Hazardous Weather Outlook for Mammoth, Wyoming
Hazardous Weather Outlook
National Weather Service Riverton WY
414 AM MDT Sun May 5 2024
WYZ001>020-022>030-061415-
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-
414 AM MDT Sun May 5 2024
...Winter Storm Warning and Winter Weather Advisories in effect for
western mountains Sunday evening through Tuesday evening...
...Winter Storm Watch for Bighorn Mountains Monday morning through
Tuesday morning...
...High Wind Warning for most of Sweetwater County and parts of
Fremont and Natrona Counties Sunday through Monday evening...
...High Wind Watch for parts of central Wyoming Monday through
Monday evening...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
Sunday...Strong to high wind possible for many locations,
particularly across south and central Wyoming. Snow returning to the
western mountains, especially at night.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Monday through Wednesday...Cool and unsettled with rain and
mountain snow, mainly in the northern and western half of the state.
Light snow possible in western valleys for Monday and Tuesday. Gusty
to strong westerly wind possible across much of the area.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
Winter Weather Advisory for Mammoth, Wyoming
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
403 AM MDT Sun May 5 2024
WYZ001-060115-
/O.UPG.KRIW.WS.A.0012.240506T0000Z-240508T1200Z/
/O.NEW.KRIW.WW.Y.0025.240506T0500Z-240508T0000Z/
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
403 AM MDT Sun May 5 2024
...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
6 PM MDT TUESDAY...
* WHAT...Snow expected. Total snow accumulations of 10 to 18
inches in southwest portions of the Park. Snowfall 1 to 5 inches
elsewhere. Winds could gust as high as 45 mph.
* WHERE...Yellowstone National Park.
* WHEN...From 11 PM this evening to 6 PM MDT Tuesday.
* IMPACTS...Travel could be very difficult, especially in the
backcountry.
* ADDITIONAL DETAILS...The highest winds occur Monday and Tuesday
afternoons. Heaviest snow occurs Monday morning into Monday
night.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts,
visit weather.gov/riw/winter.
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info.