Alert archive / Texas / Tornado Warnings in 2011
Tornado Warning 4, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Apr 25, 2011, 9:18 PM CDT for Houston County, Trinity County, Texas. It was in force for 42 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 25, 2011, 9:18 PM CDT (02:18 UTC)
- Expired
- Apr 25, 2011, 10:00 PM CDT
- In force
- 42 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
Counties Houston County, TX, Trinity County, TX
The radar
The Shreveport radar (KSHV), 175 km from the middle of the area, began a volume at 02:19 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 25, 9:18 PM CDT | TSTM WND DMG | 1 Wnw Crockett, TX | 2 MOBILE HOMES DAMAGED ONE SEVERELY. NO ONE INJURED. TIME ESTIMATED. |
| Apr 25, 9:20 PM CDT | HAIL 1 | Latexo, TX | |
| Apr 25, 9:37 PM CDT | TSTM WND DMG | 8 Ne Crockett, TX | TREES DOWN AND BLOCKING HIGHWAY 21 EAST. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 25, 2:41 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 2.3 hours before the alert went out and 184 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.
- Mixed-layer CAPE
- 782 J/kg
- Mixed-layer CIN
- -155 J/kg
- Mixed-layer LCL
- 1445 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 262 m²/s²
- 0-3 km storm-relative helicity
- 553 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 15.0
The text
As transmitted, in the capitals the NWS used until 2016.
625
WFUS54 KHGX 260218
TORHGX
TXC225-455-260300-
/O.NEW.KHGX.TO.W.0004.110426T0218Z-110426T0300Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
918 PM CDT MON APR 25 2011
THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A
* TORNADO WARNING FOR...
CENTRAL HOUSTON COUNTY IN SOUTHEAST TEXAS...
NORTHEASTERN TRINITY COUNTY IN SOUTHEAST TEXAS...
* UNTIL 1000 PM CDT
* AT 914 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS TORNADO
WAS LOCATED NEAR LATEXO... MOVING SOUTHEAST AT 40 MPH.
* LOCATIONS IN THE TORNADO WARNING INCLUDE BUT ARE NOT LIMITED TO
PENNINGTON...APPLE SPRINGS...KENNARD AND CROCKETT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORNADOES AT NIGHT ARE ESPECIALLY DANGEROUS. DO NOT WAIT UNTIL YOU
SEE OR HEAR A TORNADO - TAKE COVER NOW!
A TORNADO WATCH IS IN EFFECT UNTIL 10 PM FOR THE WARNED AREA.
&&
PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY AND ASK THEM TO RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE.
LAT...LON 3132 9496 3124 9485 3117 9482 3105 9496
3133 9555 3149 9545
TIME...MOT...LOC 0218Z 297DEG 41KT 3136 9540
$$2 follow-up statements
186
WWUS54 KHGX 260231
SVSHGX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
931 PM CDT MON APR 25 2011
TXC225-455-260300-
/O.CON.KHGX.TO.W.0004.000000T0000Z-110426T0300Z/
HOUSTON TX-TRINITY TX-
931 PM CDT MON APR 25 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR TRINITY
AND HOUSTON COUNTIES...
AT 925 PM CDT...HOUSTON COUNTY LAW ENFORCEMENT HAD RECEIVED REPORTS
OF 3 TORNADOES. 1 SOUTH OF LATEXO...ANOTHER WEST OF CROCKETT.
NUMEROUS HOUSES DAMAGED NEAR CROCKETT. AT 928 PM THE TORNADO
PRODUCING STORMS WERE 3 MILES EAST OF CROCKETT AND 4 MILES NORTH OF
KENNARD MOVING EAST SOUTHEAST AT 40 MPH.
SEEK SHELTER IMMEDIATELY IF YOU ARE NEAR KENNARD OR IN SOUTHEAST
HOUSTON COUNTY OR NORTHERN TRINITY COUNTY.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
PENNINGTON AND APPLE SPRINGS
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING
FOR SOUTHEAST TEXAS.
