Alert archive / Texas / Tornado Warnings in 2013

Tornado Warning 1, NWS Brownsville, TX

May 11, 2013Zapata County, Texas

NWS Brownsville, TX issued this tornado warning at May 11, 2013, 12:53 AM CDT for Zapata County, Texas. It was in force for 37 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 11, 2013, 12:53 AM CDT (05:53 UTC)
Expired: May 11, 2013, 1:30 AM CDT
In force: 37 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon

County Zapata County, TX

The radar

The Corpus Christi radar (KCRP), 177 km from the middle of the area, began a volume at 05:56 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 watch it was issued in

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

Issued	Product	Office	Lasted
May 10, 10:53 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 5.9 hours before the alert went out and 190 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: 1588 J/kg
Mixed-layer CIN: -147 J/kg
Mixed-layer LCL: 499 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: -40 m²/s²
Significant tornado parameter: -0.3
Supercell composite: -1.8

Open this sounding in Storm Lab

The text

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

373 
WFUS54 KBRO 110553
TORBRO
TXC505-110630-
/O.NEW.KBRO.TO.W.0001.130511T0553Z-130511T0630Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1253 AM CDT SAT MAY 11 2013

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL ZAPATA COUNTY IN DEEP SOUTH TEXAS.

* UNTIL 130 AM CDT

* AT 1253 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A TORNADO ON RADAR OVER BUSTAMANTE...MOVING EAST AT 15
  MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  BUSTAMANTE.
  ESCOBA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS IN AN
INTERIOR ROOM OR CLOSET. DO NOT WAIT UNTIL YOU CAN SEE OR HEAR THE
TORNADO. PUT AS MANY WALLS BETWEEN YOURSELF AND THIS STORM AS
POSSIBLE. TRAILER HOMES ARE EASILY DESTROYED BY TORNADOES AND SHOULD
BE ABANDONED IMMEDIATELY FOR STRONGER SHELTER.

IF TRAVELING...FIND STURDY SHELTER IMMEDIATELY OR PULL OVER AND GET
BELOW THE DASHBOARD IF DEBRIS IS SIGHTED.

PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR
HIGHER...HAIL THE SIZE OF PENNIES OR LARGER...AND ANY WIND DAMAGE TO
YOUR NATIONAL WEATHER SERVICE IN BROWNSVILLE BY CALLING 956-504-1432.

&&

LAT...LON 2708 9900 2696 9904 2698 9922 2709 9922
TIME...MOT...LOC 0553Z 273DEG 14KT 2703 9915

$$

55

1 follow-up statement

908 
WWUS54 KBRO 110607
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
107 AM CDT SAT MAY 11 2013

TXC505-110617-
/O.CAN.KBRO.TO.W.0001.000000T0000Z-130511T0630Z/
ZAPATA-
107 AM CDT SAT MAY 11 2013

...THE TORNADO WARNING FOR CENTRAL ZAPATA COUNTY IS CANCELLED...

AT 107 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE
TORNADO THREAT HAD DIMINISHED...THUS THE WARNING HAS BEEN
CANCELLED.


LAT...LON 2708 9900 2696 9904 2698 9922 2709 9922
TIME...MOT...LOC 0607Z 273DEG 14KT 2703 9909

$$

55

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 11:01 PM CDT	Severe Thunderstorm Warning	BRO	Zapata	59 min
May 10, 11:57 PM CDT	Severe Thunderstorm Warning	BRO	Zapata	33 min
May 11, 12:15 AM CDT	Areal Flood Advisory	BRO	Zapata	60 min
May 11, 12:41 AM CDT	Severe Thunderstorm Warning	BRO	Zapata	34 min
May 11, 12:49 AM CDT	Severe Thunderstorm Warning	BRO	Starr, Zapata	26 min
May 11, 1:12 AM CDT	Severe Thunderstorm Warning	BRO	Starr, Zapata	33 min
May 11, 1:21 AM CDT	Areal Flood Advisory	BRO	Jim Hogg, Starr, Zapata	84 min
May 11, 3:47 AM CDT	Special Marine Warning	BRO		58 min
May 11, 4:10 AM CDT	Special Marine Warning	BRO		65 min
May 11, 4:41 AM CDT	Special Marine Warning	BRO		64 min
May 11, 5:00 AM CDT	Areal Flood Advisory	BRO	Cameron, Willacy	60 min
May 11, 5:12 AM CDT	Special Marine Warning	BRO		93 min
May 11, 6:24 AM CDT	Special Marine Warning	BRO		96 min
May 11, 6:45 AM CDT	Special Marine Warning	BRO		60 min

Nearby

Tornado Warnings in Texas, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.