Alert archive / Texas / Tornado Warnings in 2003

Tornado Warning 13, NWS Houston/Galveston, TX

June 12, 2003San Jacinto County, Walker County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Jun 12, 2003, 8:08 PM CDT for San Jacinto County, Walker County, Texas. It was in force for 52 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
Jun 12, 2003, 8:08 PM CDT (01:08 UTC)
Expired
Jun 12, 2003, 9:00 PM CDT
In force
52 min
Issued by
NWS Houston/Galveston, TX
Area
Counties, with a storm outline in the text

Counties San Jacinto County, TX, Walker County, TX

The radar

The Houston radar (KHGX), 145 km from the middle of the area, began a volume at 01:12 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
Jun 12, 8:00 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 1.1 hours before the alert went out and 210 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, Lake Charles Mun, LA at 00:00Z on 2003-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 634 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, Lake Charles Mun, LA at 00:00Z on 2003-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 158 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
634 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
925 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
158 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KHGX 130108
TORHOU
TXC407-471-130200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
810 PM CDT THU JUN 12 2003

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  WALKER COUNTY IN SOUTHEAST TEXAS
  SAN JACINTO COUNTY IN SOUTHEAST TEXAS

* UNTIL 900 PM CDT

* AT 802 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO 10 MILES NORTH OF OAKHURST...MOVING SOUTHEAST
  AT 30 MPH.

* LOCATIONS IN THE PATH OF THE TORNADO INCLUDE...
  OAKHURST
  POINT BLANK

MOVE TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON YOUR CAR
OR MOBILE HOME FOR A STRONG SHELTER NOW

PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 3087 9528 3090 9541 3058 9530 3061 9507
          3080 9518

$$

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 12, 7:18 PM CDTSevere Thunderstorm WarningHGXBrazos, Madison57 min
Jun 12, 7:39 PM CDTSevere Thunderstorm WarningHGXTrinity, Walker51 min
Jun 12, 7:42 PM CDTSevere Thunderstorm WarningHGXGrimes63 min
Jun 12, 7:45 PM CDTSevere Thunderstorm WarningHGXHouston30 min
Jun 12, 7:52 PM CDTSevere Thunderstorm WarningHGXPolk53 min
Jun 12, 7:58 PM CDTTornado WarningHGXTrinity47 min
Jun 12, 8:00 PM CDTTornado WarningHGXGrimes, Madison, Walker45 min
Jun 12, 8:19 PM CDTTornado WarningHGXPolk56 min
Jun 12, 8:46 PM CDTSevere Thunderstorm WarningHGXMontgomery44 min
Jun 12, 8:57 PM CDTSevere Thunderstorm WarningHGXSan Jacinto33 min
Jun 12, 9:14 PM CDTSevere Thunderstorm WarningHGXPolk46 min
Jun 12, 9:16 PM CDTSevere Thunderstorm WarningHGXLiberty44 min
Jun 12, 9:28 PM CDTSevere Thunderstorm WarningHGXMontgomery47 min
Jun 12, 9:41 PM CDTTornado WarningHGXMontgomery34 min
Jun 12, 9:58 PM CDTSevere Thunderstorm WarningHGXLiberty47 min
Jun 13, 3:20 PM CDTSevere Thunderstorm WarningHGXBrazos, Burleson40 min
Jun 13, 3:26 PM CDTTornado WarningHGXBrazos, Burleson49 min
Jun 13, 4:13 PM CDTTornado WarningHGXBrazos32 min
Jun 13, 4:28 PM CDTSevere Thunderstorm WarningHGXSan Jacinto, Walker32 min
Jun 13, 4:56 PM CDTSevere Thunderstorm WarningHGXGrimes49 min
Jun 13, 5:29 PM CDTSevere Thunderstorm WarningHGXPolk31 min
Jun 13, 5:30 PM CDTSevere Thunderstorm WarningHGXBurleson, Washington60 min
Jun 13, 5:49 PM CDTSevere Thunderstorm WarningHGXLiberty26 min
Jun 13, 6:09 PM CDTSevere Thunderstorm WarningHGXBrazos66 min
Jun 13, 6:10 PM CDTSevere Thunderstorm WarningHGXAustin, Colorado50 min
Jun 13, 6:26 PM CDTSevere Thunderstorm WarningHGXBurleson34 min
Jun 13, 6:26 PM CDTTornado WarningHGXWashington34 min
Jun 13, 6:48 PM CDTSevere Thunderstorm WarningHGXGrimes42 min
Jun 13, 6:55 PM CDTSevere Thunderstorm WarningHGXAustin, Waller65 min

Nearby

Tornado Warnings in Texas, 2003Every tornado warning in 2003Tornadoes 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.