Wind Advisory
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
905 AM PST Tue Dec 30 2025
ORZ049-310700-
/O.NEW.KPDT.WI.Y.0036.251230T1705Z-251231T0700Z/
Grande Ronde Valley-
Including the cities of La Grande, Cove, Union, and Elgin
905 AM PST Tue Dec 30 2025
...WIND ADVISORY IN EFFECT UNTIL 11 PM PST THIS EVENING FOR LADD AND
PYLES CANYONS...
* WHAT...South winds 25 to 35 mph with gusts up to 55 mph for Ladd
and Pyles Canyons.
* WHERE...Grande Ronde Valley.
* WHEN...Until 11 PM PST this evening.
* 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.
&&
$$
Air Stagnation Advisory
URGENT - WEATHER MESSAGE
National Weather Service Medford OR
134 PM PST Tue Dec 30 2025
ORZ023>026-029>031-010000-
/O.CON.KMFR.AS.Y.0005.000000T0000Z-260101T0000Z/
Central Douglas County-Eastern Curry County and Josephine County-
Eastern Douglas County Foothills-Jackson County-Klamath Basin-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the following locations...Sutherlin, Myrtle Creek,
Beatty, Gilchrist, Winchester, Fort Rock, Butte Falls, Elkton,
Shady Cove, Midland, Crescent, Jacksonville, Umpqua, Glendale,
Drain, Grants Pass, Cave Junction, Merlin, New Pine Creek, Olene,
Wilderville, Green, Lakeview, Chemult, Klamath Falls, Roseburg,
Canyonville, Applegate, Paisley, Medford, Steamboat, Altamont,
Bly, Ashland, Gold Hill, Toketee Falls, Valley Falls, Rogue
River, Adel, and Sprague River
134 PM PST Tue Dec 30 2025
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
WEDNESDAY...
* WHAT...Air quality is likely to worsen through Wednesday
afternoon. This is due to an inversion and stagnant air conditions
near the surface that will trap pollutants.
* WHERE...Valley areas, both west of the Cascades in Jackson,
Josephine and Douglas counties, and east of the Cascades in
Klamath and Lake counties.
* WHEN...Until 4 PM PST Wednesday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with respiratory illness should follow their physicians
advice for dealing with high levels of air pollution during periods
of stagnant air.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Boise ID
125 PM MST Tue Dec 30 2025
IDZ011-013-311300-
/O.EXB.KBOI.AS.Y.0005.000000T0000Z-260103T1500Z/
West Central Mountains-Boise Mountains-
Including the cities of Cascade, Big Creek, Pine, Cuprum, Bear,
McCall, Prairie, Warm Lake, Anderson Dam, and Ola
125 PM MST Tue Dec 30 2025
...AIR STAGNATION ADVISORY IN EFFECT UNTIL 8 AM MST SATURDAY...
* WHAT...A period of stagnant air, with light winds and little
vertical mixing. This is due to an inversion near the surface that
will continue to trap pollutants.
* WHERE...Boise Mountains and West Central Mountains.
* WHEN...Until 8 AM MST Saturday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with respiratory illness should follow their physicians
advice for dealing with high levels of air pollution during periods
of stagnant air.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Boise ID
125 PM MST Tue Dec 30 2025
IDZ012-014-028-033-ORZ061-063-064-311300-
/O.EXT.KBOI.AS.Y.0005.000000T0000Z-260103T1500Z/
Lower Treasure Valley-Upper Treasure Valley-Camas Prairie-Upper
Weiser River-Harney County-Malheur County-Oregon Lower Treasure
Valley-
Including the cities of Boise, Hill City, Burns, Dunnean,
Fairfield, Soldier, New Princeton, Venator, Corral, Blaine,
Nampa, Malheur City, Fruitvale, Nyssa, Diamond, Council,
Caldwell, Indian Valley, Goodrich, Selby, Ontario, Crane,
Buchanan, Mesa, Glendale, and Cambridge
125 PM MST Tue Dec 30 2025 /1225 PM PST Tue Dec 30 2025/
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 8 AM MST /7 AM PST/
SATURDAY...
* WHAT...A period of stagnant air, with light winds and little
vertical mixing. This is due to an inversion near the surface that
will continue to trap pollutants.
* WHERE...Portions of southwest Idaho and southeast Oregon.
* WHEN...Until 8 AM MST /7 AM PST/ Saturday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with respiratory illness should follow their physicians
advice for dealing with high levels of air pollution during periods
of stagnant air.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
905 AM PST Tue Dec 30 2025
ORZ044-507-508-510-511-WAZ026>029-310700-
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260101T2000Z/
Lower Columbia Basin of Oregon-Foothills of the Northern Blue
Mountains of Oregon-Foothills of the Southern Blue Mountains of
Oregon-North Central Oregon-Central Oregon-Kittitas Valley-Yakima
Valley-Lower Columbia Basin of Washington-Foothills of the Blue
Mountains of Washington-
Including the cities of Connell, Naches, Dayton, Hermiston,
Dufur, Moro, Prosser, Ione, Madras, Sunnyside, Prineville,
Waitsburg, Yakima, Walla Walla, Condon, Ellensburg, Pilot Rock,
Fossil, Thorp, Maupin, Athena, Toppenish, Pendleton, Tri-Cities,
Bend, Boardman, Redmond, and Heppner
905 AM PST Tue Dec 30 2025
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST
THURSDAY...
