Cold Weather Advisory
URGENT - WEATHER MESSAGE
National Weather Service Portland OR
1208 PM PST Wed Jan 21 2026
ORZ104-105-108-123-WAZ204>206-221800-
/O.NEW.KPQR.CW.Y.0001.260122T0800Z-260122T1800Z/
/O.EXA.KPQR.AS.Y.0002.000000T0000Z-260123T2000Z/
North Oregon Coast Range Lowlands-Central Oregon Coast Range
Lowlands-Lower Columbia River-Clackamas County Cascade Foothills-
Cowlitz County Lowlands-North Clark County Lowlands-Inner
Vancouver Metro-
Including the cities of Clark County Fairgrounds, Vernonia,
Spitzenberg, Brush Prairie, Salmon Creek, Burnt Woods, Vancouver,
Blodgett, Sifton, Swisshome, Kelso, Proebstel, Ridgefield,
Welches, Scappoose, Battle Ground, Cherryville, Blaine,
Klaskanine Summit, Svenson, Tiernan, Glenwood, Grand Ronde Indian
Reservation, Rainier, Shortys Corner, Vancouver Downtown, St.
Helens, Longview, Alston, Three Lynx, Hockinson, Mapleton,
Warren, Orchards, Kalama, Mayger, Hoskins, Brightwood, Jewell,
Evergreen, Rose Valley, La Center, Rhododendron, Deadwood,
Woodland, Zigzag, Grand Ronde, Castle Rock, Alma, Alsea,
Clatskanie, Necanicum, and Knappa
1208 PM PST Wed Jan 21 2026
...AIR STAGNATION ADVISORY IN EFFECT UNTIL NOON PST FRIDAY...
...COLD WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM
PST THURSDAY...
* WHAT...For the Air Stagnation Advisory, light winds and limited
air movement will lead to a period of stagnant air conditions. For
the Cold Weather Advisory, very cold wind chills as low as 20
expected.
* WHERE...North and Central Coast Range Valleys of Oregon, Lower
Columbia River and Cowlitz River Valleys, Clackamas County Cascade
Foothills, North Clark County Lowlands, and Inner Vancouver Metro.
* WHEN...For the Air Stagnation Advisory, until noon PST Friday. For
the Cold Weather Advisory, from midnight tonight to 10 AM PST
Thursday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems. Wind chill values and very cold
temperatures can lead to hypothermia with prolonged exposure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
People with respiratory illness should follow their physician`s
advice for dealing with high levels of air pollution during periods
of stagnant air, especially if an Air Quality Alert is in effect for
your area. To see if an Air Quality Alert is in effect for your
area, go to www.weather.gov/pqr and left-click your location on the
homepage map display. Alternatively, you could also type your
location into the search bar found on the top-left hand side of the
homepage. From there, you will see an Air Quality Alert listed at
the top if one is in effect for your location; you can click the
alert to read more details if applicable.
Those planning to venture outdoors should use common sense and dress
warmly, making sure exposed skin is properly covered to prevent
frostbite and/or hypothermia.
Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.
Keep pets indoors as much as possible.
Make sure outdoor animals have a warm, dry shelter, food, and
unfrozen water.
Make frequent checks on older family, friends, and neighbors. Ensure
portable heaters are used correctly. Do not use generators or grills
inside.
If you do not have heat in your home or lack shelter, you can call
211 for assistance locating appropriate shelter from the cold.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Portland OR
1208 PM PST Wed Jan 21 2026
ORZ106-107-110-113-WAZ208-221800-
/O.NEW.KPQR.CW.Y.0001.260122T0800Z-260122T1800Z/
North Oregon Coast Range-Central Oregon Coast Range-Portland West
Hills and Chehalem Mountain-Outer Southeast Portland Metro-South
Washington Cascade Foothills-
Including the cities of Mary`s Peak, Boring, Skyline Drive,
Wilson River Summit, Estacada, Valsetz, Sunset Summit, Toutle,
Horton, Sylvan Hill, Chehalem Mountain, Yacolt, Lake Merwin,
Amboy, and Sandy
1208 PM PST Wed Jan 21 2026
...COLD WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM
PST THURSDAY...
* WHAT...Very cold wind chills as low as 20 expected.
* WHERE...North and Central Coast Range Mountains of Oregon,
Portland Metro Hills, and South Washington Cascade Foothills.
