Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 39, NWS San Angelo, TX

July 4, 2002Sterling County, Texas

NWS San Angelo, TX issued this flash flood warning at Jul 4, 2002, 6:02 PM CDT for Sterling County, Texas. 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 4, 2002, 6:02 PM CDT (23:02 UTC)
Expired
Jul 4, 2002, 9:00 PM CDT
In force
3 hr
Issued by
NWS San Angelo, TX
Area
Counties, with a storm outline in the text

County Sterling County, TX

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 11.0 hours before the alert went out and 107 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, Midland Regional, TX at 12:00Z on 2002-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 262 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 12:00Z on 2002-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
262 J/kg
Mixed-layer CIN
-173 J/kg
Mixed-layer LCL
896 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KSJT 042302
FFWSJT
TXC431-050200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
600 PM CDT THU JUL 4 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  STERLING COUNTY IN SOUTHWEST TEXAS

* UNTIL 900 PM CDT

* AT 558 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY 
  RAIN 5 MILES NORTHWEST OF STERLING CITY...MOVING SOUTHEAST AT 10   
  MPH. THE HEAVY RAIN PRODUCING THUNDERSTORM WILL REACH STERLING     
  CITY BY 620 PM. 

* DOPPLER RADAR ESTIMATES INDICATED 1 TO 3 INCHES OF RAIN HAS        
  FALLEN IN NORTHWEST STERLING COUNTY SINCE 430 PM. ANOTHER 1 TO 2   
  INCHES OF RAINFALL IS LIKELY BY 8 PM. MOTORISTS TRAVELING NEAR     
  STERLING CITY ON US HIGHWAY 87...AND STATE HIGHWAYS 158 AND 163    
  SHOULD BE EXTRA CAUTIOUS WHEN APPROACHING LOW WATER CROSSINGS.   

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

LAT...LON 3174 10124 3174 10084 3208 10083 3208 10122
1 follow-up statement
000 
WGUS74 KSJT 050107
FFSSJT
TXC431-050115-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
806 PM CDT THU JUL 4 2002

...THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS CANCELLED THE FLASH
FLOOD WARNING FOR STERLING COUNTY...

AT 805 PM CDT...THE RAIN HAS ENDED OVER STERLING COUNTY AND FLOODING 
IS NO LONGER EXPECTED...THEREFORE THE FLASH FLOOD WARNING FOR 
STERLING COUNTY HAS BEEN CANCELLED.

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 4, 12:04 AM CDTFlash Flood WarningSJTBrown, Coleman6 hr
Jul 4, 7:47 AM CDTFlash Flood WarningSJTSutton3 hr
Jul 4, 5:40 PM CDTFlash Flood WarningSJTCoke3 hr
Jul 4, 5:43 PM CDTFlash Flood WarningSJTCoke3 hr
Jul 4, 6:43 PM CDTFlash Flood WarningSJTTom Green3 hr

Nearby

Flash Flood Warnings in Texas, 2002Every flash flood warning in 2002

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.