Alert archive / Texas / Tornado Warnings in 2006

Tornado Warning 13, NWS Houston/Galveston, TX

April 29, 2006Liberty County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Apr 29, 2006, 8:10 AM CDT for Liberty County, Texas. It was in force for 50 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
Apr 29, 2006, 8:10 AM CDT (13:10 UTC)
Expired
Apr 29, 2006, 9:00 AM CDT
In force
50 min
Issued by
NWS Houston/Galveston, TX
Area
Counties, with a storm outline in the text

County Liberty County, TX

The radar

The Houston radar (KHGX), 86 km from the middle of the area, began a volume at 13:12 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
Apr 29, 6:04 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 1.2 hours before the alert went out and 166 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 12:00Z on 2006-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 726 joules per kilogram.LCLLFCEL10008507005003002001001 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, Lake Charles Mun, LA at 12:00Z on 2006-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 308 square meters per square second.1939587897Sfc1 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
726 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
547 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
308 m²/s²
0-3 km storm-relative helicity
470 m²/s²
Significant tornado parameter
1.7
Supercell composite
8.4

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KHGX 291310
TORHGX
TXC291-291400-
/O.NEW.KHGX.TO.W.0013.060429T1310Z-060429T1400Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
810 AM CDT SAT APR 29 2006

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  LIBERTY COUNTY IN SOUTHEAST TEXAS

* UNTIL 900 AM CDT

* AT 807 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS TORNADO
  WAS LOCATED 14 MILES NORTHWEST OF DAISETTA...MOVING NORTHEAST AT 35
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  CENTRAL LIBERTY COUNTY...
  NORTHERN LIBERTY COUNTY...
  MOSS HILL...
  ROMAYOR...

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 3032 9512 2993 9501 3011 9461 3047 9476

$$
2 follow-up statements
000 
WWUS54 KHGX 291329
SVSHGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
828 AM CDT SAT APR 29 2006

TXC291-291400-
/O.CON.KHGX.TO.W.0013.000000T0000Z-060429T1400Z/
LIBERTY TX-
828 AM CDT SAT APR 29 2006

...A TORNADO WARNING CONTINUES FOR LIBERTY COUNTY UNTIL 900 AM CDT...

AT 823 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
TORNADO.  THIS TORNADO WAS LOCATED 5 MILES SOUTHWEST OF 
THICKET...MOVING NORTHEAST AT 35 MPH. ANOTHER POSSIBLE TORNADO WAS 
LOCATED NEAR MOSS HILL...ALSO MOVING NORTHEAST AT 35 MPH.

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 3032 9512 2993 9501 3011 9461 3047 9473

$$
000 
WWUS54 KHGX 291400
SVSHGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
900 AM CDT SAT APR 29 2006

TXC291-291410-
/O.EXP.KHGX.TO.W.0013.000000T0000Z-060429T1400Z/
LIBERTY TX-
900 AM CDT SAT APR 29 2006

...THE TORNADO WARNING FOR LIBERTY COUNTY HAS BEEN ALLOWED TO
EXPIRE...

THE THUNDERSTORM WHICH PROMPTED THE TORNADO WARNING HAS WEAKENED AND
IS NO LONGER EXPECTED TO POSE AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1 PM CDT FOR LIBERTY COUNTY.

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 3032 9512 2993 9501 3011 9461 3047 9473

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 4:26 AM CDTSevere Thunderstorm WarningHGXBrazos, Burleson34 min
Apr 29, 5:44 AM CDTTornado WarningHGXMontgomery, San Jacinto46 min
Apr 29, 6:29 AM CDTTornado WarningHGXLiberty, Montgomery, Polk, San Jacinto46 min
Apr 29, 7:16 AM CDTTornado WarningHGXPolk29 min
Apr 29, 8:24 AM CDTTornado WarningHGXHarris51 min
Apr 29, 9:08 AM CDTTornado WarningHGXChambers, Harris67 min
Apr 29, 9:43 AM CDTTornado WarningHGXLiberty62 min
Apr 29, 10:29 AM CDTSpecial Marine WarningHGX91 min
Apr 29, 11:22 AM CDTTornado WarningHGXChambers53 min
Apr 29, 11:43 AM CDTSpecial Marine WarningHGX92 min

Nearby

Tornado Warnings in Texas, 2006Every tornado warning in 2006Tornadoes in 2006

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.