Alert archive / Texas / Tornado Warnings in 2005

Tornado Warning 21, NWS Brownsville, TX

July 20, 2005Jim Hogg County, Zapata County, Texas

NWS Brownsville, TX issued this tornado warning at Jul 20, 2005, 8:04 PM CDT for Jim Hogg County, Zapata County, Texas. It was in force for 26 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: Jul 20, 2005, 8:04 PM CDT (01:04 UTC)
Expired: Jul 20, 2005, 8:30 PM CDT
In force: 26 min
Issued by: NWS Brownsville, TX
Area: Counties, with a storm outline in the text

Counties Jim Hogg County, TX, Zapata County, TX

The radar

The Corpus Christi radar (KCRP), 160 km from the middle of the area, began a volume at 01:06 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

Corpus Christi, TX (KCRP), launched 00:00Z, 1.1 hours before the alert went out and 173 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: 2913 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 745 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KBRO 210104
TORBRO
TXC247-505-210130-
/O.NEW.KBRO.TO.W.0021.050721T0104Z-050721T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
804 PM CDT WED JUL 20 2005

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL JIM HOGG COUNTY IN DEEP SOUTH TEXAS
  NORTHEASTERN ZAPATA COUNTY IN DEEP SOUTH TEXAS

* UNTIL 830 PM CDT

* AT 800 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR RANDADO...
  OR ABOUT 17 MILES SOUTHWEST OF HEBBRONVILLE...MOVING NORTHWEST AT
  35 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  RURAL NORTHEASTERN ZAPATA COUNTY AT 820 PM CDT
  RURAL NORTHWESTERN JIM HOGG COUNTY AT 820 PM CDT

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 2699 9883 2714 9872 2742 9917 2723 9931

$$

BC

2 follow-up statements

000 
WWUS54 KBRO 210118
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
818 PM CDT WED JUL 20 2005

TXC247-505-210130-
/O.CON.KBRO.TO.W.0021.000000T0000Z-050721T0130Z/
JIM HOGG TX-ZAPATA TX-
818 PM CDT WED JUL 20 2005

...A TORNADO WARNING CONTINUES UNTIL 830 PM CDT FOR NORTHEASTERN
ZAPATA AND NORTHWESTERN JIM HOGG COUNTIES...

AT 816 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED OVER WEST CENTRAL JIM
HOGG COUNTY...OR ABOUT 15 MILES SOUTHWEST OF HEBBRONVILLE...MOVING
NORTHWEST AT 35 MPH.

THE TORNADO WILL BE NEAR...
  RURAL NORTHEASTERN ZAPATA COUNTY AT 830 PM CDT
  RURAL NORTHWESTERN JIM HOGG COUNTY AT 830 PM CDT

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 2709 9894 2719 9880 2743 9910 2727 9918

$$

BC

000 
WWUS54 KBRO 210129
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
830 PM CDT WED JUL 20 2005

TXC247-505-210140-
/O.EXP.KBRO.TO.W.0021.000000T0000Z-050721T0130Z/
JIM HOGG TX-ZAPATA TX-
830 PM CDT WED JUL 20 2005

...THE TORNADO WARNING FOR NORTHEASTERN ZAPATA AND WEST CENTRAL JIM
HOGG COUNTIES EXPIRES AT 830 PM CDT...

LAT...LON 2709 9894 2719 9880 2743 9910 2727 9918

$$

BC

Nearby

Tornado Warnings in Texas, 2005 Every tornado warning in 2005 Tornadoes in 2005

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.