Alert archive / Utah / Flash Flood Warnings in 2014

Flash Flood Warning 21, NWS Salt Lake City, UT

August 13, 2014Kane County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Aug 13, 2014, 1:32 PM MDT for Kane County, Utah. It was in force for 6 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 13, 2014, 1:32 PM MDT (19:32 UTC)
Expired
Aug 13, 2014, 7:30 PM MDT
In force
6 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), 78 km from the middle of the area, began a volume at 19:34 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, 7.5 hours before the alert went out and 237 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.

Skew-T log-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 12:00Z on 2014-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 28 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2014-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
28 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
574 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

272 
WGUS55 KSLC 131932
FFWSLC
UTC025-140130-
/O.NEW.KSLC.FF.W.0021.140813T1932Z-140814T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
132 PM MDT WED AUG 13 2014

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL KANE COUNTY IN UTAH...

* UNTIL 730 PM MDT WEDNESDAY
    
* AT 126 PM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS MOVING NORTH 
  OUT OF THE ARIZONA/UTAH BORDER.  INTENSE RAINFALL IS FALLING OVER 
  MULTIPLE DRAINAGES THAT ARE VERY PRONE TO FLASH FLOODING.
  
* THE PARIA...BUCKSKIN...JOHNSON...WAHWEEP...AND WARM SPRING 
  DRAINAGES ARE ANTICIPATED TO FLASH FLOOD SHORTLY. THESE AREAS ARE 
  LOCATED EAST OF KANAB AND WEST OF LAKE POWELL ALONG THE SOUTHERN 
  UTAH BORDER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THESE AREAS...PLEASE TAKE ACTION TO ENSURE FOR YOUR 
SAFETY.

&&

LAT...LON 3753 11173 3701 11138 3701 11240 3731 11246
      3744 11231 3744 11222 3752 11207

$$

MCINERNEY
1 follow-up statement
066 
WGUS75 KSLC 132156
FFSSLC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
356 PM MDT WED AUG 13 2014

UTC025-132205-
/O.CAN.KSLC.FF.W.0021.000000T0000Z-140814T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE UT-
356 PM MDT WED AUG 13 2014

...THE FLASH FLOOD WARNING FOR CENTRAL KANE COUNTY IS CANCELLED...

THE HEAVY RAIN OVER SOUTHERN UTAH HAS SLOWED TO THE POINT WHERE 
FLASH FLOODING IS NO LONGER ANTICIPATED.  AS SUCH...THE FLASH FLOOD 
WARNING IS CANCELLED.

LAT...LON 3753 11173 3701 11138 3701 11240 3731 11246
      3744 11231 3744 11222 3752 11207

$$

MCINERNEY

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 12, 6:15 PM MDTSevere Thunderstorm WarningSLCDavis, Salt Lake, Weber45 min
Aug 12, 6:39 PM MDTSpecial Weather StatementSLCCache, Morgan66 min
Aug 12, 7:19 PM MDTSpecial Weather StatementSLCRich56 min
Aug 12, 7:20 PM MDTAreal Flood AdvisorySLCDavis, Salt Lake, Weber85 min
Aug 12, 8:00 PM MDTSpecial Weather StatementSLC60 min
Aug 13, 4:17 PM MDTSpecial Weather StatementSLC58 min
Aug 13, 5:37 PM MDTSpecial Weather StatementSLCTooele53 min

Nearby

Flash Flood Warnings in Utah, 2014Every flash flood warning in 2014

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.