Follow EDN on Social Media |

November 2, 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

  • A FLASH FLOOD WATCH IS IN EFFECT FROM FRIDAY EVENING THROUGH THROUGH SATURDAY EVENING FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY (SMITH RIVER COMPLEX BURN SCAR).
  • A WIND ADVISORY IS IN EFFECT FROM 11 AM UNTIL 11 PM SATURDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

HEALTH ADVISORIES

  • A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR LAKE  EWAUNA 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 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 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 ICONTINUES 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

Upper Level High Pressure (“Arch” shape) moves eastward as Upper Level Low Pressure (“U” shape) takes over. The graphics for days 1-3  show the a complex frontal system moving through the Pacific Northwest today a4nd another front sliding through Saturday. The graphics for days 3-7   Sunday through Thursday show a complex frontal system will approaching the coast Tuesday. Yet another front will be just offshore next Thursday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with a good (50%) chance of evening showers, a slight (20%) chance of showers with patchy fog late tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with patchy AM fog, rain and a bit warmer Friday afternoon, rain Friday night (under 0.10 in. of rain possible),
  • Mostly cloudy with AM and a slight (20%) chance of thunderstorms, showers and a bit cooler Saturday afternoon (0.25 in. of rain possible), showers ()with a slight (20%) chance of thunderstorms Saturday night (Fall Back at bedtime),
  • Mostly cloudy and a under 0.10 in. of ra4in possiblebit cooler with rain Sunday, rain with a slight (20%) chance of rain evening thunderstorms, rain with a slight (20%) of thunderstorms late Sunday night.
  • lows 52-58 cooling to 49 Saturday night and Sunday night highs 67-60.
  • Mostly cloudy with AM showers and a slight (20%) chance of thunderstorms, showers with a slight (20%) chance of thunderstorms  and a bit cooler Monday afternoon, showers with a slight (20%) chance of evening thunderstorms, rain late Monday night,
  • Mostly cloudy with rain Tuesday, evening rain likely (70%), a (30%) chance of rain late at night,
  • A mix of clouds and sun with a (40%) chance of rain Wednesday, partly cloudy with a slight (20%) chance of rain Wednesday night,
  • Mostly cloudy with a slight (?20%) chance of AM rain, then rain likely (70%) Thursday afternoon.
  • highs near 55 lows 46-37 (seasonal averages high 57 low 39)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with a (40%) chance of evening showers, patchy fog tonight (under 0.10 in. of rain possible),
  • Patchy AM fog, mostly cloudy and a bit warmer with a (40%) chance of rain Friday afternoon, rain Friday night (0.50 in. of rain possible),
  • Mostly cloudy with AM showers, showers and slightly cooler with a slight (20%) chance of thunderstorms Saturday afternoon and evening, rain late Saturday night (Fall Back at bedtime),
  • Mostly cloudy with AM rain likely (70%), rain and a bit cooler Sunday afternoon, then rain Sunday night.
  • lows 54-59 cooling to 50 Sunday night highs 69-60.
  • Mostly cloudy and a bit cooler with rain Monday, rain Monday night,
  • Mostly cloudy with rain 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 slight (20%) chance of evening rain, mostly cloudy with a slight (20%) of rain late Wednesday night,
  • Mostly cloudy with a slight (20%) chance of AM rain, then rain likely (70%) Thursday afternoon.
  • highs near 56 lows 45-39 (seasonal averages high 59 low 42)

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

  • Mostly cloudy with a (40%) chance of evening rain, just mostly cloudy late tonight,
  • Mostly cloudy with rain and a bit warmer Friday afternoon (under 0.10 in. of rain possible), coastal evening rain with coastal rain and a slight (20%) chance of thunderstorms late tonight while inland rain late tonight (under 1.00 in. of rain possible),
  • Mostly cloudy and a bit warmer and breezy (Wind: 15-25 mph, morning gusts to 40 mph) Saturday, evening showers, rain late Saturday night (Fall Back at bedtime),
  • Mostly cloudy with rain and breezy and a bit cooler Sunday, then rain and breezy Sunday night.
  • lows 53-57 cooling to 52 Saturday night and Sunday night highs 66-68 cooling to 65 Sunday.
  • Mostly cloudy and a bit cooler with rain and breezy Monday and Monday night,
  • Mostly cloudy with rain Tuesday, evening rain likely (70%), a good (50%) chance of rain late at night,
  • Mostly cloudy with a (40%) chance of rain Wednesday, partly cloudy with a slight (20%) chance evening rain, mostly cloudy with a slight (20%) chance of rain late Wednesday night,
  • Mostly cloudy with a slight (20%) chance of AM rain, then rain likely (70%) Thursday afternoon.
  • highs near 62 lows 48-43 (seasonal averages high 60 low 45)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with evening showers likely (70%), a slight (20%) chance of showers late tonight,
  • A mix of clouds and sun with rain and a bit warmer Friday afternoon, rain Friday night,
  • Mostly cloudy with AM rain and a slight (20%) chance of thunderstorms, showers and breezy (Wind: SW 15-25 mph gusts to 40 mph) and a bit cooler Saturday afternoon, showers with a slight (20%) of thunderstorms at night (Fall Back at bedtime),
  • Mostly cloudy with showers and a bit cooler Sunday, then showers Sunday night.
  • snow level 7,500 ft. tonight, 7,000 ft. Friday, above 8,000 ft. Friday night and Saturday, then 6,500 ft. Saturday night through Sunday night.
  • lows 37-42 cooling to 36 Saturday night highs 48-54 cooling to 49 Saturday.
  • Mostly cloudy with AM snow showers and rain showers with a slight (20%) chance of thunderstorms (snow possibly heavy at times), and a bit cooler with showers and a slight (20%) chance of thunderstorms Monday afternoon and evening, rain and snow late Monday night,
  • Mostly cloudy with rain and snow and a bit cooler Tuesday and in the evening, a (30%) chance of rain and snow late Tuesday night,
  • A mix of clouds and sun with a good (50%) chance of rain and snow and a bit warmer Wednesday, partly cloudy with a slight (20%) chance of rain and snow Wednesday night,
  • Clouds and sun with a slight (20%) chance of AM rain and snow, then a good (50%) chance of rain and snow and a bit warmer Thursday afternoon.
  • snow level 5,500 ft. Monday, 5,000 ft. Monday night and Tuesday, 4,500 ft. Tuesday night and Wednesday, 5,000 ft. Wednesday night, then 4,500 ft. Thursday.