339
WGUS55 KRIW 162228
FFWRIW
WYC003-043-170130-
/O.NEW.KRIW.FF.W.0002.260716T2228Z-260717T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RIVERTON WY
428 PM MDT THU JUL 16 2026
THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL BIG HORN COUNTY IN CENTRAL WYOMING...
NORTHERN WASHAKIE COUNTY IN CENTRAL WYOMING...
* UNTIL 730 PM MDT.
* AT 428 PM MDT, DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. BETWEEN 1.5 AND 2.5 INCHES OF
RAIN HAVE FALLEN ON THE NORMALLY DRY WASHES AND GULCHES THAT FEED
INTO THE NOWOOD RIVER UPSTREAM OF MANDERSON. THE EXPECTED RAINFALL
RATE IS 1 TO 2 INCHES PER HOUR WITH CURRENT THUNDERSTORMS. FLASH
FLOODING IS ONGOING OR EXPECTED TO BEGIN SHORTLY.
HAZARD...FLASH FLOODING CAUSED BY THUNDERSTORMS.
SOURCE...RADAR INDICATED.
IMPACT...FLASH FLOODING OF SMALL CREEKS AND STREAMS, AS WELL AS
OTHER POOR DRAINAGE AND LOW-LYING AREAS.
* SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
MAINLY RURAL AREAS OF SOUTH CENTRAL BIG HORN AND NORTHERN WASHAKIE
COUNTIES ALONG THE NOWOOD RIVER UPSTREAM OF MANDERSON.
THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
BETONITE RIDGE DRAW, PAINT ROCK CREEK, SOUTH FORK BROKENBACK CREEK,
HIDDEN DOME DRAW, NOWOOD RIVER, SAND CREEK, ZEISMAN DOME DRAW, EAST
FORK MCDERMOTTS GULCH, BUFFALO CREEK, WEINTZ DRAW, BROKENBACK CREEK
AND BIG COTTONWOOD CREEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND, DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
BE AWARE OF YOUR SURROUNDINGS AND DO NOT DRIVE ON FLOODED ROADS.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW SPOTS AND NORMALLY DRY
WATER CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT
ATTEMPT TO CROSS FLOODED ROADS. FIND AN ALTERNATE ROUTE.
LAT...LON 4417 10783 4425 10792 4429 10792 4425 10774
4414 10750 4406 10744 4404 10757 4406 10774
4414 10780
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
VANDENBOOGART
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