Flood Watch
Flood Watch
National Weather Service Riverton WY
148 AM MDT Wed Jul 22 2026
WYZ001>020-022>030-230000-
/O.CON.KRIW.FA.A.0004.000000T0000Z-260723T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-
Including the cities of Jackson, Shoshoni, Lovell, Cokeville,
Thermopolis, Big Piney, Alpine, Thayne, Worland, Cody, Afton,
Pinedale, Wamsutter, Buffalo, Kemmerer, Old Faithful, Mammoth, Green
River, Meeteetse, Star Valley Ranch, Farson, Riverton, Clark,
Greybull, Ten Sleep, Casper, Shell, Dubois, Jeffrey City, Rock
Springs, Lander, Powell, Basin, Kaycee, La Barge, and Lake
148 AM MDT Wed Jul 22 2026
...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of central, north central, northwest, south
central, southwest, and west central Wyoming, including the
following areas, in central Wyoming, Casper Mountain, Green
Mountains and Rattlesnake Range, Lander Foothills, Natrona County
Lower Elevations, Owl Creek and Bridger Mountains, Southwest
Bighorn Basin, Upper Wind River Basin, Wind River Basin, Wind River
Mountains East and Wind River Mountains West. In north central
Wyoming, Bighorn Mountains Southeast, Bighorn Mountains West,
Northeast Johnson County, Southeast Bighorn Basin and Southeast
Johnson County. In northwest Wyoming, Absaroka Mountains, Cody
Foothills, Jackson Hole, North Bighorn Basin, Teton and Gros Ventre
Mountains and Yellowstone National Park. In south central Wyoming,
East Sweetwater County, Flaming Gorge and Rock Springs and Green
River. In southwest Wyoming, South Lincoln County. In west central
Wyoming, Salt River and Wyoming Ranges, Star Valley, Upper Green
River Basin and Upper Green River Basin Foothills.
* WHEN...Until late Wednesday night. The most likely period of
possible flooding is this afternoon through this evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- Slow moving showers and thunderstorms and abnormally high
moisture in the air can bring locally heavy rainfall that could
lead to flooding.
- 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.
&&
$$
Hattings
Flood Watch
National Weather Service Pocatello ID
114 AM MDT Wed Jul 22 2026
IDZ058>066-230300-
/O.CON.KPIH.FA.A.0001.260722T2000Z-260723T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marsh and Arbon Highlands-Franklin/Eastern Oneida Region-Bear
River Range-Bear Lake Valley-Blackfoot Mountains-Caribou Range-
Big Hole Mountains-Teton Valley-Centennial Mountains - Island
Park-
Including the cities of McCammon, Driggs, Henry, Island Park,
Soda Springs, Malad, Georgetown, St. Charles, Grace, Swan Valley,
Inkom, Kilgore, Victor, Thatcher, Tetonia, Preston, Ashton, Downey,
Bone, Montpelier, Wayan, Emigration Summit, and Lava Hot Springs
114 AM MDT Wed Jul 22 2026
...FLOOD WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH THIS
EVENING...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of eastern and southeast Idaho, including the
following areas, in eastern Idaho, Big Hole Mountains, Centennial
Mountains - Island Park and Teton Valley. In southeast Idaho, Bear
Lake Valley, Bear River Range, Blackfoot Mountains, Caribou Range,
Franklin/Eastern Oneida Region and Marsh and Arbon Highlands.
* WHEN...From this afternoon through this evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- An abnormally moist airmass will continue to overspread eastern
Idaho today with the potential for flash flooding across the
watch area.
- http://www.weather.gov/safety/flood
$$
Cropp
Flood Watch
National Weather Service Billings MT
1242 AM MDT Wed Jul 22 2026
MTZ056-064>067-138-139-169>171-WYZ198-199-230645-
/O.CON.KBYZ.FA.A.0003.260722T1900Z-260723T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Red Lodge Foothills-Paradise Valley-Livingston Area-Beartooth
Foothills-Absaroka/Beartooth Mountains-Southern Big Horn-
Southeastern Carbon-Bighorn Canyon-Northern Carbon-Pryor/Northern
Bighorn Mountains-Northeast Bighorn Mountains-Sheridan Foothills-
Including the locations of Fishtail, Lodge Grass, Red Lodge, McLeod,
Livingston, Bridger, Burgess Jct, Pryor, Cooke City, Fromberg,
Sheridan, Emigrant, Joliet, and Fort Smith
1242 AM MDT Wed Jul 22 2026
...FLOOD WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH LATE
TONIGHT...
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...Portions of south central Montana, including the following
areas, Absaroka/Beartooth Mountains, Beartooth Foothills, Bighorn
Canyon, Livingston Area, Northern Carbon, Paradise Valley,
Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern
Carbon and Southern Big Horn and north central Wyoming, including
the following areas, Northeast Bighorn Mountains and Sheridan
Foothills.
* WHEN...From this afternoon through late tonight.
* IMPACTS...Excessive runoff may result in flooding of rivers,
streams, and other low-lying and flood-prone locations. Recent burn
scars, including the Robertson Draw and East Side south of Red
Lodge, and the Elk along the eastern slopes of the Bighorn
Mountains, are at risk of experiencing flash flooding and debris
flows.
* ADDITIONAL DETAILS...
- Thunderstorms capable of producing very heavy rain are expected
this afternoon and evening. These storms may cause localized
flash flooding.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor the forecast and be prepared to take action should
Flash Flood Warnings be issued.
&&
$$
Tesar
Flood Watch
National Weather Service Great Falls MT
1041 PM MDT Tue Jul 21 2026
MTZ327-329-330-222200-
/O.CON.KTFX.FA.A.0005.260722T1800Z-260723T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Northwest Beaverhead County-Ruby Mountains and Southern
Beaverhead Mountains-Gallatin and Madison County Mountains and
Centennial Mountains-
Including the cities of West Yellowstone, Targhee Pass, Wise River,
Chief Joseph Pass, Wisdom, Monida Pass, Raynolds Pass, Big Sky,
Dewey, and Big Hole Pass
1041 PM MDT Tue Jul 21 2026
...FLOOD WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...A portion of southwest Montana, including the following
areas, Gallatin and Madison County Mountains and Centennial
Mountains, Northwest Beaverhead County and Ruby Mountains and
Southern Beaverhead Mountains.
* WHEN...From Wednesday afternoon through Wednesday evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.
* ADDITIONAL DETAILS...
- Slow moving thunderstorms capable of producing heavy rain are
expected Wednesday afternoon and evening.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
Glinskas
