Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 41, NWS Austin/San Antonio, TX

July 1, 2002Frio County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 1, 2002, 8:50 AM CDT for Frio 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 1, 2002, 8:50 AM CDT (13:50 UTC)
Expired
Jul 1, 2002, 11:45 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

County Frio County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 1.8 hours before the alert went out and 174 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, Del Rio, TX at 12:00Z on 2002-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 676 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 2002-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 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
676 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
625 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
19 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 
WGUS54 KEWX 011350
FFWSAT
TXC163-011645-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
847 AM CDT MON JUL 1 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  FRIO

* UNTIL 1145 AM CDT

* AT 847 AM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
  NEAR DERBY...DILLEY...AND DIVOT...MOVING NORTH AT 5 MPH.  RAINFALL 
  RATES OF 1 TO 3 INCHES PER HOUR WERE NOTED.  THIS RAINFALL WILL
  SPREAD INTO THE PEARSALL AND FM 1582 AREAS.  

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.
MOVE TO HIGHER GROUND.


LAT...LON 2866 9939 2867 9885 2896 9882 2905 9939

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 1, 4:28 AM CDTFlash Flood WarningEWXBexar2 hr
Jul 1, 6:36 AM CDTFlash Flood WarningEWXBexar3 hr
Jul 1, 6:56 AM CDTFlash Flood WarningEWXGonzales, Guadalupe2 hr
Jul 1, 7:48 AM CDTFlash Flood WarningEWXAtascosa117 min
Jul 1, 9:31 AM CDTFlash Flood WarningEWXAtascosa, Bexar2 hr
Jul 1, 12:07 PM CDTFlash Flood WarningEWXDimmit, Zavala3 hr
Jul 1, 12:12 PM CDTFlash Flood WarningEWXAtascosa, Bexar, Frio3 hr
Jul 1, 3:22 PM CDTFlash Flood WarningEWXKendall3 hr
Jul 1, 4:09 PM CDTFlash Flood WarningEWXMedina3 hr
Jul 1, 5:02 PM CDTFlash Flood WarningEWXBexar3 hr
Jul 1, 6:20 PM CDTFlash Flood WarningEWXKendall115 min

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.