Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 21, NWS Brownsville, TX

April 25, 2003Hidalgo County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Apr 25, 2003, 6:54 PM CDT for Hidalgo County, Texas. It was in force for 36 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: Apr 25, 2003, 6:54 PM CDT (23:54 UTC)
Expired: Apr 25, 2003, 7:30 PM CDT
In force: 36 min
Issued by: NWS Brownsville, TX
Area: Counties, with a storm outline in the text

County Hidalgo County, TX

The radar

The Brownsville radar (KBRO), 107 km from the middle of the area, began a volume at 23:56 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, 11.9 hours before the alert went out and 110 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 924 J/kg
Mixed-layer CIN: -501 J/kg
Mixed-layer LCL: 1488 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -88 m²/s²
0-3 km storm-relative helicity: -60 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.

991 
WUUS54 KBRO 252354
SVRBRO
TXC215-260030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
652 PM CDT FRI APR 25 2003

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN HIDALGO COUNTY IN DEEP SOUTH TEXAS

* UNTIL 730 PM CDT

* AT 652 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN          
  BROWNSVILLE INDICATED A SEVERE THUNDERSTORM 10 MILES NORTHWEST OF  
  SAN MANUEL MOVING SOUTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   SAN MANUEL BY 705 PM CDT.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 2675 9826 2662 9840 2630 9803 2654 9799

$$

SPEECE

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 5:08 PM CDT	Severe Thunderstorm Warning	BRO	Brooks, Hidalgo, Kenedy	52 min
Apr 25, 5:21 PM CDT	Severe Thunderstorm Warning	BRO	Brooks	39 min
Apr 25, 5:26 PM CDT	Severe Thunderstorm Warning	BRO	Kenedy	64 min
Apr 25, 5:59 PM CDT	Severe Thunderstorm Warning	BRO	Hidalgo, Kenedy, Willacy	46 min
Apr 25, 6:02 PM CDT	Severe Thunderstorm Warning	BRO	Kenedy, Willacy	43 min
Apr 25, 6:07 PM CDT	Severe Thunderstorm Warning	BRO	Brooks, Jim Hogg, Starr	53 min
Apr 25, 6:11 PM CDT	Severe Thunderstorm Warning	BRO	Kenedy	49 min
Apr 25, 6:48 PM CDT	Severe Thunderstorm Warning	BRO	Cameron, Hidalgo, Willacy	57 min

Nearby

Severe Thunderstorm Warnings in Texas, 2003 Every severe thunderstorm warning in 2003

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.