Alert archive / Wyoming / Flash Flood Warnings in 2003
Flash Flood Warning 13, NWS Riverton, WY
NWS Riverton, WY issued this flash flood warning at Jul 26, 2003, 10:37 PM MDT for Johnson County, Washakie County, Wyoming. It was in force for 113 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
- Jul 26, 2003, 10:37 PM MDT (04:37 UTC)
- Expired
- Jul 27, 2003, 12:30 AM MDT
- In force
- 113 min
- Issued by
- NWS Riverton, WY
- Area
- Counties, with a storm outline in the text
Counties Johnson County, WY, Washakie County, WY
The radar
The Riverton/Lander radar (KRIW), 134 km from the middle of the area, began a volume at 04:38 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 00:00Z, 4.6 hours before the alert went out and 129 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
- 1139 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 2601 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KRIW 270445 FFWRIW WYC019-043-270630- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE RIVERTON WY 1037 PM MDT SAT JUL 26 2003 THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A * FLASH FLOOD WARNING FOR... EASTERN WASHAKIE COUNTY IN NORTH CENTRAL WYOMING SOUTHWESTERN JOHNSON COUNTY IN NORTH CENTRAL WYOMING * UNTIL 1230 AM MDT * AT 1037 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN OVER EASTERN WASAHKIE COUNTY. DOPPLER RADAR RAINFALL ESTIMATES INDICATED 1 TO 2 INCHES OF RAIN ABOUT 10 MILES SOUTHEAST OF TEN SLEEP...ALONG SPRING CREEK. ALSO...AT 1030 PM...FLOODING WAS REPORTED ALONG OTTER CREEK...JUST EAST OF HIGHWAY 434. THE STORMS WERE MOVING EAST AT 15 TO 20 MPH AND WILL MOVE INTO SOUTHWEST JHONSON COUNTY. ADDITIONAL RAINFALL OF 1 TO 2 INCHES OVER SOUTHWEST JOHNSON COUNTY WILL PRODUCE FLASH FLOODING OF CREEKS AND STREAMS THROUGH 1230 AM. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY. 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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLASH FLOODS. IT IS DIFFIUCLT AT NIGHT TO TELL THE DEPTH OF WATER ON ROADWAYS. DO NOT DRIVE THROUGH AREAS WHERE WATER COVERS THE ROAD. REPORT FLASH FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4350 10736 4349 10678 4417 10679 4415 10732 $$ CUNNINGHAM
3 follow-up statements
000 WGUS75 KRIW 270512 FFSRIW WYC019-043-270630- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 1107 PM MDT SAT JUL 26 2003 ...A FLASH FLOOD WARNING CONTINUES FOR EASTERN WASHAKIE AND SOUTHWESTERN JOHNSON COUNTIES UNTIL 1230 AM MDT... AT 1102 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN OVER THE SOUTHWEST PART OF JOHNSON COUNTY...JUST WEST OF KAYCEE. ADDITIONAL RAINFALL OF 1 TO 2 INCHES WILL BE POSSIBLE ACROSS SOUTHWEST JOHNSON COUNTY...INCLUDING KAYCEE THROUGH 1230 AM. THIS WILL RESULT IN FLASH FLOODING ALONG THE MIDDLE FORK OF THE POWDER RIVER. ALSO...RAIN HAS ENDED IN EASTERN WASHAKIE COUNTY. HOWEVER...FLASH FLOODING IS STILL POSSIBLE...ESPECIALLY ALONG SPRING AND OTTER CREEKS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IT IS NEARLY IMPOSSIBLE AT NIGHT TO TELL THE DEPTH OF WATER ON ROADWAYS. NEVER DRIVE THROUGH WATER OF UNKNOWN DEPTH. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN RIVERTON. LAT...LON 4350 10736 4350 10654 4417 10652 4415 10732 $$ CUNNINGHAM
000 WGUS75 KRIW 270549 FFSRIW WYC019-043-270630- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 1147 PM MDT SAT JUL 26 2003 ...A FLASH FLOOD WARNING CONTINUES FOR EASTERN WASHAKIE AND SOUTHWESTERN JOHNSON COUNTIES UNTIL 1230 AM MDT... AT 1143 PM MDT...THE RAIN HAS ENDED ACROSS MOST OF THE WARNING AREA. HOWEVER...FLASH FLOODING WILL STILL BE POSSIBLE ALONG STREAMS AND CREEKS THROUGH 1230 AM. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IT IS NEARLY IMPOSSIBLE AT NIGHT TO TELL THE DEPTH OF WATER ON ROADWAYS. NEVER DRIVE THROUGH WATER OF UNKNOWN DEPTH. 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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN RIVERTON. LAT...LON 4350 10736 4350 10654 4417 10652 4415 10732 $$ CUNNINGHAM
000 WGUS75 KRIW 270621 FFSRIW WYC019-043-270645- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 1219 AM MDT SUN JUL 27 2003 ...THE FLASH FLOOD WARNING FOR EASTERN WASHAKIE AND SOUTHWESTERN JOHNSON COUNTIES WILL BE ALLOWED TO EXPIRE AT 1230 AM... AT 1219 AM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT HEAVY RAINFALL HAS ENDED ACROSS THE WARNED AREA. NO REPORTS OF ADDITIONAL FLOODING HAVE BEEN RECEIVED. THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE. $$ FRIEDERS
Nearby
Flash Flood Warnings in Wyoming, 2003Every flash flood warning in 2003
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.