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FGUS75 KRIW 191759
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WYC003-013-017-019-025-029-037-039-043-201500-

Hydrologic Outlook
National Weather Service Riverton WY
1159 AM MDT Sat Sep 19 2026

...Showers and Thunderstorms Could Produce Heavy Rainfall and
Localized Flooding through Sunday...

Periods of showers and thunderstorms are expected across the northern
half of Wyoming Saturday and Sunday as a wet weather system shifts
east across the state. This weather system is funneling abundant
tropical moisture into northern and eastern portions of the state
with it`s eastward progression. Given the high moisture content, many
thunderstorms could feature heavy rainfall and possibly lead to
localized flooding. Poor drainage areas, urban areas, and steep
terrain will be the most susceptible locations for this isolated
flooding.

Many locations could see an additional 0.5" to 1.25" of rain through
Sunday afternoon, with a majority of this rain falling quickly in
thunderstorms.

Remember, if you encounter a flooded roadway, turn around don`t down!

$$

Gerhardt