Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 26, NWS Brownsville, TX

September 15, 2002Hidalgo County, Texas

NWS Brownsville, TX issued this flash flood warning at Sep 15, 2002, 3:56 PM CDT for Hidalgo County, Texas. It was in force for 64 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, 3:56 PM CDT (20:56 UTC)
Expired
Sep 15, 2002, 5:00 PM CDT
In force
64 min
Issued by
NWS Brownsville, TX
Area
Counties, with a storm outline in the text

County Hidalgo County, TX

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 12:00Z, 8.9 hours before the alert went out and 101 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 152056
FFWBRO
TXC215-152145-

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

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN HIDALGO COUNTY IN DEEP SOUTH TEXAS

* UNTIL 500 PM CDT

* AT 350 PM CDT...RADAR INDICATED SCATTERED THUNDERSTORMS OVER 
SOUTHERN HIDALGO COUNTY. THESE STORMS ARE MOVING NORTHWEST AT 10 TO 
15 MPH. HEAVIEST RAINFALL IS ALONG HIGHWAY 83...MAKING FOR HAZARDOUS 
DRIVING CONDITIONS. RADAR INDICATES RAINFALL RATES IN THE STRONGEST 
STORMS ARE AROUND 2 INCHES PER HOUR.

* 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...EDINBURG...EDCOUCH AND ELSA.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER 
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

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 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.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE.

LAT...LON 2627 9856 2618 9801 2641 9790 2649 9846

$$
SIERRA

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 15, 1:20 PM CDTFlash Flood WarningBROStarr115 min
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, 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.