Alert archive / Texas / Tornado Warnings in 2011
Tornado Warning 3, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Apr 25, 2011, 9:11 PM CDT for Houston County, Trinity County, Texas. It was in force for 64 min. 1 report 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, 9:11 PM CDT (02:11 UTC)
- Expired
- Apr 25, 2011, 10:15 PM CDT
- In force
- 64 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
Counties Houston County, TX, Trinity County, TX
The radar
The Shreveport radar (KSHV), 163 km from the middle of the area, began a volume at 02:14 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, 9:37 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, 2.2 hours before the alert went out and 171 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.
586
WFUS54 KHGX 260211
TORHGX
TXC225-455-260315-
/O.NEW.KHGX.TO.W.0003.110426T0211Z-110426T0315Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
911 PM CDT MON APR 25 2011
THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN HOUSTON COUNTY IN SOUTHEAST TEXAS...
NORTHEASTERN TRINITY COUNTY IN SOUTHEAST TEXAS...
* UNTIL 1015 PM CDT
* AT 910 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
TORNADO WAS LOCATED NEAR KENNARD... MOVING EAST AT 30 MPH. THIS
STORM HAS A RECENT HISTORY OF PRODUCING QUARTER SIZED HAIL
AROUND GRAPELAND.
* LOCATIONS IN THE TORNADO WARNING INCLUDE BUT ARE NOT LIMITED TO
WECHES AND APPLE SPRINGS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE SAFEST PLACE TO BE DURING A TORNADO IS IN THE INTERIOR HALLWAY OR
A ROOM SUCH AS A CLOSET ON THE LOWEST LEVEL OF A STURDY BUILDING. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.
IF YOU ARE INSIDE A MOBILE HOME OR VEHICLE...EVACUATE THEM
IMMEDIATELY AND SEEK SHELTER INSIDE A STURDY BUILDING. AS A LAST
RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR
HEAD WITH YOUR HANDS.
&&
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 3158 9524 3159 9517 3158 9514 3152 9509
3148 9510 3145 9501 3140 9495 3135 9495
3133 9490 3125 9487 3120 9495 3136 9538
3160 9533 3160 9527
TIME...MOT...LOC 0211Z 292DEG 26KT 3140 9523
$$The 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, 9:18 PM CDT | Tornado Warning | HGX | Houston, Trinity | 42 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.