Headline:
Hydrologic Outlook issued September 18 at 10:20AM MDT by NWS Riverton WY
Event:
Hydrologic Outlook
Urgency:
Future
Effective:
September 18, 2026 - 9:20am
Expires:
September 19, 2026 - 11:00am
Description:
ESFRIW
A wet weather system will support periods of showers and
thunderstorms across Wyoming Friday, Saturday, and Sunday. This
weather system is funneling abundant tropical moisture into the
state. Given this anomalously high moisture, many thunderstorms will
feature heavy rainfall, possibly leading 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 rainfall totals anywhere between 0.75" to
1.75" 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!
Area Description:
Big Horn, WY; Fremont, WY; Hot Springs, WY; Johnson, WY; Lincoln, WY; Natrona, WY; Park, WY; Sublette, WY; Sweetwater, WY; Teton, WY; Washakie, WY
Forcast Office:
NWS Riverton WY
Sender:
w-nws.webmaster@noaa.gov