Hazard Report Provided By forecast.weather.gov

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.


$$

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
135 PM MDT Thu Apr 16 2026

WYZ004-006-171200-
/O.NEW.KRIW.FZ.W.0001.260417T0300Z-260418T1500Z/
North Bighorn Basin-Southeast Bighorn Basin-
Including the cities of Shell, Worland, Basin, Ten Sleep, Lovell,
Powell, and Greybull
135 PM MDT Thu Apr 16 2026

...FREEZE WARNING IN EFFECT FROM 9 PM THIS EVENING TO 9 AM MDT
SATURDAY...

* WHAT...Sub-freezing overnight temperatures in the mid to upper 20s
  expected.

* WHERE...Southeast Bighorn Basin and North Bighorn Basin.

* WHEN...From 9 PM this evening to 9 AM MDT Saturday.

* IMPACTS...Frost and freeze conditions could kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing such as sprinkler systems.

* ADDITIONAL DETAILS...The coldest temperatures are expected to
  occur for a period of time before sunrise on Friday and Saturday
  mornings.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold and winterize
sprinkler systems.

&&

$$

Hazard Report Provided By forecast.weather.gov