Alert archive / Utah / Flash Flood Warnings in 2003

Flash Flood Warning 28, NWS Salt Lake City, UT

August 15, 2003Kane County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Aug 15, 2003, 3:27 PM MDT for Kane County, Utah. It was in force for 2 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 15, 2003, 3:27 PM MDT (21:27 UTC)
Expired
Aug 15, 2003, 5:30 PM MDT
In force
2 hr
Issued by
NWS Salt Lake City, UT
Area
Counties, with a storm outline in the text

County Kane County, UT

The radar

The Cedar City radar (KICX), 59 km from the middle of the area, began a volume at 21:27 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 226 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 2003-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 15 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 2003-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
15 J/kg
Mixed-layer CIN
-189 J/kg
Mixed-layer LCL
1238 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
-38 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 152127
FFWSLC
UTC025-152330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
327 PM MDT FRI AUG 15 2003

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

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

* UNTIL 530 PM MDT

* AT 320 PM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY   
  HEAVY RAIN OVER SOUTH CENTRAL KANE COUNTY...OR ABOUT 8 MILES    
  EAST OF KANAB.  THE AREA OF HEAVY RAIN WAS NEARLY STATIONARY.

THIS WARNING IS FOR JOHNSON WASH AND ALL OF ITS UPSTREAM DRAINAGES. 
THE HEAVY RAIN HAS COVERED MOST OF THE UPSTREAM AREAS FOR THIS WASH. 
RESIDENTS LIVING ALONG JOHNSON CANYON ROAD SHOULD EXPECT VERY HIGH 
STREAM FLOW THROUGH EARLY EVENING. 

MOVE TO HIGHER GROUND IMMEDIATELY IF WATER BEGINS RISING IN YOUR 
AREA. 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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED 
QUICKLY. 

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
SALT LAKE CITY.

LAT...LON 3701 11247 3700 11230 3749 11230 3742 11242
          3729 11246

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 6:45 PM MDTFlash Flood WarningSLCGarfield2 hr
Aug 14, 6:47 PM MDTFlash Flood WarningSLCGarfield, Kane118 min
Aug 14, 7:21 PM MDTFlash Flood WarningSLCEmery114 min
Aug 14, 8:12 PM MDTSevere Thunderstorm WarningSLCGarfield, Kane, San Juan63 min
Aug 14, 9:25 PM MDTSevere Thunderstorm WarningSLCGarfield, Kane60 min
Aug 15, 4:02 PM MDTFlash Flood WarningSLCGarfield, Piute88 min
Aug 15, 4:40 PM MDTSevere Thunderstorm WarningSLCIron35 min

Nearby

Flash Flood Warnings in Utah, 2003Every flash flood warning in 2003

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.