Alert archive / Texas / Tornado Warnings in 2005

Tornado Warning 17, NWS Brownsville, TX

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

NWS Brownsville, TX issued this tornado warning at Jul 20, 2005, 3:17 PM CDT for Jim Hogg County, Zapata County, Texas. It was in force for 28 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, 3:17 PM CDT (20:17 UTC)
Expired
Jul 20, 2005, 3:45 PM CDT
In force
28 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), 180 km from the middle of the area, began a volume at 20:19 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
Jul 20, 9:40 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 8.3 hours before the alert went out and 192 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, Corpus Christi, TX at 12:00Z on 2005-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1529 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2005-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 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
1529 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
798 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
124 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.

000 
WFUS54 KBRO 202018
TORBRO
TXC247-505-202045-
/O.NEW.KBRO.TO.W.0017.050720T2017Z-050720T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
317 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
  CENTRAL ZAPATA COUNTY IN DEEP SOUTH TEXAS
  THIS INCLUDES THE CITY OF SAN YGNACIO

* UNTIL 345 PM CDT

* AT 317 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES         
  SOUTHEAST OF ESCOBA...OR ABOUT 23 MILES EAST OF ZAPATA. THIS STORM 
  IS MOVING WEST AT 45 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  9 MILES NORTHEAST OF SAN YGNACIO BY 345 PM CDT

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING
FOR DEEP SOUTH TEXAS.

LAT...LON 2689 9890 2706 9884 2723 9942 2702 9950

$$

SPEECE
2 follow-up statements
000 
WWUS54 KBRO 202037
SVSBRO

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

TXC247-505-202045-
/O.CON.KBRO.TO.W.0017.000000T0000Z-050720T2045Z/
JIM HOGG TX-ZAPATA TX-
336 PM CDT WED JUL 20 2005

...A TORNADO WARNING CONTINUES UNTIL 345 PM CDT FOR CENTRAL ZAPATA
AND WEST CENTRAL JIM HOGG COUNTIES...

AT 330 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO PRODUCING THUNDERSTORM WITHIN THE WARNING AREA.  
THIS STORM WAS LOCATED 8 MILES SOUTHWEST OF ESCOBA...OR ABOUT 12 
MILES NORTHEAST OF ZAPATA...MOVING WEST AT 35 MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING
FOR DEEP SOUTH TEXAS.

LAT...LON 2689 9890 2706 9884 2723 9942 2702 9950

$$

SPEECE
000 
WWUS54 KBRO 202045
SVSBRO

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

TXC247-505-202054-
/O.EXP.KBRO.TO.W.0017.000000T0000Z-050720T2045Z/
JIM HOGG TX-ZAPATA TX-
344 PM CDT WED JUL 20 2005

...THE TORNADO WARNING FOR CENTRAL ZAPATA AND WEST CENTRAL JIM HOGG
COUNTIES EXPIRES AT 345 PM CDT...

AT 344 PM...THE TORNADO PRODUCING THUNDERSTORMS OVER CENTRAL ZAPATA 
AND WEST CENTRAL HOGG COUNTIES HAVE WEAKENED. ACCORDINGLY...THE 
TORNADO WARNING FOR THESE COUNTIES HAVE EXPIRED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING
FOR DEEP SOUTH TEXAS.

LAT...LON 2689 9890 2706 9884 2723 9942 2702 9950

$$

SPEECE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 4:32 AM CDTTornado WarningBROWillacy43 min
Jul 20, 5:24 AM CDTFlash Flood WarningBROHidalgo96 min
Jul 20, 7:02 AM CDTTornado WarningBROCameron43 min
Jul 20, 8:09 AM CDTTornado WarningBROHidalgo41 min
Jul 20, 8:44 AM CDTTornado WarningBROJim Hogg33 min
Jul 20, 10:01 AM CDTTornado WarningBROJim Hogg34 min
Jul 20, 11:40 AM CDTTornado WarningBROJim Hogg40 min
Jul 20, 11:43 AM CDTTornado WarningBROHidalgo47 min
Jul 20, 11:51 AM CDTTornado WarningBROBrooks30 min
Jul 20, 12:00 PM CDTTornado WarningBROKenedy30 min
Jul 20, 12:26 PM CDTFlash Flood WarningBROHidalgo4 hr
Jul 20, 12:34 PM CDTTornado WarningBROHidalgo26 min
Jul 20, 12:36 PM CDTTornado WarningBROJim Hogg33 min
Jul 20, 1:00 PM CDTFlash Flood WarningBROCameron3 hr
Jul 20, 1:08 PM CDTTornado WarningBROHidalgo40 min
Jul 20, 1:27 PM CDTTornado WarningBROZapata36 min
Jul 20, 1:52 PM CDTFlash Flood WarningBROStarr3 hr
Jul 20, 2:38 PM CDTFlash Flood WarningBROStarr3 hr
Jul 20, 4:02 PM CDTTornado WarningBROJim Hogg36 min
Jul 20, 4:57 PM CDTFlash Flood WarningBROBrooks, Jim Hogg63 min
Jul 20, 5:15 PM CDTTornado WarningBROJim Hogg15 min
Jul 20, 5:53 PM CDTFlash Flood WarningBROBrooks, Jim Hogg37 min
Jul 20, 6:50 PM CDTTornado WarningBROJim Hogg, Starr, Zapata25 min

Nearby

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