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Home Return to list Flash Flood Warning 0003 Issued by the Riverton Forecast Office
Action: New Issued At: 2026-09-19 19:26:03
331
WGUS55 KRIW 200025
FFWRIW
WYC013-200330-
/O.NEW.KRIW.FF.W.0003.260920T0025Z-260920T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Riverton WY
625 PM MDT Sat Sep 19 2026
The National Weather Service in Riverton has issued a
* Flash Flood Warning for...
Southern Fremont County in central Wyoming...
* Until 930 PM MDT.
* At 625 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. 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 Southern Fremont County.
This includes the following streams and drainages...
Little Popo Agie River, Grant Young Ditch, Monument Draw, North
Fork Ballenger Draw, Popo Agie River and Government Draw.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4281 10867 4283 10866 4288 10861 4286 10855
4284 10850 4280 10850 4279 10852 4277 10855
4277 10857 4278 10860
FLASH FLOOD...RADAR INDICATED
$$
TL
Action: Continued Issued At: 2026-09-19 20:29:36
167
WGUS75 KRIW 200129
FFSRIW
Flash Flood Statement
National Weather Service Riverton WY
729 PM MDT Sat Sep 19 2026
WYC013-200330-
/O.CON.KRIW.FF.W.0003.000000T0000Z-260920T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fremont WY-
729 PM MDT Sat Sep 19 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM MDT THIS
EVENING FOR SOUTHERN FREMONT COUNTY...
At 729 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 3 inches of rain have
fallen. Additional rainfall amounts of 1 to 2 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, highways,
streets and underpasses as well as other poor drainage and
low-lying areas.
Some locations that will experience flash flooding include...
Mainly rural areas of Southern Fremont County near Lyons Valley.
This includes the following streams and drainages...
Little Popo Agie River, Grant Young Ditch, Monument Draw, North
Fork Ballenger Draw, Popo Agie River and Government Draw.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4283 10866 4288 10861 4286 10855 4284 10850
4280 10850 4279 10852 4277 10855 4277 10857
4278 10860 4281 10867
FLASH FLOOD...RADAR INDICATED
$$
TL
Action: Expired Issued At: 2026-09-19 22:24:40
876
WGUS75 KRIW 200324
FFSRIW
Flash Flood Statement
National Weather Service Riverton WY
924 PM MDT Sat Sep 19 2026
WYC013-200334-
/O.EXP.KRIW.FF.W.0003.000000T0000Z-260920T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fremont WY-
924 PM MDT Sat Sep 19 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 930 PM MDT THIS EVENING FOR
SOUTHERN FREMONT COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat, but light rain will continue for the next several hours.
Please continue to heed remaining road closures.
&&
LAT...LON 4283 10866 4288 10861 4286 10855 4284 10850
4280 10850 4279 10852 4277 10855 4277 10857
4278 10860 4281 10867
$$
TL
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