Alert archive / Texas / Tornado Warnings in 2011
Tornado Warning 19, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Nov 8, 2011, 2:01 PM CST for Harris County, Liberty County, Texas. It was in force for 44 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
- Nov 8, 2011, 2:01 PM CST (20:01 UTC)
- Expired
- Nov 8, 2011, 2:45 PM CST
- In force
- 44 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
Counties Harris County, TX, Liberty County, TX
The radar
The Houston radar (KHGX), 84 km from the middle of the area, began a volume at 20:02 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Nov 8, 1:59 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.0 hours before the alert went out and 169 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
- 403 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 438 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
944
WFUS54 KHGX 082001
TORHGX
TXC201-291-082045-
/O.NEW.KHGX.TO.W.0019.111108T2001Z-111108T2045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
201 PM CST TUE NOV 8 2011
THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN HARRIS COUNTY IN SOUTHEAST TEXAS...
NORTHERN LIBERTY COUNTY IN SOUTHEAST TEXAS...
* UNTIL 245 PM CST
* AT 157 PM CST...DOPPLER RADAR OBSERVED A TORNADO. THIS TORNADO WAS
LOCATED 6 MILES SOUTH OF PLUM GROVE...MOVING NORTHEAST AT 20 MPH.
* LOCATIONS IN THE TORNADO WARNING INCLUDE BUT ARE NOT LIMITED TO
TARKINGTON PRAIRIE...MOSS HILL...LIBERTY...KENEFICK...HARDIN...
DAYTON LAKES...DAYTON AND DAISETTA.
A TORNADO WAS SIGHTED EARLIER NEAR ATASCOCITA WITH THIS STORM.
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 3003 9507 3009 9517 3013 9515 3017 9509
3021 9511 3032 9507 3049 9473 3047 9471
3045 9472 3005 9459
TIME...MOT...LOC 2000Z 235DEG 19KT 3012 9508
$$1 follow-up statement
022
WWUS54 KHGX 082025
SVSHGX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
225 PM CST TUE NOV 8 2011
TXC201-082035-
/O.CAN.KHGX.TO.W.0019.000000T0000Z-111108T2045Z/
HARRIS TX-
225 PM CST TUE NOV 8 2011
...THE TORNADO WARNING FOR HARRIS COUNTY IS CANCELLED...
THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY AND ASK THEM TO RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE.
LAT...LON 3007 9494 3011 9499 3015 9502 3018 9502
3022 9499 3026 9495 3048 9475 3047 9471
3045 9472 3005 9459
TIME...MOT...LOC 2025Z 246DEG 18KT 3015 9494
$$
TXC291-082045-
/O.CON.KHGX.TO.W.0019.000000T0000Z-111108T2045Z/
LIBERTY TX-
225 PM CST TUE NOV 8 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CST FOR LIBERTY
COUNTY...
AT 222 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED 6 MILES NORTHWEST OF
KENEFICK...OR 8 MILES NORTHWEST OF DAYTON...MOVING NORTHEAST AT 25
MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DAYTON
LAKES...MOSS HILL...HARDIN AND DAISETTA.
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 3007 9494 3011 9499 3015 9502 3018 9502
3022 9499 3026 9495 3048 9475 3047 9471
3045 9472 3005 9459
TIME...MOT...LOC 2025Z 246DEG 18KT 3015 9494
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 8, 1:21 PM CST | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery | 39 min |
| Nov 8, 1:22 PM CST | Tornado Warning | HGX | Harris, Liberty, Montgomery | 38 min |
| Nov 8, 2:43 PM CST | Tornado Warning | HGX | Liberty | 47 min |
| Nov 8, 3:42 PM CST | Special Weather Statement | HGX | Montgomery | 63 min |
| Nov 8, 3:43 PM CST | Special Weather Statement | HGX | Trinity | 62 min |
| Nov 8, 4:20 PM CST | Special Weather Statement | HGX | Liberty | 55 min |
| Nov 8, 4:29 PM CST | Tornado Warning | HGX | Liberty, Montgomery, San Jacinto | 46 min |
| Nov 8, 4:32 PM CST | Small Craft Advisory | HGX | 46 hr | |
| Nov 8, 4:35 PM CST | Tornado Warning | HGX | Liberty | 40 min |
| Nov 8, 5:11 PM CST | Tornado Warning | HGX | Liberty, Montgomery | 64 min |
| Nov 8, 5:26 PM CST | Special Weather Statement | HGX | Chambers | 49 min |
| Nov 8, 5:58 PM CST | Special Marine Warning | HGX | 92 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.