Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
328 AM MDT Fri Aug 29 2025
WYZ001>020-022>030-301330-
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-
328 AM MDT Fri Aug 29 2025
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
Isolated to widely scattered showers and thunderstorms across
southern Wyoming and along and east of the Divide. Stronger showers
or thunderstorms could be capable of gusty 40 mph outflows across
southern Wyoming. Brief periods of heavy downpours are possible,
especially across Johnson County.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday... Isolated to scattered thunderstorm chances mainly along
and east of the Divide with lightning being the primary hazard.
Tuesday and Wednesday... Isolated afternoon and early evening
thunderstorm chances.
.SPOTTER INFORMATION STATEMENT...
Spotters are requested to submit rainfall totals online.
$$
Hazardous Weather Outlook
National Weather Service Cheyenne WY
313 PM MDT Fri Aug 29 2025
NEZ002-003-019>021-054-055-095-096-WYZ101>119-302115-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
313 PM MDT Fri Aug 29 2025
This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.
.DAY ONE...THIS AFTERNOON AND TONIGHT
- Scattered precipitation chances continue for Friday and
Saturday, though drier conditions are expected to return Sunday
onwards.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
- Warming trend starts Sunday, with fire weather concerns slowly
creeping up to start the work week.
.Spotter information statement...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1058 AM MDT Fri Aug 29 2025
COZ030>051-301700-
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-
1058 AM MDT Fri Aug 29 2025
This hazardous weather outlook is for northeast and north central
Colorado.
.DAY ONE...Today and Tonight
Scattered showers and thunderstorms will develop over the
mountains, and then spread east across the I-25 Corridor and
adjacent plains during the afternoon and evening. A few of the
storms will produce locally heavy rain up to an inch and a half
in 30 minutes. An isolated storm may approach severe levels with
hail and strong winds. Tonight, an organized area of storms may
form over the northeast corner of Colorado which could lead to
flooding.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
The weather pattern will remain active through Saturday with
scattered showers and thunderstorms. Drier conditions will likely
arrive for Sunday into early next week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today or tonight. However,
any reports of heavy rain or flooding will be appreciated.
$$
Hazardous Weather Outlook
National Weather Service Rapid City SD
1032 AM MDT Fri Aug 29 2025
SDZ001-002-012>014-024>032-041>043-072>076-078-WYZ054>060-301300-
Harding-Northern Perkins-Butte-Northern Meade Co Plains-Ziebach-
Northern Black Hills-Northern Foothills-Rapid City-
Southern Foothills-Central Black Hills-Southern Black Hills-
Custer Co Plains-Pennington Co Plains-Haakon-Western Fall River-
Northern Oglala Lakota-Northern Jackson-
Sturgis/Piedmont Foothills-Southern Meade Co Plains-
Hermosa Foothills-Eastern Fall River-Southern Oglala Lakota-
Southern Perkins-Northern Campbell-Southern Campbell-
Western Crook-Wyoming Black Hills-Weston County Plains-Newcastle-
Northeastern Crook-
1032 AM MDT Fri Aug 29 2025
This Hazardous Weather Outlook is for portions of western South
Dakota and northeastern Wyoming.
.DAY ONE...Today and Tonight
Showers and thunderstorms will be possible today. Severe weather
is not expected.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
Showers and thunderstorms will be possible through Saturday.
Severe storms are not expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today.
&&
Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity
$$
Hazardous Weather Outlook
National Weather Service Grand Junction CO
333 AM MDT Fri Aug 29 2025
COZ001>014-017>023-UTZ022>025-027>029-300945-
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-
333 AM MDT Fri Aug 29 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.
Thunderstorms and rain showers are expected again today. Storms
could produce small hail and gusty winds. Localized flash flooding
is possible in saturated areas affected by recent rainfall, including
burn scars, slot canyons, arroyos, and dry washes. Showers and
storms will quickly taper this evening and dry conditions return
overnight.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
A drying trend begins Saturday with flash flooding not likely.
Showers remain in the forecast on the terrain. Temperatures begin to
warm back up to climatological normals Sunday and remain there into
next week. Warmer and dry conditions continue early next week, with
some additional precipitation possible mid week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time, but any rainfall
measurements and/or reports of flash flooding would be welcome.
$$
