Hazard Report Provided By forecast.weather.gov

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
237 AM MDT Thu Apr 16 2026

WYZ001-002-012-170015-
/O.CON.KRIW.WS.W.0004.000000T0000Z-260417T1200Z/
Yellowstone National Park-Absaroka Mountains-Teton and Gros
Ventre Mountains-
Including the cities of Lake, Mammoth, and Old Faithful
237 AM MDT Thu Apr 16 2026

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 9 and
  18 inches, with the highest elevations could see up to 20 inches.
  Winds gusting between 30 and 50 mph.

* WHERE...Absaroka Mountains, Teton and Gros Ventre Mountains, and
  Yellowstone National Park.

* WHEN...Until 6 AM MDT Friday.

* IMPACTS...Travel could be very difficult, especially across Teton
  Pass and Togwotee Pass. Strong winds will cause limited visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .

For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .

&&

$$

Hazardous Weather Outlook
National Weather Service Riverton WY
253 AM MDT Thu Apr 16 2026

WYZ001>020-022>030-171300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
253 AM MDT Thu Apr 16 2026

...Winter Storm Warning in effect for the northwestern mountains
through tonight...

...Winter Weather Advisories in effect for portions of central
Wyoming from tonight through Friday...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight.

Snow moving into the west, spreading East of the Divide and into
southern Wyoming later today and tonight. Gusty wind will
accompany the snow with snow squalls possible in central and
southern Wyoming. Please see forecasts and Winter Weather Products
for details.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday...Much colder with snow showers continuing, ending in the
evening. A hard freeze is likely Friday night.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.


$$

Hazard Report Provided By forecast.weather.gov