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Tim Chuey Weather

by | Nov 18, 2023 | Weather

November 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 11 PM MST TONIGHT FOR THE OREGON LOWER TREASURE VALLEY.
  • A  WINTER WEATHER ADVISORY IS IN EFFECT FROM 7 PM THIS EVENING UNTIL 5 PM SUNDAY ABOVE 4,000 FT. FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
  • A WINTER WEATHER ADVISORY IS IN EFFECT FROM 7 PM TODAY UNTIL 10 AM SUNDAY ABOVE 4,000 FT. FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS AND THE SOUTHERN OREGON CASCADES.
  • A WINTER WEATHER ADVISORY IS IN EFFECT FROM 7 PM THIS EVENING UNTIL 5 PM SUNDAY ABOVE 4,500 FT. FOR THE EAST SLOPES OF THE OREGON CASCADES.

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

  • A cold front has changed our weather. The graphics for days 1-3  show the frontal system pushing through Pacific Northwest . The graphics for days 3-7   Wednesday through Sunday show a cold front slides in Wednesday and then another front tries to come in through the back door (moving NE to SW) next Saturday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with evening rain, showers likely (70%) late tonight (0.50 in. of rain possible),
  • AM clouds and sun with showers likely (70%) and a (30%) chance of drizzle, a mix of clouds and a bit cooler with a good (50%) chance of showers and a slight (20%) chance of drizzle Sunday afternoon (under 0.10 in. of rain possible), partly cloudy and colder with patchy frost late Sunday night,
  • Partly cloudy with patchy AM frost, partly cloudy and a bit cooler Monday afternoon, mostly cloudy with a slight (20%) chance of drizzle late at night,
  • Mostly cloudy with a slight (20%) chance of drizzle and a good (50%) chance of rain and a bit warmer Tuesday afternoon, then cloudy with a good (50%) chance of rain and drizzle Tuesday night.
  • lows 42-33 warming to 43 Tuesday night highs 53-50 warming to 55 Tuesday.
  • Cloudy and a bit cooler with a (30%) chance of drizzle and a good (50%) chance of rain Wednesday afternoon and evening, mostly cloudy with a slight (20%) chance of drizzle late Wednesday night,
  • A mix of clouds and sun with a slight (20%) chance of drizzle and a bit cooler Thursday afternoon (Thanksgiving Day), partly cloudy at night,
  • Partly cloudy Friday, partly cloudy Friday night,
  • Then partly cloudy and a bit cooler Saturday.
  • highs 52-48 lows 39-32. (seasonal averages high 52 low 37)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with evening rain and a slight (20%) chance of thunderstorms, rain likely (70%) with a slight (20%) of thunderstorms late tonight (0.25 in. of rain possible),
  • Mostly cloudy with AM rain likely (70%) and a slight (20%) chance of thunderstorms, a slight (20%) chance of showers and slightly cooler Sunday afternoon (under 0.10 in. of rain possible), mostly cloudy with patchy dense evening fog, just mostly cloudy late Sunday night,
  • AM clouds, sunny and a bit warmer Monday afternoon, mostly cloudy at night,
  • Mostly cloudy and a bit warmer with a (20%) chance of rain Tuesday, then a (40%) chance of rain Tuesday night.
  • lows 43-36 warming to 47 Tuesday night highs 52-57.
  • Mostly cloudy and a bit cooler with a (30%) chance of rain Wednesday, a (50%) chance of rain Wednesday night,
  • Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit cooler with a slight (20%) chance of rain Thursday afternoon and evening, partly cloudy with a slight (20%) chance of evening rain, just mostly cloudy late at night,
  • Some AM clouds, sunny and a bit cooler Friday afternoon, mostly clear in the evening, partly cloudy late Friday night,
  • Some AM clouds, then sunny Saturday afternoon.
  • highs 53-49 lows 42-34. (seasonal averages high 53 low 40)

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

  • Mostly cloudy with evening coastal rain and a slight (20%) chance of thunderstorms with a good (50%) of coastal rain and a slight (20%) chance of thunderstorms late tonight while inland evening showers and a good (50%) chance inland showers late tonight (0.50 in. of rain possible),
  • Mostly cloudy with AM coastal rain likely (70%) and just partly cloudy at the shore and a bit warmer Sunday afternoon while inland AM rain likely (70%) and a slight (20%) chance of inland showers and a bit cooler Sunday afternoon (under 0.10 in. of rain possible), becoming mostly clear  Sunday night,
  • Sunny start, partly cloudy and a bit warmer Monday afternoon, mostly cloudy at night,
  • Mostly cloudy and a bit cooler with a good (50%) chance of rain Tuesday, then a good (50%) chance of rain Tuesday night.
  • lows 44-39 warming to warming back to 44 Monday night highs 58-64 cooling to 62 Tuesday night.
  • Mostly cloudy and a bit cooler with a good (50%) chance of rain Wednesday, a good (50%) chance of rain Wednesday night,
  • Partly cloudy and a bit cooler with a slight (20%) chance of rain Thursday (Thanksgiving Day), a slight (20%) chance of rain at night,
  • Mostly sunny Friday, mostly clear Friday night,
  • Then mostly sunny Saturday.
  • highs 60-58 lows 43-37. (seasonal averages high 56 low 43)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with evening rain, snow and rain showers late tonight (1 in. of rain possible, 6-10 in. of snow possible, snow possibly heavy at times late tonight),
  • Mostly cloudy with AM snow and rain showers, a good (50%) chance of rain and snow showers and a bit cooler Sunday afternoon (0.50 in. of rain possible, 3-7 in. of snow possible, AM snow possibly heavy at times), partly cloudy with a (40%) chance of evening snow showers and a slight (20%) chance of drizzle (little or no snow accumulation expected), just partly cloudy late Sunday night,
  • Mostly sunny and a bit warmer Monday, partly cloudy in the evening, mostly cloudy late at night,
  • A mix of clouds and sun with a (40%) chance of drizzle and rain likely (70%) and a bit warmer Tuesday afternoon, mostly cloudy with a good (50%) chance of evening drizzle and rain likely (70%), then a good (50%) chance of drizzle and rain late Tuesday night.
  • snow level 5,000 ft. falling to 4,000 ft. late tonight, 3,000 ft. Sunday, 2,500 ft. Sunday night, free air freezing level 9,000 ft. rising to 12,000 ft  Monday afternoon, 13,000 ft. Monday night, then snow level 7,500 ft. Tuesday and Tuesday night.
  • lows 27-22 warming to 29 Monday night highs 48-32 warming to 43 Monday.
  • Mostly cloudy with a good (50%) chance of AM rain, drizzle and snow, rain and snow likely (70%) and a bit cooler Wednesday afternoon and in the evening, a good (50%) chance snow, drizzle, freezing drizzle late Wednesday night,
  • A mix of clouds and sun with a good (50%) chance of drizzle, snow and freezing drizzle and a bit cooler Thursday (Thanksgiving Day), partly cloudy with a slight (20%) chance of drizzle, freezing drizzle and snow at night,
  • Mostly cloudy with a slight (20%) chance of AM freezing drizzle, partly cloudy and a bit cooler with a slight (20%) chance of drizzle and snow Friday afternoon, a slight (20%) chance of drizzle, freezing drizzle and snow late Friday night,
  • Then partly cloudy Saturday.
  •  snow level 6,500 ft. Wednesday, 5,000 ft. Wednesday night and Thursday, then 4,000 ft. Thursday night through Saturday.
  •  highs 43-52 cooling to 38 Thursday lows 30-33 cooling back to 30 Wednesday night.