Alert archive / Utah / Flash Flood Warnings in 2007

Flash Flood Warning 41, NWS Salt Lake City, UT

July 26, 2007Garfield County, Iron County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 26, 2007, 3:29 PM MDT for Garfield County, Iron 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
Jul 26, 2007, 3:29 PM MDT (21:29 UTC)
Expired
Jul 26, 2007, 6:30 PM MDT
In force
3 hr
Issued by
NWS Salt Lake City, UT
Area
Counties, with a storm outline in the text

Counties Garfield County, UT, Iron County, UT

The radar

The Cedar City radar (KICX), 53 km from the middle of the area, began a volume at 21:32 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, 9.5 hours before the alert went out and 308 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 2007-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 22 joules per kilogram.LCLLFCEL10008507005003002001001 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 2007-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.1939Sfc1 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
22 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
1129 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
-40 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.

000 
WGUS55 KSLC 262133
FFWSLC
UTC017-021-270030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
329 PM MDT THU JUL 26 2007

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN GARFIELD COUNTY IN UTAH...
  EAST CENTRAL IRON COUNTY IN UTAH...

* UNTIL 630 PM MDT

* AT 323 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
HEAVY RAINFALL THAT MAY LEAD TO FLASH FLOODING ALONG THE BEAR RIVER 
INCLUDING SMITH CANYON AND BULL RUSH CREEK.  

* BOTH OF THESE TRIBUTARIES FLOWS INTO THE BEAR RIVER APPROXIMATELY 
15 MILES NORTH OF PANGUITCH NEAR THE INTERSECTION OF SR 20 AND US 
89. 

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 3785 11258 3785 11232 3793 11228 3812 11233
      3804 11246 3803 11255 3793 11257

$$

MCINERNEY/SMITH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 6:17 PM MDTSevere Thunderstorm WarningSLCDavis, Morgan, Weber43 min
Jul 25, 7:37 PM MDTFlash Flood WarningSLCJuab, Millard3 hr
Jul 26, 3:29 PM MDTFlash Flood WarningSLCGarfield3 hr
Jul 26, 5:18 PM MDTFlash Flood WarningSLCSanpete3 hr

Nearby

Flash Flood Warnings in Utah, 2007Every flash flood warning in 2007

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.