Flash Flood Watch

Please Note Report Date

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Note:  Be sure to pay close attention to the date and time of each warning.    
This document contains all warnings in the state so please read the
complete document.
 
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WGUS65 KBYZ 202352

FFABYZ



Flood Watch

National Weather Service Billings MT

552 PM MDT Sun Sep 20 2026



MTZ029.033-036-037-057-058-138-169-171-173-235-WYZ198-199-210100-

/O.EXP.KBYZ.FA.A.0004.000000T0000Z-260921T0000Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

Musselshell-Treasure-Northern Rosebud-Custer-Fallon-Powder River-

Carter-Northern Big Horn-Southern Rosebud-Southern Big Horn-

Bighorn Canyon-Pryor/Northern Bighorn Mountains-Northeastern

Yellowstone-Southwestern Yellowstone-Northeast Bighorn Mountains-

Sheridan Foothills-

Including the locations of Miles City, Baker, Roundup, Burgess Jct,

Hardin, Lame Deer, Colstrip, Sheridan, Pompeys Pillar, Forsyth,

Ekalaka, Pryor, Custer, Hysham, Crow Agency, Billings, Lodge Grass,

Fort Smith, and Broadus

552 PM MDT Sun Sep 20 2026



...FLOOD WATCH WILL EXPIRE AT 6 PM MDT THIS EVENING...



The Flood Watch will expire for all of Southeast Montana and Sheridan

County, WY at 6pm MDT.



Although scattered showers linger across the region, the primary

window of flooding concerns has ended.



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WMR



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WGUS65 KGGW 201837

FFAGGW



Flood Watch

National Weather Service Glasgow MT

1237 PM MDT Sun Sep 20 2026



MTZ021-022-025.027-201945-

/O.CAN.KGGW.FA.A.0003.000000T0000Z-260921T0000Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

Petroleum-Garfield-Dawson-Prairie-Wibaux-

Including Jordan, Richey, Glendive, Wibaux, Terry, and Winnett

1237 PM MDT Sun Sep 20 2026



...FLOOD WATCH IS CANCELLED...



The Flood Watch is cancelled for a portion of northeast Montana,

including the following areas, Dawson, Garfield, Petroleum, Prairie

and Wibaux.



There are a few lingering rain showers, but flooding is no longer

expected to pose an immediate threat. Please continue to heed

remaining road closures.



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