Alert archive / Utah / Flash Flood Warnings in 2011
Flash Flood Warning 32, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Aug 19, 2011, 5:22 PM MDT for Garfield 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 19, 2011, 5:22 PM MDT (23:22 UTC)
- Expired
- Aug 19, 2011, 8:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
Counties Garfield County, UT, Wayne County, UT
The radar
The Cedar City radar (KICX), 161 km from the middle of the area, began a volume at 23:25 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 19, 6:54 PM MDT | FLASH FLOOD | 6 Se Torrey, UT | FLASH FLOODING IN CAPITOL REEF NATIONAL PARK JUST SOUTH OF THE VISITORS CENTER. RADAR RAINFALL ESTIMATES INDICATED NEARLY AN INCH FELL IN ABOUT 3 HOURS TIME. |
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, 11.4 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2372 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
094
WGUS55 KSLC 192322
FFWSLC
UTC017-055-200215-
/O.NEW.KSLC.FF.W.0032.110819T2322Z-110820T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
522 PM MDT FRI AUG 19 2011
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL GARFIELD COUNTY IN UTAH
SOUTH CENTRAL WAYNE COUNTY IN UTAH
* UNTIL 815 PM MDT
* AT 518 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
HEAVY RAIN FROM A THUNDERSTORM CAUSING FLASH FLOODING IN CAPITOL
REEF NATIONAL PARK. THE MAJORITY OF THE PRECIPITATION HAS FALLEN TO
THE WEST OF THE PARK WITH FLOODING TO OCCUR OVER THE SCENIC DRIVE
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 11147 3833 11111 3834 11102 3824 11104
3816 11102 3807 11117 3803 11131
$$
MCINERNEY1 follow-up statement
754
WGUS75 KSLC 200054
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
654 PM MDT FRI AUG 19 2011
UTC017-055-200215-
/O.CON.KSLC.FF.W.0032.000000T0000Z-110820T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARFIELD UT-WAYNE UT-
654 PM MDT FRI AUG 19 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM MDT FOR
CAPITOL REEF NATIONAL PARK...
AT 638 PM MDT...FLASH FLOODING HAS BEEN REPORTED IN CAPITOL REEF
NATIONAL PARK IN SEVERAL DRAINAGES SOUTH OF OF THE VISITORS CENTER.
IT IS ANTICIPATED THAT THE FLOODING WILL MOVE THROUGH THE PARK
AND ATTENUATE INTO THE FREMONT RIVER NEAR CAINEVILLE AROUND 815 PM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3820 11147 3833 11111 3834 11102 3824 11104
3816 11102 3807 11117 3803 11131
$$
MCINERNEYThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 5:47 PM MDT | Special Weather Statement | SLC | Wayne | 28 min |
Nearby
Flash Flood Warnings in Utah, 2011Every flash flood warning in 2011
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.