120
WWUS75 KRIW 152019
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
119 PM MST Mon Dec 15 2025

WYZ002-161415-
/O.NEW.KRIW.HW.W.0014.251216T0800Z-251217T0800Z/
Absaroka Mountains-
119 PM MST Mon Dec 15 2025

...HIGH WIND WARNING IN EFFECT FROM 1 AM TUESDAY TO 1 AM MST
WEDNESDAY...

* WHAT...West winds 25 to 40 mph with gusts up to 75 mph expected.
  Strongest winds will be on the eastern slopes, with isolated gusts
  around 80 mph.

* WHERE...Absaroka Mountains.

* WHEN...From 1 AM Tuesday to 1 AM MST Wednesday.

* IMPACTS...Strong winds could blow down trees and power lines.
  Travel will be difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain in the lower levels of your home during the windstorm, and
avoid windows. Watch for falling debris and tree limbs. Use caution
if you must drive.

&&

$$

WYZ003-161415-
/O.NEW.KRIW.HW.W.0014.251216T0800Z-251218T0600Z/
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
119 PM MST Mon Dec 15 2025

...HIGH WIND WARNING IN EFFECT FROM 1 AM TUESDAY TO 11 PM MST
WEDNESDAY...

* WHAT...West winds 25 to 40 mph with gusts up to 60 mph expected.

* WHERE...Cody Foothills.

* WHEN...From 1 AM Tuesday to 11 PM MST Wednesday.

* IMPACTS...Strong winds could blow down trees and power lines.
  Travel may be difficult, especially for high profile vehicles.

* ADDITIONAL DETAILS...Strongest winds are most likely from the area
  of Cody to Clark, where gusts up to around 65 mph are possible.
  Downsloping winds from the Absaroka Mountains may bring sudden
  increases in winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain in the lower levels of your home during the windstorm, and
avoid windows. Watch for falling debris and tree limbs. Use caution
if you must drive.

&&

$$

WYZ019-020-022-161415-
/O.NEW.KRIW.HW.A.0011.251217T0800Z-251218T0600Z/
Green Mountains and Rattlesnake Range-Natrona County Lower
Elevations-Casper Mountain-
Including the cities of Jeffrey City and Casper
119 PM MST Mon Dec 15 2025

...HIGH WIND WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY EVENING...

* WHAT...West to southwest winds 35 to 45 mph with gusts up to 70
  mph possible.

* WHERE...Casper Mountain, Green Mountains and Rattlesnake Range,
  and Natrona County Lower Elevations.

* WHEN...From late Tuesday night through Wednesday evening.

* IMPACTS...Strong winds could blow down trees and power lines.
  Travel may be difficult, especially for high profile vehicles.

$$

WYZ011-025>030-161415-
/O.NEW.KRIW.HW.A.0011.251217T1200Z-251218T0600Z/
Southeast Johnson County-Upper Green River Basin Foothills-Upper
Green River Basin-South Lincoln County-Rock Springs and Green
River-Flaming Gorge-East Sweetwater County-
Including the cities of Kemmerer, Wamsutter, Rock Springs,
Cokeville, Kaycee, Big Piney, Pinedale, La Barge, Farson, and
Green River
119 PM MST Mon Dec 15 2025

...HIGH WIND WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 60 mph possible.

* WHERE...Southeast Johnson County, East Sweetwater County, Flaming
  Gorge, Rock Springs and Green River, South Lincoln County, Upper
  Green River Basin, and Upper Green River Basin Foothills.

* WHEN...From late Tuesday night through Wednesday evening.

* IMPACTS...Strong winds could blow down trees and power lines.
  Travel may be difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates.

&&

$$

WYZ016-161415-
/O.NEW.KRIW.HW.A.0011.251217T1200Z-251218T0600Z/
Upper Wind River Basin-
Including the cities of Dubois
119 PM MST Mon Dec 15 2025

...HIGH WIND WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY EVENING...

* WHAT...West winds 35 to 45 mph with gusts up to 70 mph possible.

* WHERE...Upper Wind River Basin.

* WHEN...From late Tuesday night through Wednesday evening.

* IMPACTS...Strong winds could blow down trees and power lines.
  Travel may be difficult, especially for high profile vehicles.

* ADDITIONAL DETAILS...Snow is possible starting Wednesday morning,
  continuing into the evening. Accumulations around Dubois will be
  around half an inch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates.

&&

$$

For more information from the National Weather Service, visit
https://weather.gov/riw/ .

Wittmann