Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 14, NWS Brownsville, TX

September 9, 2002Kenedy County, Texas

NWS Brownsville, TX issued this flash flood warning at Sep 9, 2002, 3:58 PM CDT for Kenedy County, Texas. It was in force for 107 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 9, 2002, 3:58 PM CDT (20:58 UTC)
Expired
Sep 9, 2002, 5:45 PM CDT
In force
107 min
Issued by
NWS Brownsville, TX
Area
Counties, with a storm outline in the text

County Kenedy County, TX

The radar

The Brownsville radar (KBRO), 105 km from the middle of the area, began a volume at 20:57 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

Brownsville Intl, TX (KBRO), launched 12:00Z, 9.0 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, Brownsville Intl, TX at 12:00Z on 2002-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 510 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 2002-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -60 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
510 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
685 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-60 m²/s²
0-3 km storm-relative helicity
-35 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 092058
FFWBRO
TXC261-092245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
354 PM CDT MON SEP 9 2002

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

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

* UNTIL 545 PM CDT

* AT 354 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN          
  BROWNSVILLE INDICATED STRONG THUNDERSTORMS WITH VERY HEAVY         
  RAINFALL 18 MILES SOUTH OF THE BORDER PATROL CHECKPOINT ON HIGHWAY 
  77...OR 19 MILES NORTH OF RAYMONDVILLE...MOVING SOUTHEAST AT 5 TO  
  10 MPH. DOPPLER RADAR ESTIMATED THAT THESE STORMS ARE PRODUCING    
  RAINFALL AMOUNTS FROM 2 TO 4 INCHES OVER A ONE HOUR PERIOD.   

* 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...BORDER PATROL...AND THE SOUTHERN PORTIONS OF    
  HIGHWAY 77 IN KENEDY COUNTY.

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 2692 9798 2663 9799 2660 9746 2692 9750

$$

SPEECE

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 8:36 PM CDTSpecial Marine WarningBRO114 min
Sep 8, 8:36 PM CDTSpecial Marine WarningBRO114 min
Sep 8, 9:32 PM CDTSevere Thunderstorm WarningBROBrooks58 min
Sep 9, 2:42 AM CDTSevere Thunderstorm WarningBROHidalgo, Kenedy, Willacy48 min
Sep 9, 2:51 PM CDTFlash Flood WarningBROKenedy3 hr
Sep 9, 4:21 PM CDTFlash Flood WarningBROHidalgo114 min
Sep 9, 5:00 PM CDTSpecial Marine WarningBRO3 hr
Sep 9, 5:33 PM CDTSevere Thunderstorm WarningBROCameron42 min
Sep 9, 5:52 PM CDTFlash Flood WarningBROCameron113 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; radar from the NEXRAD Level II archive.