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Wind Advisory

URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
218 PM PST Mon Dec 8 2025

ORZ041-510-WAZ024-521-090700-
/O.CON.KPDT.WI.Y.0030.000000T0000Z-251209T1500Z/
Eastern Columbia River Gorge of Oregon-North Central Oregon-
Eastern Columbia River Gorge of Washington-Simcoe Highlands-
Including the cities of Arlington, White Salmon, Bickleton,
Dufur, Moro, Goldendale, The Dalles, and Maupin
218 PM PST Mon Dec 8 2025

...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY...

* WHAT...Southwest winds 25 to 35 mph with gusts 45 to 60 mph
  expected.

* WHERE...Eastern Columbia River Gorge of Oregon and Washington,
  North Central Oregon, and Simcoe Highlands.

* WHEN...Until 7 AM PST Tuesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.

&&

$$
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
218 PM PST Mon Dec 8 2025

ORZ044-507-508-090700-
/O.CON.KPDT.WI.Y.0030.251209T0000Z-251209T1500Z/
Lower Columbia Basin of Oregon-Foothills of the Northern Blue
Mountains of Oregon-Foothills of the Southern Blue Mountains of
Oregon-
Including the cities of Heppner, Ione, Boardman, Athena, Condon,
Pendleton, Fossil, Hermiston, and Pilot Rock
218 PM PST Mon Dec 8 2025

...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY...

* WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph
  expected.

* WHERE...Foothills of the Blue Mountains of Oregon, and Lower
  Columbia Basin of Oregon.

* WHEN...Until 7 AM PST Tuesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.

&&

$$
URGENT - WEATHER MESSAGE
National Weather Service Medford OR
1223 PM PST Mon Dec 8 2025

ORZ030-031-091300-
/O.CON.KMFR.WI.Y.0022.251209T0300Z-251210T0600Z/
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the following locations...Valley Falls and Paisley
1223 PM PST Mon Dec 8 2025

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 PM
PST TUESDAY...

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph
  expected.

* WHERE...Lake County and eastern Klamath County including Winter
  Rim and Highway 31 from Silver Lake to Valley Falls, including
  Summer Lake.

* WHEN...From 7 PM this evening to 10 PM PST Tuesday.

* IMPACTS...Gusty winds will blow around unsecured objects.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.

&&

$$

MAS

Flood Watch

Flood Watch
National Weather Service Missoula MT
1253 PM MST Mon Dec 8 2025

.Near-record precipitation is possible this week as two Atmospheric
Rivers will move through the region. The first one arrives today and
continues through Tuesday, followed by a second, stronger one
Tuesday night through Thursday. Between 4 and 10 inches of moderate
to heavy rain are expected in the mountains. For some locations,
near record rainfall amounts are possible. The rain, falling on the
current snowpack, combined with mild nighttime temperatures will
increase snowmelt. Flows in rivers may increase quickly and reach
critical levels.

IDC035-049-092115-
/O.EXT.KMSO.FA.A.0009.251209T0000Z-251212T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clearwater-Idaho-
1253 PM MST Mon Dec 8 2025 /1153 AM PST Mon Dec 8 2025/

...FLOOD WATCH NOW IN EFFECT FROM 5 PM MST /4 PM PST/ THIS AFTERNOON
THROUGH THURSDAY AFTERNOON...

* WHAT...Flooding caused by rain and snowmelt continues to be
  possible.

* WHERE...Portions of central and panhandle Idaho, including the
  following counties, in central Idaho, Idaho. In panhandle Idaho,
  Clearwater.

* WHEN...From 5 PM MST  /4 PM PST/ this afternoon through Thursday
  afternoon.

* IMPACTS...Creeks and streams may rise out of their banks. Flooding
  may occur in poor drainage and urban areas. Storm drains and
  ditches may become clogged with debris. People, structures, and
  roads located below steep slopes, in canyons, and near the mouths
  of canyons may be at risk from landslides.

