Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 22, NWS Brownsville, TX

September 15, 2002Starr County, Texas

NWS Brownsville, TX issued this flash flood warning at Sep 15, 2002, 1:20 PM CDT for Starr County, Texas. It was in force for 115 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 15, 2002, 1:20 PM CDT (18:20 UTC)
Expired
Sep 15, 2002, 3:15 PM CDT
In force
115 min
Issued by
NWS Brownsville, TX
Area
Counties, with a storm outline in the text

County Starr County, TX

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 12:00Z, 6.3 hours before the alert went out and 154 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, Brownsville Intl, TX at 12:00Z on 2002-09-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2284 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, Brownsville Intl, TX at 12:00Z on 2002-09-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
2284 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
621 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
32 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 KBRO 151820
FFWBRO
TXC427-152015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
115 PM CDT SUN SEP 15 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  STARR COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 315 PM CDT

* AT 110 PM CDT...RADAR INDICATED THUNDERSTORMS HAD DROPPED ABOUT 
ONE AND A HALF INCHES OF RAIN OVER SECTIONS OF CENTRAL AND NORTHERN 
STARR COUNTY...DURING THE PAST HOUR. ADDITIONAL THUNDERSTORMS WILL 
MOVE NORTH ACROSS THE COUNTY OUT OF MEXICO AND DUMP ADDITIONAL RAIN 
IN THE NEXT COUPLE OF HOURS. STORMS ARE MOVING NORTH AT 15 MPH.

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
  WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH
  FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH
  FLOODING INCLUDE...RIO GRANDE CITY AND GARCIASVILLE.

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF 
SMALL CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES AND 
ARROYOS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

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.

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.

LAT...LON 2617 9902 2604 9887 2675 9837 2677 9894

$$

SIERRA

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 15, 2:04 PM CDTFlash Flood WarningBROKenedy, Willacy116 min
Sep 15, 2:14 PM CDTFlash Flood WarningBROKenedy, Willacy106 min
Sep 15, 3:27 PM CDTFlash Flood WarningBROStarr58 min
Sep 15, 3:56 PM CDTFlash Flood WarningBROHidalgo64 min
Sep 15, 4:07 PM CDTTornado WarningBROCameron, Willacy38 min
Sep 15, 4:16 PM CDTSpecial Marine WarningBRO44 min
Sep 15, 4:16 PM CDTSpecial Marine WarningBRO44 min
Sep 15, 4:30 PM CDTFlash Flood WarningBROStarr55 min
Sep 15, 5:09 PM CDTSpecial Marine WarningBRO51 min
Sep 15, 5:10 PM CDTFlash Flood WarningBROHidalgo110 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.