Alert archive / Utah / Flash Flood Warnings in 2011
Flash Flood Warning 2, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jun 29, 2011, 2:22 PM MDT for Garfield 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
- Jun 29, 2011, 2:22 PM MDT (20:22 UTC)
- Expired
- Jun 29, 2011, 5:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
County Garfield County, UT
The radar
The Cedar City radar (KICX), 108 km from the middle of the area, began a volume at 20:23 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
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 8.4 hours before the alert went out and 273 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
- 2643 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
380
WGUS55 KSLC 292022
FFWSLC
UTC017-292315-
/O.NEW.KSLC.FF.W.0002.110629T2022Z-110629T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
222 PM MDT WED JUN 29 2011
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL GARFIELD COUNTY IN UTAH...
THIS INCLUDES ALVEY WASH NEAR THE CITY OF ESCALANTE...
* UNTIL 515 PM MDT
* AT 212 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A HEAVY THUNDERSTORM OVER ALVEY WASH NEAR THE TOWN OF
ESCALANTE...WHICH FLOWS INTO THE ESCALANTE RIVER.
* THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER
MAINLY RURAL AREAS OF THE INDICATED COUNTY.
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 3770 11167 3778 11162 3778 11157 3773 11161
3762 11158 3757 11164 3760 11174
$$
HOSENFELD/MCINERNEY2 follow-up statements
345
WGUS75 KSLC 292227
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
427 PM MDT WED JUN 29 2011
UTC017-292315-
/O.CON.KSLC.FF.W.0002.000000T0000Z-110629T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARFIELD UT-
427 PM MDT WED JUN 29 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM MDT FOR SOUTH
CENTRAL GARFIELD COUNTY...INCLUDING ALVEY WASH NEAR THE CITY OF
ESCALANTE...
AT 418 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE HEAVY RAIN HAS MOVED NORTH OF THE WARNED AREA.
HEAVY RUNOFF WILL CONTINUE ALONG ALVEY WASH THROUGH 515 PM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3770 11167 3778 11162 3778 11157 3773 11161
3762 11158 3757 11164 3760 11174
$$
HOSENFELD178
WGUS75 KSLC 292311
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
511 PM MDT WED JUN 29 2011
UTC017-292320-
/O.EXP.KSLC.FF.W.0002.000000T0000Z-110629T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARFIELD UT-
511 PM MDT WED JUN 29 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 515 PM MDT FOR ALVEY WASH
IN SOUTH CENTRAL GARFIELD COUNTY...
THUNDERSTORMS HAVE MOVED OUT OF THE AREA...AND RUNOFF HAS
DIMINISHED. THUNDERSTORMS ARE STILL DEVELOPING IN THE AREA...BUT
NONE ARE THREATENING ALVEY WASH. THEREFORE... THE FLASH FLOOD
WARNING HAS BEEN ALLOWED TO EXPIRE. MONITOR NOAA WEATHER RADIO OR
LOCAL TELEVISION OR RADIO FOR THE LATEST WEATHER INFORMATION.
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 3770 11167 3778 11162 3778 11157 3773 11161
3762 11158 3757 11164 3760 11174
$$
HOSENFELDThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 1:40 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Salt Lake | 20 min |
| Jun 29, 1:58 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Salt Lake, Summit | 32 min |
| Jun 29, 2:55 PM MDT | Special Weather Statement | SLC | Cache, Rich | 50 min |
| Jun 29, 2:58 PM MDT | Severe Thunderstorm Warning | SLC | Cache, Rich | 19 min |
| Jun 29, 3:16 PM MDT | Special Weather Statement | SLC | Salt Lake | 44 min |
| Jun 29, 3:46 PM MDT | Severe Thunderstorm Warning | SLC | Carbon, Duchesne | 29 min |
| Jun 29, 3:50 PM MDT | Red Flag Warning | SLC | 29 hr | |
| Jun 29, 3:53 PM MDT | Special Weather Statement | SLC | Davis, Salt Lake | 52 min |
| Jun 29, 3:58 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Morgan, Salt Lake | 32 min |
| Jun 29, 4:14 PM MDT | Special Weather Statement | SLC | Cache, Rich, Weber | 46 min |
| Jun 29, 4:22 PM MDT | Special Weather Statement | SLC | Weber | 23 min |
| Jun 29, 4:34 PM MDT | Severe Thunderstorm Warning | SLC | Garfield, Kane | 26 min |
| Jun 29, 5:03 PM MDT | Severe Thunderstorm Warning | SLC | Garfield, Kane, San Juan | 27 min |
| Jun 29, 5:24 PM MDT | Severe Thunderstorm Warning | SLC | Emery, Sanpete, Sevier | 25 min |
| Jun 29, 5:55 PM MDT | Special Weather Statement | SLC | Wasatch | 50 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.