Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 39, NWS Brownsville, TX

May 14, 2004Willacy County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at May 14, 2004, 12:29 AM CDT for Willacy County, Texas. It was in force for 31 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 14, 2004, 12:29 AM CDT (05:29 UTC)
Expired
May 14, 2004, 1:00 AM CDT
In force
31 min
Issued by
NWS Brownsville, TX
Area
Counties, with a storm outline in the text

County Willacy County, TX

The radar

The Brownsville radar (KBRO), 76 km from the middle of the area, began a volume at 05:29 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 13, 11:45 PM CDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 00:00Z, 5.5 hours before the alert went out and 79 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 2004-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3234 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 2004-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 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
3234 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
633 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KBRO 140529
SVRBRO
TXC489-140600-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1229 AM CDT FRI MAY 14 2004

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

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

* UNTIL 100 AM CDT

* AT 1229 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM LOCATED 10 MILES EAST OF SAN
  MANUEL...AND MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   RAYMONDVILLE BY 1240 AM CDT.

THE TOWN OF SAN PERLITA IS ALSO IN THE PATH OF THIS STORM.

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 2660 9799 2647 9799 2643 9741 2657 9738

$$

PHILO

The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 10:27 PM CDTSevere Thunderstorm WarningBROJim Hogg, Starr, Zapata63 min
May 13, 10:55 PM CDTTornado WarningBROJim Hogg, Starr65 min
May 13, 11:24 PM CDTSevere Thunderstorm WarningBROBrooks, Hidalgo, Jim Hogg, Starr66 min
May 13, 11:27 PM CDTFlash Flood WarningBROJim Hogg, Starr2 hr
May 13, 11:44 PM CDTSpecial Marine WarningBRO61 min
May 13, 11:44 PM CDTSpecial Marine WarningBRO61 min
May 14, 12:25 AM CDTSevere Thunderstorm WarningBROKenedy35 min
May 14, 12:44 AM CDTSpecial Marine WarningBRO61 min
May 14, 12:44 AM CDTSpecial Marine WarningBRO61 min
May 14, 12:49 AM CDTTornado WarningBROKenedy19 min
May 14, 1:00 AM CDTFlash Flood WarningBROBrooks, Hidalgo, Kenedy, Willacy3 hr
May 14, 1:44 AM CDTSpecial Marine WarningBRO2 hr
May 14, 3:44 AM CDTSpecial Marine WarningBRO61 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004Every severe thunderstorm warning in 2004

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.