* WHEN...From midnight tonight to 10 AM PST Thursday.
* IMPACTS...Wind chill values and very cold temperatures can lead to
hypothermia with prolonged exposure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Those planning to venture outdoors should use common sense and dress
warmly, making sure exposed skin is properly covered to prevent
frostbite and/or hypothermia.
Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.
Keep pets indoors as much as possible.
Make sure outdoor animals have a warm, dry shelter, food, and
unfrozen water.
Make frequent checks on older family, friends, and neighbors. Ensure
portable heaters are used correctly. Do not use generators or grills
inside.
If you do not have heat in your home or lack shelter, you can call
211 for assistance locating appropriate shelter from the cold.
&&
$$
For more information from the National Weather Service visit
www.weather.gov/portland
42
Freezing Fog Advisory
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1228 PM PST Wed Jan 21 2026
ORZ050-221800-
/O.NEW.KPDT.ZF.Y.0011.260121T2100Z-260122T1800Z/
Wallowa County-
Including the cities of Enterprise, Wallowa, and Joseph
1228 PM PST Wed Jan 21 2026
...FREEZING FOG ADVISORY IN EFFECT UNTIL 10 AM PST THURSDAY...
* WHAT...Visibility less than a quarter mile in freezing fog.
* WHERE...Wallowa County.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...Low visibility could make driving conditions hazardous.
Frost and freeze conditions could kill crops, other sensitive
vegetation and possibly damage unprotected outdoor plumbing.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.
&&
$$
PDT
Air Quality Alert
ORC017-221800-
Deschutes-
Including the cities of Bend, Redmond, Sunriver, Sisters, La Pine,
and Brothers
1131 AM PST Tue Jan 20 2026
...AIR QUALITY ADVISORY IN EFFECT UNTIL 10 AM PST THURSDAY...
Oregon Department of Environmental Quality has issued an Air Quality
Advisory until 10 AM PST Thursday.
For the Air Quality Advisory, stagnant air conditions will trap
smoke and other air pollutants near the ground where people breathe.
Check with your local health or air agency for current restrictions
on woodstove use. There are often exceptions for those who use wood
exclusively to heat their homes and those with limited income.
People can take the following precautions to protect their health:
* Follow local burn restrictions to prevent deteriorating air
quality.
* Avoid strenuous outdoor activity in smoky conditions.
* People with heart or lung problems and young children are
especially vulnerable. These people should stay indoors while
smoke levels are high.
* Use certified High Efficiency Particulate Air (HEPA) filters in
indoor heating ventilation, cooling, and air purification systems.
* Avoid using wood-burning stoves and other sources of indoor smoke
if possible.
For additional information...please visit the Web site at
http://www.oregon.gov/DEQ
$$
Air Stagnation Advisory
URGENT - WEATHER MESSAGE
National Weather Service Boise ID
123 PM MST Wed Jan 21 2026
IDZ011>014-016-028-033-ORZ061>064-221400-
/O.CON.KBOI.AS.Y.0001.000000T0000Z-260123T1200Z/
West Central Mountains-Lower Treasure Valley-Boise Mountains-
Upper Treasure Valley-Western Magic Valley-Camas Prairie-Upper
Weiser River-Harney County-Baker County-Malheur County-Oregon
Lower Treasure Valley-
Including the cities of Cambridge, Burns, New Princeton, Council,
Baker, Anderson Dam, Goodrich, Buchanan, Crane, Diamond,
Glendale, Prairie, Mesa, Ola, Malheur City, Caldwell, Big Creek,
Fairfield, Fruitvale, Boise, Ontario, Cascade, Indian Valley,
Twin Falls, Blaine, Dunnean, Bear, Warm Lake, Hill City, Cuprum,
Nyssa, Corral, Soldier, McCall, Venator, Nampa, Selby, and Pine
123 PM MST Wed Jan 21 2026 /1223 PM PST Wed Jan 21 2026/
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 AM
PST/ FRIDAY...
* WHAT...An extended 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 south central and southwest Idaho and
northeast and southeast Oregon.
* WHEN...Until 5 AM MST /4 AM PST/ Friday.
* 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.
