Flash Flood Watch
Flood Watch
National Weather Service Great Falls MT
1055 AM MDT Wed Aug 27 2025
MTZ324-325-328>330-280300-
/O.CON.KTFX.FF.A.0002.000000T0000Z-250828T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Missouri Headwaters-Madison River Valley-Beaverhead and Western
Madison below 6000ft-Ruby Mountains and Southern Beaverhead
Mountains-Gallatin and Madison County Mountains and Centennial
Mountains-
Including the following locations: Virginia City, Harrison,
Sheridan, Ennis, and Pony
1055 AM MDT Wed Aug 27 2025
...FLASH FLOOD WATCH FOR THE RECENT BURN SCARS ACROSS MADISON COUNTY
REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING...
* WHAT...Flash flooding and debris flows caused by excessive
rainfall are possible over the recent burn scars across Madison
County. Rainfall amounts of 1 to 2 inches are possible in less
than one hour from thunderstorms.
* WHERE...The recent burn scars across Madison County, with the
greatest impacts from debris flows possible on the Cloudrest,
Bivens Creek, and McAllister burn scars.
* WHEN...Until 9 PM MDT this evening.
* IMPACTS...Heavy rainfall over the Recent burn scars across Madison
County is expected up to and during the period of the watch.
Residents near the Recent burn scars across Madison County should
prepare for potential flooding impacts. Be sure to stay up to date
with information from local authorities. Heavy rainfall could
trigger flash flooding of low-lying areas, urbanized street
flooding, and debris flows in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over the burn scar, which may lead to flash flooding
and debris flows.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLAN NOW so you will know what to do in an emergency. Keep informed
by listening to local radio and television for statements and
possible warnings. Follow the advice of public safety officials.
&&
$$
Flood Advisory
Flood Advisory
National Weather Service Salt Lake City UT
1037 AM MDT Wed Aug 27 2025
UTC003-011-057-271900-
/O.EXT.KSLC.FA.Y.0007.000000T0000Z-250827T1900Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Box Elder UT-Davis UT-Weber UT-
1037 AM MDT Wed Aug 27 2025
...FLOOD ADVISORY NOW IN EFFECT UNTIL 1 PM MDT THIS AFTERNOON...
* WHAT...Urban and small stream flooding caused by excessive
rainfall continues.
* WHERE...A portion of northern Utah, including the following
counties, Box Elder, Davis and Weber.
* WHEN...Until 100 PM MDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Overflowing poor drainage areas. Ponding of
water in urban or other areas is occurring.
* ADDITIONAL DETAILS...
- At 1037 AM MDT, Doppler radar indicated heavy rain due to
thunderstorms. This will cause urban and small stream
flooding. Between 1 and 2 inches of rain have fallen.
- Additional rainfall amounts of 0.5 to 1 inch are expected
over the area. This additional rain will result in minor
flooding.
- Some locations that will experience flooding include...
Ogden, Brigham City, Roy, North Ogden, Hooper, Perry,
Willard, Marriott-Slaterville, Corinne, South Willard, West
Haven, Pleasant View, Farr West, Harrisville, Plain City,
Warren, West Weber, West Warren, Slaterville and Wilson.
- Standing water on I-15 between West Haven and Corinne is
likely.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4149 11237 4160 11205 4142 11193 4128 11184
4112 11217 4130 11227
$$
CRK
Flood Advisory
National Weather Service Salt Lake City UT
1018 AM MDT Wed Aug 27 2025
UTC011-057-271815-
/O.NEW.KSLC.FA.Y.0008.250827T1618Z-250827T1815Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Davis UT-Weber UT-
1018 AM MDT Wed Aug 27 2025
...FLOOD ADVISORY IN EFFECT UNTIL 1215 PM MDT THIS AFTERNOON...
* WHAT...Urban and small stream flooding caused by excessive
rainfall is expected.
* WHERE...A portion of northern Utah, including the following
counties, Davis and Weber.
* WHEN...Until 1215 PM MDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Ponding of water in urban or other areas is
occurring or is imminent.
* ADDITIONAL DETAILS...
- At 1018 AM MDT, Doppler radar indicated heavy rain due to
thunderstorms. This will cause urban and small stream
flooding. Between 0.25 and 1 inch of rain has fallen.
- Additional rainfall amounts of 0.25 to 0.75 inches are
expected over the area. This additional rain will result in
minor flooding.
- Some locations that will experience flooding include...
Ogden, Layton, Hill Air Force Base, Roy, Clearfield,
Syracuse, Clinton, South Ogden, Washington Terrace,
Riverdale, Hooper, South Weber, Uintah, Weber State
University, West Point and Sunset.
