Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 9, NWS Brownsville, TX

May 17, 2002Cameron County, Hidalgo County, Willacy County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at May 17, 2002, 8:28 PM CDT for Cameron County, Hidalgo County, Willacy County, Texas. It was in force for 77 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
May 17, 2002, 8:28 PM CDT (01:28 UTC)
Expired
May 17, 2002, 9:45 PM CDT
In force
77 min
Issued by
NWS Brownsville, TX
Area
Counties, with a storm outline in the text

Counties Cameron County, TX, Hidalgo County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 61 km from the middle of the area, began a volume at 01:36 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 00:00Z, 1.5 hours before the alert went out and 63 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 00:00Z on 2002-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3506 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, Brownsville Intl, TX at 00:00Z on 2002-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.193958Sfc1 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
3506 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
830 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
31 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KBRO 180128
SVRBRO
TXC061-215-489-180245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
823 PM CDT FRI MAY 17 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CAMERON COUNTY IN SOUTH CENTRAL TEXAS
  WILLACY COUNTY IN SOUTH CENTRAL TEXAS
  HIDALGO COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 945 PM CDT

* AT 814 PM CDT...DOPPLER RADAR SHOWED A BOWING LINE OF SEVERE       
  THUNDERSTORMS NEAR ALTON AND PHARR...MOVING NORTHEAST AT 35        
  MPH. THIS LINE OF SEVERE THUNDERSTORMS WILL LIKELY PRODUCE HAIL TO 
  THE SIZE OF NICKELS...AND WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   EDINBURG...MACLLEN...DONNA BY 830 PM CDT.
   WESLACO...PROGRESO BY 835 PM CDT.
   ELSA...MILA DOCE...MERCEDES BY 840 PM CDT.
   EDCOUCH BY 845 PM CDT.
   LA VILLA...LA FERIA BY 850 PM CDT.
   SANTA ROSA BY 855 PM CDT.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

LAT...LON 2658 9844 2589 9798 2589 9708 2661 9725

PHILO

The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 7:07 PM CDTSevere Thunderstorm WarningBROStarr53 min
May 17, 7:31 PM CDTSevere Thunderstorm WarningBROZapata59 min
May 17, 7:35 PM CDTSevere Thunderstorm WarningBROHidalgo55 min
May 17, 7:47 PM CDTSevere Thunderstorm WarningBROJim Hogg58 min
May 17, 7:53 PM CDTSevere Thunderstorm WarningBROHidalgo, Starr52 min
May 17, 8:15 PM CDTSevere Thunderstorm WarningBROBrooks, Kenedy60 min
May 17, 8:48 PM CDTSevere Thunderstorm WarningBROStarr42 min
May 17, 9:02 PM CDTTornado WarningBROBrooks28 min
May 17, 9:06 PM CDTSevere Thunderstorm WarningBROJim Hogg39 min
May 17, 9:14 PM CDTSevere Thunderstorm WarningBROKenedy46 min
May 17, 9:33 PM CDTSevere Thunderstorm WarningBROCameron, Hidalgo, Willacy72 min
May 17, 9:33 PM CDTSevere Thunderstorm WarningBROBrooks72 min
May 17, 9:36 PM CDTSevere Thunderstorm WarningBROCameron, Hidalgo, Willacy69 min
May 17, 9:42 PM CDTTornado WarningBROCameron, Hidalgo, Kenedy, Willacy33 min
May 17, 10:15 PM CDTTornado WarningBROCameron, Hidalgo, Kenedy, Willacy45 min
May 17, 10:21 PM CDTSpecial Marine WarningBRO84 min
May 17, 10:21 PM CDTSpecial Marine WarningBRO84 min
May 17, 10:43 PM CDTFlash Flood WarningBROKenedy3 hr
May 17, 11:05 PM CDTSevere Thunderstorm WarningBROCameron40 min
May 17, 11:55 PM CDTSpecial Marine WarningBRO13 hr
May 17, 11:55 PM CDTSpecial Marine WarningBRO13 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm 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.