&&
LAT...LON 3132 9496 3124 9485 3117 9482 3105 9496
3133 9555 3149 9545
TIME...MOT...LOC 0228Z 294DEG 39KT 3133 9529
$$
KP655
WWUS54 KHGX 260250
SVSHGX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
950 PM CDT MON APR 25 2011
TXC225-455-260300-
/O.CON.KHGX.TO.W.0004.000000T0000Z-110426T0300Z/
HOUSTON TX-TRINITY TX-
950 PM CDT MON APR 25 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR TRINITY
AND HOUSTON COUNTIES...
AT 944 PM CDT...RADAR INDICATED A POSSIBLE TORNADO 6 MILES NORTHWEST
OF APPLE SPRINGS...MOVING SOUTHEAST AT 45 MPH. IN ADDITION VERY
STRONG WINDS MAY ACCOMPANY THE WHOLE STORM. A SPOTTER REPORTED TREES
BLOWN DOWN ON HIGHWAY 21. THIS STORM HAS A HISTORY OF MULTIPLE
TORNADOES.
SEEK SHELTER IMMEDIATELY IF YOU ARE IN NORTHEASTERN TRINITY OR
EASTERN HOUSTON COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT MONDAY EVENING
FOR SOUTHEAST TEXAS.
&&
LAT...LON 3132 9496 3124 9485 3117 9482 3105 9496
3133 9555 3149 9545
TIME...MOT...LOC 0247Z 294DEG 39KT 3124 9507
$$
KPThe office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 7:46 PM CDT | Tornado Warning | HGX | Houston | 44 min |
| Apr 25, 8:27 PM CDT | Tornado Warning | HGX | Houston | 48 min |
| Apr 25, 9:08 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 37 min |
| Apr 25, 9:11 PM CDT | Tornado Warning | HGX | Houston, Trinity | 64 min |
| Apr 25, 10:11 PM CDT | Severe Thunderstorm Warning | HGX | Polk, Trinity | 49 min |
| Apr 25, 10:30 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 45 min |
| Apr 25, 11:00 PM CDT | Special Weather Statement | HGX | Houston, Madison, Trinity | 90 min |
| Apr 25, 11:09 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Madison, Polk, San Jacinto, Trinity, Walker | 51 min |
| Apr 25, 11:16 PM CDT | Severe Thunderstorm Warning | HGX | Polk, Trinity | 44 min |
| Apr 25, 11:33 PM CDT | Tornado Warning | HGX | Polk, San Jacinto, Trinity | 27 min |
| Apr 25, 11:56 PM CDT | Tornado Warning | HGX | Polk, Trinity | 64 min |
| Apr 25, 11:59 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Polk, San Jacinto, Trinity, Walker | 61 min |
| Apr 26, 12:56 AM CDT | Severe Thunderstorm Warning | HGX | Montgomery, San Jacinto, Walker | 49 min |
| Apr 26, 1:00 AM CDT | Severe Thunderstorm Warning | HGX | Liberty, Polk, San Jacinto | 60 min |
| Apr 26, 1:43 AM CDT | Severe Thunderstorm Warning | HGX | Liberty, Montgomery, Polk, San Jacinto | 47 min |
| Apr 26, 2:54 AM CDT | Special Weather Statement | HGX | Liberty | 66 min |
| Apr 26, 10:52 AM CDT | Small Craft Advisory | HGX | 22 hr | |
| Apr 26, 4:23 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 52 min |
| Apr 26, 5:11 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 49 min |
| Apr 26, 5:27 PM CDT | Special Weather Statement | HGX | Madison | 33 min |
| Apr 26, 5:58 PM CDT | Special Weather Statement | HGX | Houston | 32 min |
Nearby
Tornado Warnings in Texas, 2011Every tornado warning in 2011Tornadoes in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.