Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
314 AM MST Thu Nov 20 2025
WYZ001>020-022>030-211415-
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-
314 AM MST Thu Nov 20 2025
...Special Weather Statement Due to Patchy Areas of Fog Has Been
Posted for Portions of Western, Southern, and Central WY to 10 AM
Thursday...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
Patchy areas of fog with visibilities less than one mile have begun
to develop across portions of western, southern, and central WY this
morning. Fog will likely linger through the morning gradually
dissipating by the late morning hours. Isolated showers will be
possible this morning mainly over western and southern WY.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday... Near seasonable temperatures with scattered showers
possible across portions of western and southern WY.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
Hazardous Weather Outlook
National Weather Service Grand Junction CO
155 AM MST Thu Nov 20 2025
COZ001>014-017>023-UTZ022>025-027>029-210900-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
155 AM MST Thu Nov 20 2025
This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.
.DAY ONE...Today and tonight.
Accumulating snowfall is likely, mainly for the San Juans today
shifting into the central and northern mountains tonight. Expect a
few isolated thundershowers generally south of I-70 through the
afternoon with lightning and gusty winds the primary threats.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Light accumulating snowfall is likely, mainly for central and
northern Colorado mountains Friday. The San Juan Mountains could see
another round of light snow showers Sunday into early next week with
little if any impacts.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected today or tonight, however
spotters are encouraged to report snowfall amounts to the
National Weather Service in Grand Junction.
$$
