Alert archive / Wyoming / Flash Flood Warnings in 2014
Flash Flood Warning 13, NWS Riverton, WY
NWS Riverton, WY issued this flash flood warning at Aug 7, 2014, 4:50 PM MDT for Lincoln County, Wyoming. It was in force for 100 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2014, 4:50 PM MDT (22:50 UTC)
- Expired
- Aug 7, 2014, 6:30 PM MDT
- In force
- 100 min
- Issued by
- NWS Riverton, WY
- Area
- Storm-based polygon
- Flood severity
- None
County Lincoln County, WY
The radar
The Salt Lake City radar (KMTX), 178 km from the middle of the area, began a volume at 22:51 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
Salt Lake City I, UT (KSLC), launched 12:00Z, 10.8 hours before the alert went out and 168 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
- 15 J/kg
- Mixed-layer CIN
- -350 J/kg
- Mixed-layer LCL
- 1822 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
800 WGUS55 KRIW 072250 FFWRIW WYC023-080030- /O.NEW.KRIW.FF.W.0013.140807T2250Z-140808T0030Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE RIVERTON WY 450 PM MDT THU AUG 7 2014 THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL LINCOLN COUNTY IN WEST CENTRAL WYOMING... * UNTIL 630 PM MDT * AT 443 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH HEAVY RAINFALL AND ONE HALF HAIL ACROSS THE WARNED AREA. RADAR ESTIMATED THAT BETWEEN ONE AND TWO INCHES OF RAINFALL HAVE ALREADY FALLEN IN PORTIONS OF THE WARNED AREA. ADDITIONAL SLOW MOVING THUNDERSTORMS WITH HEAVY RAINFALL ARE EXPECTED TO TRACK OVER THESE SAME AREAS THROUGH 630 PM. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... KEMMERER...DIAMONDVILLE...ELKOL...OPAL.. FLOODING ON SOME RESIDENTIAL STREETS HAVE ALREADY BEEN REPORTED. IN ADDITION...ONE HALF INCH HAIL COVERING THE GROUND HAS BEEN REPORTED WITH THESE STORMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. && REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4195 11031 4168 11024 4163 11065 4184 11065 $$ LIPSON
2 follow-up statements
382 WGUS75 KRIW 072318 FFSRIW FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 518 PM MDT THU AUG 7 2014 WYC023-080030- /O.CON.KRIW.FF.W.0013.000000T0000Z-140808T0030Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LINCOLN WY- 518 PM MDT THU AUG 7 2014 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL LINCOLN COUNTY UNTIL 630 PM MDT... AT 515 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH HEAVY RAINFALL BEGINNING TO EXIT SLOWLY TO THE NORTHEAST OF THE WARNED AREA AND WEAKENING AS IT DOES. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL LIKELY CAUSE THE WILLOW CREEK TO RISE AS IT EMPTIES INTO THE HAMS FORM WHICH ALSO RECEIVED EXCESSIVE RAINFALL FROM THESE STORMS. RUN OFF FROM THESE STREAMS WILL POTENTIALLY AFFECT THE EAST PORTION OF KEMMERER AS WELL AS DIAMONDVILLE. THERE HAS ALREADY BEEN SOME FLOODING REPORTED IN THE TOWN OF KEMMERER FROM THESE STORMS. LOCATIONS THAT WILL LIKELY EXPERIENCE FLOODING INCLUDE...KEMMERER...DIAMONDVILLE...ELKOL AND OPAL. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN RIVERTON. && REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4195 11031 4168 11024 4163 11065 4184 11065 $$ LIPSON
195 WGUS75 KRIW 080030 FFSRIW FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 630 PM MDT THU AUG 7 2014 WYC023-080045- /O.EXP.KRIW.FF.W.0013.000000T0000Z-140808T0030Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LINCOLN WY- 630 PM MDT THU AUG 7 2014 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTH CENTRAL LINCOLN COUNTY HAS BEEN ALLOWED TO EXPIRE... RUNOFF FROM HEAVY RAIN HAS ENDED OR WILL BE ENDING OVER THE WARNED AREA. A FEW MORE SHOWERS MAY OCCUR THIS EVENING. 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 4195 11031 4168 11024 4163 11065 4184 11065 $$ AR
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:37 PM MDT | Special Weather Statement | RIW | Natrona | 53 min |
| Aug 7, 12:39 PM MDT | Special Weather Statement | RIW | Sweetwater | 51 min |
| Aug 7, 1:36 PM MDT | Special Weather Statement | RIW | Natrona | 39 min |
| Aug 7, 1:41 PM MDT | Special Weather Statement | RIW | Johnson | 49 min |
| Aug 7, 4:07 PM MDT | Special Weather Statement | RIW | Sweetwater | 38 min |
| Aug 7, 5:08 PM MDT | Special Weather Statement | RIW | Lincoln | 37 min |
| Aug 7, 5:18 PM MDT | Special Weather Statement | RIW | 42 min | |
| Aug 7, 5:40 PM MDT | Special Weather Statement | RIW | Fremont | 35 min |
| Aug 7, 5:45 PM MDT | Special Weather Statement | RIW | Fremont | 30 min |
| Aug 7, 5:49 PM MDT | Special Weather Statement | RIW | Natrona | 26 min |
Nearby
Flash Flood Warnings in Wyoming, 2014Every flash flood warning in 2014
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.