* ADDITIONAL DETAILS...
  - A prolonged atmospheric river is expected to bring periods of
    heavy rain to Idaho and Clearwater Counties, Monday night
    through Thursday. Rising snow levels will lead to a rain on
    snow event for elevations below 7,000 feet Monday night into
    Tuesday morning. The precipitation rates will briefly
    decrease Tuesday afternoon, before a second surge of moisture
    arrives Tuesday night into Thursday morning with snow levels
    rising to near 8,000 feet. By Thursday, significant
    precipitation totals are forecast, with 2 to 5 inches in the
    valleys and 5 to 10 inches in the mountains, with locally
    higher totals over mountain crests. Landslides in areas of
    steep terrain and minor flooding in urban and poor drainage
    areas is possible.
  - https://www.weather.gov/mso/hydrology

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop. Monitor basements for water
intrusion. You may want to preemptively shovel snow away from your
home.

&&

$$
Flood Watch
National Weather Service Pendleton OR
249 AM PST Mon Dec 8 2025

WAZ026-027-521>523-091515-
/O.NEW.KPDT.FA.A.0002.251208T1500Z-251212T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kittitas Valley-Yakima Valley-Simcoe Highlands-Upper Slopes of
the Eastern Washington Cascades Crest-Lower Slopes of the Eastern
Washington Cascades Crest-
Including the cities of Cle Elum, Ellensburg, Sunnyside,
Bickleton, Roslyn, Yakima, Cliffdell, Easton, Goldendale, Naches,
Thorp, Toppenish, and Appleton
249 AM PST Mon Dec 8 2025

...FLOOD WATCH IN EFFECT FROM 7 AM PST THIS MORNING THROUGH FRIDAY
MORNING...

* WHAT...Flooding caused by excessive rainfall is possible.

* WHERE...Portions of central and south central Washington,
  including the following areas, in central Washington, Kittitas
  Valley, Simcoe Highlands and Yakima Valley. In south central
  Washington, Lower Slopes of the Eastern Washington Cascades Crest
  and Upper Slopes of the Eastern Washington Cascades Crest.

* WHEN...From 7 AM PST this morning through Friday morning. Area
  rivers and streams are expected to reach their highest levels
  between Wednesday and Friday.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.
  Creeks and streams may rise out of their banks.

* ADDITIONAL DETAILS...
  - An atmospheric river moving into the region this week is
    expected to make for heavy rainfall along the Cascades.
    Runoff from this rain, combined with lowland rain, will make
    for rises along area rivers, including the Klickitat, Naches,
    and Yakima Rivers.
  - Go to http://www.weather.gov/safety/flood for flood safety
    tips and resources.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

&&

$$

CE

Hydrologic Outlook

Hydrologic Outlook
MTC039-063-081-102100-

Hydrologic Outlook
National Weather Service Missoula MT
122 PM MST Mon Dec 8 2025


...NEAR RECORD HEAVY PRECIPITATION TO BRING SMALL STREAM RISES, RISK
FOR ROCK AND LANDSLIDES, AND MINOR FLOODING THIS WEEK...

A prolonged atmospheric river is expected to bring periods of heavy
rain for western Montana Monday night through Thursday. Rising snow
levels will lead to a rain-on-snow event for elevations below 7,000
feet Monday night into Tuesday morning. Precipitation rates will
briefly decrease Tuesday afternoon before a second surge of moisture
arrives Tuesday night into Thursday. During the second surge, snow
levels will be lower initially, ranging from 3,500 to 5,000 feet
with some slushy snow accumulations across northwest Montana
valleys, but will then rise to 6,000 to 8,000 feet Wednesday into
Thursday. By Thursday, significant precipitation totals are
forecast, with 1 to 4 inches in the valleys and 5 to 8 inches in the
mountains, with locally higher totals over mountain crests.

Landslides in areas of steep terrain and minor flooding in urban and
poor-drainage areas are possible. Storm drains and ditches may
become clogged with debris. You may want to preemptively shovel snow
away from your homes. Watch basements for moisture intrusion.
$$
U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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