URGENT - WEATHER MESSAGE
National Weather Service Boise ID
152 PM MST Mon Dec 15 2025

IDZ011-013-033-161200-
/O.CON.KBOI.AS.Y.0004.000000T0000Z-251216T1200Z/
West Central Mountains-Boise Mountains-Upper Weiser River-
Including the cities of Big Creek, Bear, Glendale, Warm Lake,
Pine, Indian Valley, Cambridge, Council, Mesa, Ola, Anderson Dam,
Fruitvale, Prairie, McCall, Goodrich, Cascade, and Cuprum
152 PM MST Mon Dec 15 2025

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY...

* 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...Boise Mountains, Upper Weiser River, and West Central
  Mountains.

* WHEN...Until 5 AM MST Tuesday.

* 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
152 PM MST Mon Dec 15 2025

IDZ012-014-016-028-ORZ064-161400-
/O.NEW.KBOI.HW.A.0002.251217T1200Z-251217T2100Z/
/O.CON.KBOI.AS.Y.0004.000000T0000Z-251216T1200Z/
Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley-
Camas Prairie-Oregon Lower Treasure Valley-
Including the cities of Hill City, Nyssa, Twin Falls, Fairfield,
Soldier, Ontario, Nampa, Selby, Boise, Caldwell, Corral, and
Blaine
152 PM MST Mon Dec 15 2025 /1252 PM PST Mon Dec 15 2025/

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 AM
PST/ TUESDAY...
...HIGH WIND WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY AFTERNOON...

* WHAT...For the Air Stagnation Advisory, 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. For the High Wind Watch, west winds 30 to 40 mph with
  gusts up to 60 mph possible.

* WHERE...Portions of south central and southwest Idaho and
  southeast Oregon.

* WHEN...For the Air Stagnation Advisory, until 5 AM MST /4 AM PST/
  Tuesday. For the High Wind Watch, from late Tuesday night through
  Wednesday afternoon.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems. Damaging winds could blow down trees and
  power lines. Widespread power outages are possible. Travel could
  be difficult, especially for high profile vehicles.

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.

Monitor the latest forecasts and warnings for updates.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Boise ID
152 PM MST Mon Dec 15 2025

ORZ061>063-161400-
/O.NEW.KBOI.HW.A.0002.251217T1200Z-251217T1800Z/
/O.CON.KBOI.AS.Y.0004.000000T0000Z-251216T1200Z/
Harney County-Baker County-Malheur County-
Including the cities of Dunnean, Venator, Burns, Crane, New
Princeton, Baker, Diamond, Buchanan, and Malheur City
1252 PM PST Mon Dec 15 2025 /152 PM MST Mon Dec 15 2025/

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ TUESDAY...
...HIGH WIND WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...

* WHAT...For the Air Stagnation Advisory, 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. For the High Wind Watch, west winds 25 to 35 mph with
  gusts up to 60 mph possible.

* WHERE...Baker County, Harney County, and Malheur County.

* WHEN...For the Air Stagnation Advisory, until 4 AM PST /5 AM MST/
  Tuesday. For the High Wind Watch, from late Tuesday night through
  Wednesday morning.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems. Damaging winds could blow down trees and
  power lines. Widespread power outages are possible. Travel could
  be difficult, especially for high profile vehicles.

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.

Monitor the latest forecasts and warnings for updates.

&&

$$