Alert archive / Utah / Flash Flood Warnings in 2011
Flash Flood Warning 13, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 26, 2011, 2:50 PM MDT for Kane County, Utah. It was in force for 5 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
- Jul 26, 2011, 2:50 PM MDT (20:50 UTC)
- Expired
- Jul 26, 2011, 7:45 PM MDT
- In force
- 5 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
County Kane County, UT
The radar
The Cedar City radar (KICX), 75 km from the middle of the area, began a volume at 20:54 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, 8.8 hours before the alert went out and 209 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
- 695 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 719 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
514
WGUS55 KSLC 262050
FFWSLC
UTC025-270145-
/O.NEW.KSLC.FF.W.0013.110726T2050Z-110727T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
250 PM MDT TUE JUL 26 2011
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL KANE COUNTY IN UTAH...
* UNTIL 745 PM MDT
* AT 245 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM SEVERAL THUNDERSTORMS MOVING ACROSS JOHNSON WASH
IN SOUTH CENTRAL KANE COUNTY.
* UP TO 3 INCHES OF RAIN HAS FALLEN IN JUST OVER AN HOUR IN THIS
LOCATION. FLASH FLOODING IS EXPECTED ALONG JOHNSON WASH TO THE
ARIZONA BORDER.
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 3700 11229 3700 11243 3716 11244 3716 11236
3704 11227
$$
KRUSE2 follow-up statements
928
WGUS75 KSLC 262256
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
456 PM MDT TUE JUL 26 2011
UTC025-270145-
/O.CON.KSLC.FF.W.0013.000000T0000Z-110727T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE UT-
456 PM MDT TUE JUL 26 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR SOUTH
CENTRAL KANE COUNTY...
AT 448 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE HEAVY RAIN THAT PROMPTED THE FLASH FLOOD WARNING HAS MOVED
EAST OF THE WARNED AREA IN SOUTH CENTRAL KANE COUNTY.
HOWEVER...DANGEROUS RUNOFF FROM EARLIER THUNDERSTORMS IS STILL
MOVING THROUGH AREA STREAMS AND NORMALLY DRY WASHES...INCLUDING
JOHNSON WASH.
RADAR ESTIMATES INDICATE THAT UP TO THREE INCHES OF RAIN FELL OVER
THE AREA EARLIER THIS AFTERNOON. ADDITIONAL SHOWERS AND
THUNDERSTORMS ARE EXPECTED TO CONTINUE TO MOVE OVER THE AREA INTO
THE EVENING HOURS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS AND NORMALLY DRY WASHES. IF CAUGHT IN A
CANYON...MOVE TO HIGHER GROUND IMMEDIATELY. DO NOT DRIVE YOUR
VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER
DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY.
&&
LAT...LON 3700 11229 3700 11243 3716 11244 3716 11236
3704 11227
$$
RG088 WGUS75 KSLC 270138 FFSSLC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 738 PM MDT TUE JUL 26 2011 UTC025-270147- /O.EXP.KSLC.FF.W.0013.000000T0000Z-110727T0145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KANE UT- 738 PM MDT TUE JUL 26 2011 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 745 PM MDT FOR SOUTH CENTRAL KANE COUNTY... RUNOFF FROM EARLIER PRECIPITATION HAS DIMINISHED GREATLY AND WATER LEVELS IN AREA STREAMS AND WASHES HAS DECREASED. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE. MONITOR NOAA WEATHER RADIO OR LOCAL TELEVISION OR RADIO FOR THE LATEST WEATHER INFORMATION. LAT...LON 3700 11229 3700 11243 3716 11244 3716 11236 3704 11227 $$ RG
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 6:54 PM MDT | Flash Flood Warning | SLC | Washington | 6 hr |
| Jul 26, 3:36 AM MDT | Flash Flood Watch | SLC | 18 hr | |
| Jul 26, 1:05 PM MDT | Areal Flood Advisory | SLC | Washington | 115 min |
| Jul 26, 2:34 PM MDT | Areal Flood Advisory | SLC | Kane | 3 hr |
| Jul 26, 3:26 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake, Utah | 31 min |
| Jul 26, 3:37 PM MDT | Areal Flood Advisory | SLC | Salt Lake | 3 hr |
| Jul 26, 4:05 PM MDT | Flash Flood Warning | SLC | Salt Lake | 3 hr |
| Jul 26, 4:40 PM MDT | Areal Flood Advisory | SLC | Salt Lake, Utah | 110 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.