Alert archive / Utah / Flash Flood Warnings in 2008
Flash Flood Warning 21, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Aug 7, 2008, 4:25 PM MDT for Emery County, Wayne County, Utah. It was in force for 3 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
- Aug 7, 2008, 4:25 PM MDT (22:25 UTC)
- Expired
- Aug 7, 2008, 7:30 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
Counties Emery County, UT, Wayne County, UT
The radar
The Cedar City radar (KICX), 205 km from the middle of the area, began a volume at 22:28 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
Grand Junction, CO (KGJT), launched 12:00Z, 10.4 hours before the alert went out and 214 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
- 347 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 935 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KSLC 072226 FFWSLC UTC015-055-080130- /O.NEW.KSLC.FF.W.0021.080807T2225Z-080808T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 425 PM MDT THU AUG 7 2008 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL EMERY COUNTY IN UTAH... NORTH CENTRAL WAYNE COUNTY IN UTAH... * UNTIL 730 PM MDT * AT 418 PM MDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GOBLIN VALLEY THE WILD HORSE CREEK DRAINAGE IS EXPERIENCING FLASH FLOODING. THERE HAVE BEEN REPORTS OF THREE TO FOUR FEET OF WATER FLOWING ACROSS AREA ROADS. ROADS...CREEK CROSSINGS...AND NORMALLY DRY WASHES WILL BE IMPASSABLE THROUGH THE EARLY EVENING. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN. LAT...LON 3861 11096 3862 11069 3843 11071 3844 11095 TIME...MOT...LOC 2225Z 180DEG 0KT 3853 11073 $$ ES
1 follow-up statement
000 WGUS75 KSLC 080124 FFSSLC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 721 PM MDT THU AUG 7 2008 UTC015-055-080131- /O.EXP.KSLC.FF.W.0021.000000T0000Z-080808T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WAYNE UT-EMERY UT- 721 PM MDT THU AUG 7 2008 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 730 PM MDT FOR SOUTH CENTRAL EMERY AND NORTH CENTRAL WAYNE COUNTIES... RUNOFF FROM EARLIER PRECIPITATION HAS DIMINISHED AND LOCAL LAW ENFORCEMENT HAS REPORTED THAT ROADS HAVE REOPENED IN THE WILD HORSE CREEK DRAINAGE. THEREFORE... THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE. SOME CREEKS AND WASHES NEAR THE ROADS MAY STILL BE RUNNING HIGHER AND FASTER THAN USUAL. PART OF THIS WARNING AREA REMAINS IN A DRY WASH AND SMALL STREAM ADVISORY. MONITOR NOAA WEATHER RADIO OR LOCAL TELEVISION OR RADIO FOR THE LATEST WEATHER INFORMATION. LAT...LON 3861 11096 3862 11069 3843 11071 3844 11095 TIME...MOT...LOC 0121Z 180DEG 0KT 3853 11073 $$ ES
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 7:22 PM MDT | Flash Flood Warning | SLC | Washington | 4 hr |
| Aug 7, 3:08 AM MDT | Flash Flood Watch | SLC | 19 hr | |
| Aug 7, 2:22 PM MDT | Areal Flood Advisory | SLC | Emery, Sanpete, Sevier | 3 hr |
| Aug 7, 3:07 PM MDT | Areal Flood Advisory | SLC | Utah, Wasatch | 3 hr |
| Aug 7, 3:15 PM MDT | Areal Flood Advisory | SLC | Wayne | 3 hr |
| Aug 7, 3:59 PM MDT | Flash Flood Warning | SLC | Wayne | 3 hr |
Nearby
Flash Flood Warnings in Utah, 2008Every flash flood warning in 2008
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.