- Standing water is likely on I-15 from West Haven to Layton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4112 11217 4125 11191 4117 11188 4112 11185
4101 11211
$$
CRK
Flood Watch
Flood Watch
National Weather Service Pocatello ID
106 AM MDT Wed Aug 27 2025
IDZ051>075-280600-
/O.CON.KPIH.FA.A.0001.000000T0000Z-250828T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Shoshone/Lava Beds-Arco/Mud Lake Desert-Upper Snake River Plain-
Lower Snake River Plain-Eastern Magic Valley-Southern
Hills/Albion Mountains-Raft River Region-Marsh and Arbon
Highlands-Franklin/Eastern Oneida Region-Bear River Range-Bear
Lake Valley-Blackfoot Mountains-Caribou Range-Big Hole Mountains-
Teton Valley-Centennial Mountains - Island Park-Beaverhead -
Lemhi Highlands-Lost River Valley-Lost River Range-
Challis/Pahsimeroi Valleys-Frank Church Wilderness-
Sawtooth/Stanley Basin-Sun Valley Region-Big Lost
Highlands/Copper Basin-Wood River Foothills-
Including the cities of Soda Springs, Dubois, Burley, Idaho
Falls, Malta, Arco, Mackay, Clayton, Howe, Borah Peak, St.
Anthony, Craters of the Moon NM, Shoshone, McCammon, Montpelier,
Downey, St. Charles, Rupert, Georgetown, Heyburn, Thatcher,
Challis, Preston, Oakley, Swan Valley, Lava Hot Springs, Ashton,
Emigration Summit, Hailey, Victor, Almo, Rockland, Grace,
Rexburg, Tetonia, Spencer, Albion, Small, Ketchum, Island Park,
Carey, Edie School, Bellevue, Henry, Bone, Copper Basin, INL,
Blackfoot, Shelley, Inkom, Mud Lake, Fort Hall, Stanley,
Pocatello, Malad, Wayan, Driggs, Holbrook, Kilgore, Picabo,
American Falls, Chilly, Galena, Sun Valley, and Richfield
106 AM MDT Wed Aug 27 2025
...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING...
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of central, eastern, south central, and southeast
Idaho, including the following areas, in central Idaho, Big Lost
Highlands/Copper Basin, Challis/Pahsimeroi Valleys, Frank Church
Wilderness, Lost River Range, Lost River Valley, Sawtooth/Stanley
Basin, Sun Valley Region and Wood River Foothills. In eastern
Idaho, Beaverhead - Lemhi Highlands, Big Hole Mountains,
Centennial Mountains - Island Park and Teton Valley. In south
central Idaho, Eastern Magic Valley and Shoshone/Lava Beds. In
southeast Idaho, Arco/Mud Lake Desert, Bear Lake Valley, Bear
River Range, Blackfoot Mountains, Caribou Range, Franklin/Eastern
Oneida Region, Lower Snake River Plain, Marsh and Arbon Highlands,
Raft River Region, Southern Hills/Albion Mountains and Upper Snake
River Plain.
* WHEN...Through this evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
&&
$$
13
Air Quality Alert
IDC081-281345-
Air Quality Alert Message
Idaho Department of Environmental Quality
Relayed by National Weather Service Pocatello ID
744 AM MDT Wed Aug 27 2025
...THE AIR QUALITY ADVISORY FROM THE IDAHO DEPARTMENT OF
ENVIRONMENTAL QUALITY FOR TETON COUNTY HAS BEEN LIFTED...
Air quality has improved across the area. Therefore the Idaho
Department of Environmental Quality has cancelled the Air Quality
Advisory.
THIS STATEMENT IS ISSUED BY THE IDAHO DEPARTMENT OF ENVIRONMENTAL
QUALITY, AIR QUALITY GROUP. FOR MORE INFORMATION, CONTACT DEQ`s
Idaho Falls Regional Office at (208)528-2650.
$$
WYZ014-015-025-271900-
Wind River Mountains West-Wind River Mountains East-
Upper Green River Basin Foothills-
Including the city of Pinedale
115 PM MDT Tue Aug 26 2025
...AIR QUALITY ALERT IN EFFECT UNTIL 1 PM MDT WEDNESDAY...
The following message is transmitted on behalf of the Wyoming
Department of Environmental Quality, Air Quality Division, and the
Wyoming Department of Health.
* WHAT...Air Quality Alert for Wildfire Smoke.
* WHERE...Portions of west-central Wyoming, including the northern
parts of the Wind River Mountains and the western foothills from
Boulder and Pinedale northwest to Cora, Daniel, and Bondurant.
