Freeze Warning
URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
1247 PM MDT Tue Sep 23 2025
WYZ105-109>111-113-115-241600-
/O.UPG.KCYS.FZ.A.0001.250924T0800Z-250924T1600Z/
/O.NEW.KCYS.FZ.W.0001.250924T0800Z-250924T1600Z/
Shirley Basin-Central Carbon County-North Snowy Range Foothills-
Southwest Carbon County-Upper North Platte River Basin-Laramie
Valley-
Including the cities of Rawlins, Saratoga, Encampment, Laramie,
Bosler, Shirley Basin, Medicine Bow, Baggs, Arlington, and Elk
Mountain
1247 PM MDT Tue Sep 23 2025
...FREEZE WARNING IN EFFECT FROM 2 AM TO 10 AM MDT WEDNESDAY...
* WHAT...Sub-freezing temperatures as low as 30 possible with areas
of frost.
* WHERE...Central Carbon County, North Snowy Range Foothills,
Shirley Basin, Southwest Carbon County, Upper North Platte River
Basin, and Laramie Valley.
* WHEN...From 2 AM to 10 AM MDT Wednesday.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
Fuller
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
133 PM MDT Tue Sep 23 2025
WYZ001>020-022>030-242345-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
133 PM MDT Tue Sep 23 2025
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...This afternoon and tonight.
Lingering rain showers and low clouds along and east of a Rock
Springs to Casper line will slowly decrease in coverage through the
afternoon, with clear skies expected by 9 to 10 PM.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Wednesday...Areas of fog are expected along the I-80 Corridor east of
Rock Springs Wednesday morning, and may lead to reductions in
visibility and slick roadways.
Sunday and Monday... Isolated to scattered afternoon
thunderstorm chances across western and southern Wyoming.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
Hazardous Weather Outlook
National Weather Service Cheyenne WY
116 PM MDT Tue Sep 23 2025
NEZ002-003-019>021-054-055-095-096-WYZ101>119-241930-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
116 PM MDT Tue Sep 23 2025
This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.
.DAY ONE...THIS AFTERNOON AND TONIGHT
- A cold front and Pacific storm system will bring much cooler
temperatures and unsettled weather Tuesday. Mountain snowfall is
expected above 8500 feet.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
- A Freeze Warning is in effect for the high valleys west of the
Laramie Range Wednesday morning. Freezing temperatures and
frost possible.
- A ridge of high pressure aloft will lead to drier and warmer
weather for Thursday through the weekend.
.Spotter information statement...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1042 AM MDT Tue Sep 23 2025
COZ030>051-241645-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1042 AM MDT Tue Sep 23 2025
This hazardous weather outlook is for northeast and north central
Colorado.
.DAY ONE...Today and Tonight
Widespread rain will continue throughout the day with some areas
receiving over 2 inches of rainfall. Snow will impact travel above
9000 feet. Snowfall totals up to 10 inches are possible in the
Front Range mountains.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday
Dry and warmer conditions are expected through the rest of the
week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today or tonight.
$$
Hazardous Weather Outlook
National Weather Service Grand Junction CO
256 AM MDT Tue Sep 23 2025
COZ001>014-017>023-UTZ022>025-027>029-240900-
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-
256 AM MDT Tue Sep 23 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.
Thunderstorm development will be possible this afternoon with gust
winds...lightning and small hail the main threat. Accumulating
snowfall is also possible at the highest elevations of the northern
and central Colorado mountains.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
After a dry stretch thunderstorm development will move back into the
4 Corner region by late in the week and spread elsewhere by the
weekend.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