* WHAT...Stagnant conditions will have the potential to trap
pollutants near the ground and deteriorate air quality.
* WHERE...Foothills of the Blue Mountains of Oregon and Washington,
Lower Columbia Basin of Oregon and Washington, North Central
Oregon, Central Oregon, Kittitas Valley, and Yakima Valley.
* WHEN...Until noon PST Thursday.
* IMPACTS...Periods of air stagnation can lead to the buildup of
pollutants near the surface, potentially leading to poor air
quality.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
An Air Stagnation Advisory indicates that due to limited movement of
an air mass across the advisory area, pollution has the potential to
increase to dangerous levels. Persons with respiratory illness
should follow their physicians advice for dealing with high levels
of air pollution during periods of stagnant air, state air quality
agencies highly recommend that no outdoor burning occur and that
residential wood burning devices be limited as much as possible.
According to state air quality agencies, prolonged periods of
stagnant air can hold pollutants close to the ground, where people
live and breathe. Check with your local burn agency for any current
restrictions in your area.
&&
$$
MC
URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
1145 AM PST Mon Dec 29 2025
IDZ004-026-027-WAZ032-036>038-041-043-047>049-012000-
/O.NEW.KOTX.AS.Y.0002.251229T1945Z-260101T2000Z/
Central Panhandle Mountains-Lewiston Area-Lewis and Southern Nez
Perce Counties-Lower Garfield and Asotin Counties-Spokane Area-
Northeast Mountains-Okanogan Highlands-Wenatchee Area-Okanogan
Valley-Central Chelan County-Western Chelan County-Western
Okanogan County-
Including the cities of Spokane Valley, Winthrop, Pinehurst,
Wauconda, Oroville, Clarkston, Brewster, Tiger, Boulder Creek
Road, Gifford, Kamiah, Disautel Pass, Okanogan, Deer Park,
Highway 20 Wauconda Summit, St. Maries, Soldiers Meadow Road,
Chelan, Loup Loup Pass, Culdesac, Tonasket, Sherman Pass,
Conconully, Fernwood, Chewelah, Holden Village, Kellogg, Chesaw
Road, Methow, Mazama, Dobson Pass, Fourth Of July Pass, Kettle
Falls, Nespelem, Twisp, Inchelium, Newport, Omak, Lookout Pass,
Pangborn Airport, Metaline, Wallace, Davenport, Metaline Falls,
Cashmere, Peck, Stevens Pass, Springdale-Hunters Road, Pomeroy,
Winchester, Colville, Number 2 Canyon, Lewiston, Cheney, Plain,
Airway Heights, Northport, Fairfield, Downtown Spokane, Stehekin,
Bridgeport, Mullan, Flowery Trail Road, Craigmont, Entiat,
Lewiston Grade, Rockford, Fruitland, Wenatchee, Leavenworth,
Alpowa Summit, Republic, Number 1 Canyon, Nezperce, Osburn,
Lapwai, Ione, and Orin-Rice Road
1145 AM PST Mon Dec 29 2025
...AIR STAGNATION ADVISORY IN EFFECT UNTIL NOON PST THURSDAY...
* WHAT...Stagnant conditions will have potential to trap pollutants
near the ground with deteriorated air quality.
* WHERE...Portions of North and North Central Idaho and North
Central, Northeast, and Southeast Washington.
* WHEN...Until noon PST Thursday.
* IMPACTS...Periods of air stagnation can lead to the buildup of
pollutants near the surface.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Buildup of fine pollution particles can be harmful to those
sensitive to air pollution including people with lung and heart
problems, people with diabetes, children and the elderly.
&&
$$
JW
URGENT - WEATHER MESSAGE
National Weather Service Missoula MT
1123 AM PST Mon Dec 29 2025
IDZ005>008-012000-
/O.NEW.KMSO.AS.Y.0002.251229T2000Z-260101T2000Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region-
1123 AM PST Mon Dec 29 2025
...AIR STAGNATION ADVISORY IN EFFECT UNTIL NOON PST THURSDAY...
* WHAT...Stagnation conditions will trap pollutants, leading to
deteriorating air quality.
* WHERE...Lower Hells Canyon/Salmon River Region,
Orofino/Grangeville Region, Southern Clearwater Mountains, and
Northern Clearwater Mountains.
* WHEN...Until noon PST Thursday.
* IMPACTS...Periods of air stagnation can lead to the build up of
pollutants near the surface.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with respiratory illness should follow their physicians
advice for dealing with high levels of air pollution during periods
of stagnant air.
According to state air quality agencies, prolonged period of
stagnant air can hold pollutants close to the ground where people
live and breathe. Check with your local burn agency for any current
restrictions in your area.
&&
$$
