Alert archive / Utah / Flash Flood Warnings in 2012
Flash Flood Warning 57, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Aug 23, 2012, 11:59 AM MDT for Sevier County, Wayne County, Utah. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 23, 2012, 11:59 AM MDT (17:59 UTC)
- Expired
- Aug 23, 2012, 3:00 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
Counties Sevier County, UT, Wayne County, UT
The radar
The Cedar City radar (KICX), 162 km from the middle of the area, began a volume at 18:01 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 23, 12:54 PM MDT | FLASH FLOOD | Se Torrey, UT | FLASH FLOODING IN CAPITOL REEF NP INCLUDING SULPHUR CREEK. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Grand Junction, CO (KGJT), launched 12:00Z, 6.0 hours before the alert went out and 256 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
- 191 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 1007 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
919
WGUS55 KSLC 231759
FFWSLC
UTC041-055-232100-
/O.NEW.KSLC.FF.W.0057.120823T1759Z-120823T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1159 AM MDT THU AUG 23 2012
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN SEVIER COUNTY IN UTAH
WESTERN WAYNE COUNTY IN UTAH
* UNTIL 300 PM MDT
* AT 1151 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED THUNDERSTORMS CAPABLE OF PRODUCING VERY HEAVY RAIN OVER
CAPITOL REEF NATIONAL PARK.
* THIS WARNING INCLUDES THE CATHEDRAL VALLEY...SULPHUR
CREEK...CAPITOL GORGE...GRAND WASH...THE SCENIC DRIVE...CAPITOL
GORGE.
SPOTTER REPORTS OF HEAVY RAINFALL...IN EXCESS OF 0.60 INCHES IN A
SHORT PERIOD HAVE BEEN RECEIVED. SPOTTERS HAVE ALSO REPORTED WATER
CROSSING THE SCENIC ROAD SOUTH OF FRUITA. HEAVY RUNOFF AND FLASH
FLOODING CAN BE EXPECTED OVER THE NEXT SEVERAL HOURS ACROSS THE
WARNED AREA.
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.
&&
LAT...LON 3820 11110 3818 11123 3831 11147 3841 11147
3855 11139 3846 11115
$$
KRUSE2 follow-up statements
092
WGUS75 KSLC 231908
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
108 PM MDT THU AUG 23 2012
UTC041-055-232100-
/O.CON.KSLC.FF.W.0057.000000T0000Z-120823T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-SEVIER UT-
108 PM MDT THU AUG 23 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 PM MDT FOR
SOUTHEASTERN SEVIER AND WESTERN WAYNE COUNTIES...
AT 100 PM MDT...FLASH FLOODING WAS REPORTED IN THE SULPHER CREEK
DRAINAGE OF CAPITOL REEF NATIONAL PARK. SULPHER CREEK IS LOCATED TO
THE WEST OF THE PARK AND FLOWS DIRECTLY EAST PAST THE VISITORS
CENTER TERMINATING INTO THE FREMONT RIVER.
IF YOU PLAN ON TRAVELING THROUGH CAPITOL REEF NATIONAL PARK...PLEASE
USE CAUTION...AS IT IS ANTICIPATED FLASH FLOODING MAY OCCUR IN MANY
OTHER LOCATIONS IN THE PARK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3820 11110 3818 11123 3831 11147 3841 11147
3855 11139 3846 11115
$$
MCINERNEY702
WGUS75 KSLC 232055
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
255 PM MDT THU AUG 23 2012
UTC041-055-232103-
/O.EXP.KSLC.FF.W.0057.000000T0000Z-120823T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE UT-SEVIER UT-
255 PM MDT THU AUG 23 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 300 PM MDT FOR SOUTHEASTERN
SEVIER AND WESTERN WAYNE COUNTIES...
FLASH FLOODING WAS REPORTED IN THE SULPHER CREEK DRAINAGE OF CAPITOL
REEF NATIONAL PARK. IT IS ANTICIPATED THAT OTHER DRAINAGES IN THE
NORTHERN END OF THE PARK WILL CONTINUE TO FLOW AT ELEVATED LEVELS
THROUGHOUT THE EVENING AND NIGHTTIME HOURS.
PLEASE BE VIGILANT IF YOU ARE TRAVELING THROUGH THESE AREAS THIS
EVENING.
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.
LAT...LON 3820 11110 3818 11123 3831 11147 3841 11147
3855 11139 3846 11115
$$
MCINERNEYThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 12:45 PM MDT | Flash Flood Warning | SLC | Garfield, Wayne | 3 hr |
| Aug 23, 2:52 PM MDT | Flash Flood Warning | SLC | Kane, San Juan | 6 hr |
Nearby
Flash Flood Warnings in Utah, 2012Every flash flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.