Flash Flood Watch
Issued by NWS Riverton, WY

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904
WGUS65 KRIW 191754
FFARIW

Flood Watch
National Weather Service Riverton WY
1154 AM MDT Sat Sep 19 2026

WYZ001>003-007>011-201300-
/O.CON.KRIW.FA.A.0006.000000T0000Z-260921T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Yellowstone National Park-Absaroka Mountains-Cody Foothills-Owl
Creek and Bridger Mountains-Bighorn Mountains West-Bighorn
Mountains Southeast-Northeast Johnson County-Southeast Johnson
County-
Including the cities of Meeteetse, Mammoth, Old Faithful, Kaycee,
Lake, Buffalo, Clark, and Cody
1154 AM MDT Sat Sep 19 2026

...FLOOD WATCH REMAINS IN EFFECT THROUGH SUNDAY AFTERNOON...

* WHAT...Flash flooding caused by moderate to heavy rainfall is
  possible, especially in terrain and poor drainage areas.

* WHERE...Portions of central, north central, and northwest Wyoming,
  including the following areas, in central Wyoming, Owl Creek and
  Bridger Mountains. In north central Wyoming, Bighorn Mountains
  Southeast, Bighorn Mountains West, Northeast Johnson County and
  Southeast Johnson County. In northwest Wyoming, Absaroka Mountains,
  Cody Foothills and Yellowstone National Park.

* WHEN...Through Sunday afternoon.

* IMPACTS...Excessive rainfall 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 and around
  steep terrain.

* ADDITIONAL DETAILS...
  - A slow moving weather system will move across Wyoming today and
    Sunday and bring rounds of showers and thunderstorms to the
    region, especially northern Wyoming. Any shower or thunderstorm
    could produce moderate to heavy rainfall across the Watch Area.
  - 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.

&&

$$

Gerhardt