&&
$$
LC
URGENT - WEATHER MESSAGE
National Weather Service Portland OR
1208 PM PST Wed Jan 21 2026
ORZ104-105-108-123-WAZ204>206-221800-
/O.NEW.KPQR.CW.Y.0001.260122T0800Z-260122T1800Z/
/O.EXA.KPQR.AS.Y.0002.000000T0000Z-260123T2000Z/
North Oregon Coast Range Lowlands-Central Oregon Coast Range
Lowlands-Lower Columbia River-Clackamas County Cascade Foothills-
Cowlitz County Lowlands-North Clark County Lowlands-Inner
Vancouver Metro-
Including the cities of Clark County Fairgrounds, Vernonia,
Spitzenberg, Brush Prairie, Salmon Creek, Burnt Woods, Vancouver,
Blodgett, Sifton, Swisshome, Kelso, Proebstel, Ridgefield,
Welches, Scappoose, Battle Ground, Cherryville, Blaine,
Klaskanine Summit, Svenson, Tiernan, Glenwood, Grand Ronde Indian
Reservation, Rainier, Shortys Corner, Vancouver Downtown, St.
Helens, Longview, Alston, Three Lynx, Hockinson, Mapleton,
Warren, Orchards, Kalama, Mayger, Hoskins, Brightwood, Jewell,
Evergreen, Rose Valley, La Center, Rhododendron, Deadwood,
Woodland, Zigzag, Grand Ronde, Castle Rock, Alma, Alsea,
Clatskanie, Necanicum, and Knappa
1208 PM PST Wed Jan 21 2026
...AIR STAGNATION ADVISORY IN EFFECT UNTIL NOON PST FRIDAY...
...COLD WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM
PST THURSDAY...
* WHAT...For the Air Stagnation Advisory, light winds and limited
air movement will lead to a period of stagnant air conditions. For
the Cold Weather Advisory, very cold wind chills as low as 20
expected.
* WHERE...North and Central Coast Range Valleys of Oregon, Lower
Columbia River and Cowlitz River Valleys, Clackamas County Cascade
Foothills, North Clark County Lowlands, and Inner Vancouver Metro.
* WHEN...For the Air Stagnation Advisory, until noon PST Friday. For
the Cold Weather Advisory, from midnight tonight to 10 AM PST
Thursday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems. Wind chill values and very cold
temperatures can lead to hypothermia with prolonged exposure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
People with respiratory illness should follow their physician`s
advice for dealing with high levels of air pollution during periods
of stagnant air, especially if an Air Quality Alert is in effect for
your area. To see if an Air Quality Alert is in effect for your
area, go to www.weather.gov/pqr and left-click your location on the
homepage map display. Alternatively, you could also type your
location into the search bar found on the top-left hand side of the
homepage. From there, you will see an Air Quality Alert listed at
the top if one is in effect for your location; you can click the
alert to read more details if applicable.
Those planning to venture outdoors should use common sense and dress
warmly, making sure exposed skin is properly covered to prevent
frostbite and/or hypothermia.
Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.
Keep pets indoors as much as possible.
Make sure outdoor animals have a warm, dry shelter, food, and
unfrozen water.
Make frequent checks on older family, friends, and neighbors. Ensure
portable heaters are used correctly. Do not use generators or grills
inside.
If you do not have heat in your home or lack shelter, you can call
211 for assistance locating appropriate shelter from the cold.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Medford OR
1154 AM PST Wed Jan 21 2026
ORZ029>031-221200-
/O.CON.KMFR.AS.Y.0001.000000T0000Z-260124T0000Z/
Klamath Basin-Northern and Eastern Klamath County and Western
Lake County-Central and Eastern Lake County-
Including the following locations...Adel, Bly, Chemult,
Gilchrist, Klamath Falls, Valley Falls, Beatty, Olene, Paisley,
Fort Rock, Sprague River, Altamont, New Pine Creek, Crescent,
Midland, and Lakeview
1154 AM PST Wed Jan 21 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST FRIDAY
WITHIN THE VALLEYS IN KLAMATH AND LAKE COUNTY...
* WHAT...Poor air quality will continue. This is due to an inversion
and stagnant air conditions near the surface that will continue to
trap pollutants Within the valleys in Klamath and Lake County.
* WHERE...The valleys of Klamath and Lake counties.
* WHEN...Until 4 PM PST Friday.
* 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.
&&
$$
BR-y
