mostly cloudy with rain likely (70%) a bit cooler Sunday, rain Sunday night,
  • Mostly cloudy and a bit cooler with rain Monday, rain at night,
  • Mostly cloudy and a bit cooler with rain Tuesday, evening rain likely (70%), a good (50%) chance of rain Tuesday night,
  • Then mostly cloudy with a good (50%) chance of rain Wednesday.
  • highs 60-58 lows 47-43. (seasonal averages high 53 low 40)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy tonight,
  • A mix of clouds and sun and a bit warmer with a slight (20%) chance of rain Thursday afternoon, partly cloudy Thursday night,
  • A mix of clouds and sun with patchy fog Friday, partly cloudy at night,
  • Partly cloudy and a bit warmer Saturday, partly cloudy with a slight (20%) chance of evening rain, then mostly cloudy with a (40%) chance of rain Saturday night.
  • free air freezing level 12,000 ft. falling to 11,000 ft. tonight, snow level 5,000 ft. Thursday, free air freezing 9,000 ft. rising to 10,000 ft. late Thursday night, 10,000 ft. rising to 11,000 ft. Friday afternoon, t11,000 ft. Friday night, 11,000 ft. Saturday afternoon, then snow level 7,000 ft. Saturday night.
  • lows 29-32 highs 44-46.
  • Mostly cloudy with a (20%) chance of AM rain, rain likely (70%) and a bit cooler Sunday afternoon, rain Sunday night,
  • Mostly cloudy with rain Monday and at night,
  • Mostly cloudy with AM snow likely (70%),  a bit cooler with rain likely (70%) Tuesday afternoon, evening rain and snow likely (70%), a (40%) chance of rain and snow late Tuesday night,
  • Then mostly cloudy and a bit cooler with a good (50%) chance of rain and snow Wednesday.
  • snow level 7,000 ft. Sunday and Sunday night, 6,500 ft. Monday and Monday night, 6,000 ft. Tuesday and Tuesday night, then 5,500 ft. Wednesday.
  • highs 42-35 lows 33-27.