* WHEN...Until 1 PM Wednesday, August 27.
* IMPACTS...Smoke from the Dollar Lake Fire continues to be observed
across portions of west-central Wyoming. The smoke is will limit
visibilities at times, especially in the northern stretches of the
Wind River Mountains..
HEALTH INFORMATION...The Wyoming Department of Health recommends
that the elderly, young children, and individuals with respiratory
problems avoid excessive physical exertion and minimize outdoor
activities during this time. Wildfire smoke is made up of a variety
of pollutants, including particulate matter and ozone, which can
cause respiratory health effects. Although these people are most
susceptible to health impacts, the Department of Health also advises
that everyone should avoid prolonged exposure to poor air quality
conditions.
CURRENT CONDITIONS...The Wyoming Department of Environmental
Quality, Air Quality Division offers near real-time air quality data
for Wyoming`s monitoring stations and health effects information to
help the public interpret current conditions. Current air quality
conditions across the state of Wyoming can be found at
http://www.wyvisnet.com/.
$$
McDonald
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1025 AM MDT Wed Aug 27 2025
COZ030>051-281630-
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-
1025 AM MDT Wed Aug 27 2025
This hazardous weather outlook is for northeast and north central
Colorado.
.DAY ONE...Today and Tonight
Numerous 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. Some of the storms will produce
locally heavy rain, with 1-2 inches possible in a 30-45 minute
period. Burn scars will be most at risk for flash flooding,
although street and localized lowland flooding can be expected
with any stronger storms moving through the I-25 Corridor and
plains. One or two storms may also approach severe levels with
hail and strong winds.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday
The weather pattern will remain active with scattered to numerous
showers and thunderstorms through at least Thursday, with a
slow decrease of thunderstorm coverage and intensity thereafter.
The greatest risk of any storms producing flash flooding would be
decreasing after Thursday. 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.
$$
Hazardous Weather Outlook
National Weather Service Grand Junction CO
317 AM MDT Wed Aug 27 2025
COZ001>014-017>023-UTZ022>025-027>029-280930-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
317 AM MDT Wed Aug 27 2025
This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.
.DAY ONE...Today and tonight.
Widespread convection is expected again today. Storms will be
capable of producing heavy rainfall, small hail, gusty winds, and
frequent lightning. Flash flooding and debris flows are possible in
sensitive areas, such as slot canyons and recent burn scars. Storms
and flooding concerns will taper off quickly overnight.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Showers and thunderstorms will continue into the weekend. A slight
downturn in shower coverage is expected by Sunday. Flash flooding
remains a concern in sensitive areas. Temperatures will run below
normal.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is unlikely, but any reports of flash flooding
and/or unexpected meteorological conditions would be welcome along
with rainfall amounts.
$$
Hazardous Weather Outlook
National Weather Service Rapid City SD
311 AM MDT Wed Aug 27 2025
SDZ001-002-012>014-024>032-041>044-046-047-049-072>078-WYZ054>060-
281300-
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-Bennett-Mellette-Todd-
Tripp-Sturgis/Piedmont Foothills-Southern Meade Co Plains-
Hermosa Foothills-Eastern Fall River-Southern Oglala Lakota-
Southern Jackson-Southern Perkins-Northern Campbell-
Southern Campbell-Western Crook-Wyoming Black Hills-
Weston County Plains-Newcastle-Northeastern Crook-
311 AM MDT Wed Aug 27 2025 /411 AM CDT Wed Aug 27 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 this afternoon and
evening, mainly across southwestern South Dakota into the Black
Hills and northeastern Wyoming. Organized severe weather is not
expected.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday
Showers and thunderstorms will be possible Thursday 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
$$
Hazardous Weather Outlook
National Weather Service Cheyenne WY
307 AM MDT Wed Aug 27 2025
NEZ002-003-019>021-054-055-095-096-WYZ101>119-280915-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
307 AM MDT Wed Aug 27 2025
This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.
.DAY ONE...TODAY AND TONIGHT
Another cooler and wetter day today with multiple rounds of
showers and storms possible.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
Cool and wet pattern expected through Friday, with daily chances
for precipitation and highs 5 to 15 degrees below average.
.Spotter information statement...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Riverton WY
202 AM MDT Wed Aug 27 2025
WYZ001>020-022>030-281215-
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-
202 AM MDT Wed Aug 27 2025
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and Tonight.
Widely scattered rain showers and a few embedded thunderstorms with
lightning and brief heavy rainfall the main hazards.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Scattered rain showers and a couple embedded thunderstorms possible
Thursday becoming less active for Friday and Saturday. Warming and
dry trend Sunday onward into next week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
