Alert archive / Wyoming / Flash Flood Warnings in 2013
Flash Flood Warning 13, NWS Riverton, WY
NWS Riverton, WY issued this flash flood warning at Sep 12, 2013, 5:58 PM MDT for Lincoln County, Sublette County, Sweetwater County, Wyoming. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 12, 2013, 5:58 PM MDT (23:58 UTC)
- Expired
- Sep 12, 2013, 8:00 PM MDT
- In force
- 2 hr
- Issued by
- NWS Riverton, WY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lincoln County, WY, Sublette County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 159 km from the middle of the area, began a volume at 00:03 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 12.0 hours before the alert went out and 165 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 1094 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
143 WGUS55 KRIW 122358 FFWRIW WYC023-035-037-130200- /O.NEW.KRIW.FF.W.0013.130912T2358Z-130913T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE RIVERTON WY 558 PM MDT THU SEP 12 2013 THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL LINCOLN COUNTY IN WEST CENTRAL WYOMING... NORTHWESTERN SWEETWATER COUNTY IN SOUTH CENTRAL WYOMING... SOUTH CENTRAL SUBLETTE COUNTY IN WEST CENTRAL WYOMING... * UNTIL 800 PM MDT * AT 551 PM MDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH FLOODING ACROSS THE WARNED AREA. WYOMING HIGHWAY PATROL REPORTED A MUDSLIDE THAT HAD CLOSED HIGHWAY 189 AT MILE MARKER 79 OR NEAR NAMES HILL. AN ESTIMATED 1 TO 1.25 INCHES OF RAIN HAS FALLEN BETWEEN FONTENELLE RECREATION AREA AND LA BARGE SINCE 430 PM. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...CALPET... FONTENELLE RECREATION AREA...LA BARGE...NAMES HILL...U.S. HWY 189 MILE MARKER 90 AND VIOLA. PRECAUTIONARY/PREPAREDNESS ACTIONS... ADDITIONAL RAINFALL AMOUNTS OF ONE HALF TO ONE INCH ARE POSSIBLE FROM LA BARGE NORTH TO PINEY CREEK THROUGH 7 PM. EXCESSIVE RAINFALL MAY CAUSE MUD AND ROCK SLIDES IN AREAS OF STEEPLY SLOPED TERRAIN. && REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4244 10993 4206 10994 4205 11044 4246 11035 $$ MEUNIER
2 follow-up statements
913
WGUS75 KRIW 130051
FFSRIW
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
651 PM MDT THU SEP 12 2013
WYC037-130057-
/O.CAN.KRIW.FF.W.0013.000000T0000Z-130913T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SWEETWATER WY-
651 PM MDT THU SEP 12 2013
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN
SWEETWATER COUNTY IS CANCELLED...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED
AREA...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN
OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT
1-800-211-1448.
LAT...LON 4244 10999 4225 11008 4206 11009 4205 11044
4246 11035
$$
WYC023-035-130200-
/O.CON.KRIW.FF.W.0013.000000T0000Z-130913T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN WY-SUBLETTE WY-
651 PM MDT THU SEP 12 2013
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL SUBLETTE
AND EAST CENTRAL LINCOLN COUNTIES UNTIL 800 PM MDT...
AT 642 PM...RADAR SHOWED THAT THUNDERSTORMS AND THE HEAVIER RAINFALL
HAD MOVED OUT OF THE AREA. THESE STORMS DUMPED AN ESTIMATED 1 TO
1.25 INCHES OF RAIN ALONG HIGHWAY 189 BETWEEN THE FONTENELLE
RECREATION AREA TO LA BARGE AND NORTH TO MILE MARKER 90. THIS WILL
BE THE AREA MOST PRONE TO FLASH FLOODING AND MUDSLIDES EARLY THIS
EVENING.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...CALPET...
FONTENELLE RECREATION AREA...LA BARGE...NAMES HILL...U.S. HWY 189
MILE MARKER 90 AND VIOLA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WYOMING HIGHWAY PATROL REPORTED A MUDSLIDE ALONG HIGHWAY 189 NEAR
MILE MARKER 79 OR NEAR NAMES HILL THAT HAD CLOSED THE HIGHWAY.
FLOODING WAS ALSO REPORTED BETWEEN NAMES HILL AND LA BARGE.
A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR
OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND
IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO
CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT
1-800-211-1448.
LAT...LON 4244 10999 4225 11008 4206 11009 4205 11044
4246 11035
$$
MEUNIER984
WGUS75 KRIW 130201
FFSRIW
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
801 PM MDT THU SEP 12 2013
WYC023-035-130214-
/O.EXP.KRIW.FF.W.0013.000000T0000Z-130913T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN WY-SUBLETTE WY-
801 PM MDT THU SEP 12 2013
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTH CENTRAL
SUBLETTE AND EAST CENTRAL LINCOLN COUNTIES WILL BE ALLOWED TO EXPIRE
AT 800 PM MDT...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. HOWEVER...HIGHWAY 189 AT MILE
POST 78 REMAINED CLOSED AT 8 PM DUE TO A MUDSLIDE. IF FLOODING HAS
BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT
AGENCY. CHECK THE LATEST ROAD CONDITIONS AND CLOSURES AT
WYOROAD.INFO OR BY CALLING 5 1 1.
REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT
1-800-211-1448.
LAT...LON 4244 10999 4225 11008 4206 11009 4205 11044
4246 11035
$$
MEUNIERThe office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 12, 2:35 PM MDT | Special Weather Statement | RIW | Sweetwater | 40 min |
| Sep 12, 2:45 PM MDT | Special Weather Statement | RIW | Sweetwater | 45 min |
| Sep 12, 3:01 PM MDT | Special Weather Statement | RIW | Lincoln | 44 min |
| Sep 12, 3:25 PM MDT | Special Weather Statement | RIW | Sweetwater | 50 min |
| Sep 12, 3:27 PM MDT | Special Weather Statement | RIW | Sweetwater | 48 min |
| Sep 12, 3:29 PM MDT | Special Weather Statement | RIW | Sweetwater | 46 min |
| Sep 12, 3:54 PM MDT | Special Weather Statement | RIW | 51 min | |
| Sep 12, 3:57 PM MDT | Special Weather Statement | RIW | Lincoln | 48 min |
| Sep 12, 4:05 PM MDT | Special Weather Statement | RIW | Sweetwater | 40 min |
| Sep 12, 4:15 PM MDT | Special Weather Statement | RIW | Sweetwater | 45 min |
| Sep 12, 4:20 PM MDT | Special Weather Statement | RIW | 40 min | |
| Sep 12, 4:51 PM MDT | Severe Thunderstorm Warning | RIW | Sweetwater | 54 min |
| Sep 12, 5:03 PM MDT | Special Weather Statement | RIW | Sweetwater | 42 min |
| Sep 12, 5:28 PM MDT | Special Weather Statement | RIW | Lincoln | 47 min |
| Sep 12, 5:52 PM MDT | Special Weather Statement | RIW | 38 min | |
| Sep 12, 5:54 PM MDT | Special Weather Statement | RIW | 51 min |
Nearby
Flash Flood Warnings in Wyoming, 2013Every flash flood warning in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.