Alert archive / Texas / Tornado Warnings in 2011
Tornado Warning 25, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Nov 15, 2011, 2:05 PM CST for Montgomery County, San Jacinto County, Texas. It was in force for 40 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
- Nov 15, 2011, 2:05 PM CST (20:05 UTC)
- Expired
- Nov 15, 2011, 2:45 PM CST
- In force
- 40 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
Counties Montgomery County, TX, San Jacinto County, TX
The radar
The Houston radar (KHGX), 113 km from the middle of the area, began a volume at 20:07 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 |
|---|---|---|---|
| Nov 15, 2:21 PM CST | TORNADO | 9 Nw Cleveland, TX | FIRE MARSHALL AND PARAMEDICS WITNESSED FUNNEL TOUCHING THE GROUND TWO TIMES IN A PASTURE WITH SWIRLING DIRT AT THE GROUND. OCCURED NEAR THE INTERSECTION OF 1725 AND TONY TAP ROAD. LITTLE DAMAGE. TORNADO RATED EF0. |
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 |
|---|---|---|---|
| Nov 15, 8:57 AM CST | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.1 hours before the alert went out and 185 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
- 26 J/kg
- Mixed-layer CIN
- -395 J/kg
- Mixed-layer LCL
- 948 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
392
WFUS54 KHGX 152005
TORHGX
TXC339-407-152045-
/O.NEW.KHGX.TO.W.0025.111115T2005Z-111115T2045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
205 PM CST TUE NOV 15 2011
THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A
* TORNADO WARNING FOR...
EASTERN MONTGOMERY COUNTY IN SOUTHEAST TEXAS...
SAN JACINTO COUNTY IN SOUTHEAST TEXAS...
* UNTIL 245 PM CST
* AT 202 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS TORNADO
WAS LOCATED 18 MILES SOUTHWEST OF SHEPHERD... MOVING NORTH AT 25
MPH.
* LOCATIONS IN THE TORNADO WARNING INCLUDE BUT ARE NOT LIMITED TO
COLDSPRING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.
A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 4PM CST 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 3054 9488 3039 9507 3036 9516 3033 9515
3030 9519 3035 9535 3074 9522 3061 9501
3059 9503 3058 9503 3057 9494
TIME...MOT...LOC 2005Z 199DEG 21KT 3036 9525
$$2 follow-up statements
010
WWUS54 KHGX 152018
SVSHGX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
218 PM CST TUE NOV 15 2011
TXC339-152027-
/O.CAN.KHGX.TO.W.0025.000000T0000Z-111115T2045Z/
MONTGOMERY TX-
218 PM CST TUE NOV 15 2011
...THE TORNADO WARNING FOR MONTGOMERY COUNTY IS CANCELLED...
THE STORM THAT PROMPTED THE WARNING HAS WEAKED OR MOVED OUT OF THE
AREA.
&&
A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 4PM CST.
PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY AND ASK THEM TO RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE.
LAT...LON 3054 9488 3039 9507 3035 9517 3042 9532
3074 9522 3061 9501 3060 9503 3058 9503
3057 9494
TIME...MOT...LOC 2017Z 200DEG 23KT 3044 9521
$$
TXC407-152045-
/O.CON.KHGX.TO.W.0025.000000T0000Z-111115T2045Z/
SAN JACINTO TX-
218 PM CST TUE NOV 15 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CST FOR SAN
JACINTO COUNTY...
AT 216 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED 12 MILES SOUTHWEST OF
COLDSPRING...OR 10 MILES NORTHWEST OF CLEVELAND...MOVING NORTH AT 25
MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SHEPHERD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.
&&
A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 4PM CST.
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 3054 9488 3039 9507 3035 9517 3042 9532
3074 9522 3061 9501 3060 9503 3058 9503
3057 9494
TIME...MOT...LOC 2017Z 200DEG 23KT 3044 9521
$$650
WWUS54 KHGX 152027
SVSHGX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
227 PM CST TUE NOV 15 2011
TXC407-152045-
/O.CON.KHGX.TO.W.0025.000000T0000Z-111115T2045Z/
SAN JACINTO TX-
227 PM CST TUE NOV 15 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CST FOR SAN
JACINTO COUNTY...
AT 225 PM CST...LOCAL LAW ENFORCEMENT REPORTED A TORNADO. THIS
TORNADO HAS TOUCHED DOWN AT LEAST 2 TIMES ACROSS SOUTHEAST SAN
JACINTO COUNTY ALONG HIGHWAY 105 AND LEE TURNER ROAD. THIS TORNADO
WAS LOCATED 8 MILES SOUTHWEST OF COLDSPRING...OR 12 MILES NORTHWEST
OF CLEVELAND...MOVING NORTH AT 25 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SHEPHERD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE SAFEST PLACE TO BE DURING A TORNADO IS IN THE INTERIOR HALLWAY OR
A ROOM SUCH AS A CLOSET ON THE LOWEST LEVEL OF A STURDY BUILDING. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.
IF YOU ARE INSIDE A MOBILE HOME OR VEHICLE...EVACUATE THEM
IMMEDIATELY AND SEEK SHELTER INSIDE A STURDY BUILDING. AS A LAST
RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR
HEAD WITH YOUR HANDS.
&&
A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 4PM CST.
PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY AND ASK THEM TO RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE.
LAT...LON 3054 9488 3039 9507 3035 9517 3042 9532
3074 9522 3061 9501 3060 9503 3058 9503
3057 9494
TIME...MOT...LOC 2026Z 201DEG 23KT 3049 9518
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 15, 1:33 PM CST | Severe Thunderstorm Warning | HGX | Harris | 27 min |
| Nov 15, 1:44 PM CST | Severe Thunderstorm Warning | HGX | Montgomery, Walker | 46 min |
| Nov 15, 2:02 PM CST | Special Weather Statement | HGX | Brazos, Burleson | 58 min |
| Nov 15, 2:16 PM CST | Severe Thunderstorm Warning | HGX | Harris, Montgomery | 29 min |
| Nov 15, 2:42 PM CST | Tornado Warning | HGX | Polk, San Jacinto, Trinity | 48 min |
| Nov 15, 3:27 PM CST | Special Marine Warning | HGX | 33 min | |
| Nov 15, 3:31 PM CST | Special Weather Statement | HGX | Chambers | 29 min |
| Nov 15, 3:45 PM CST | Special Weather Statement | HGX | Chambers | 60 min |
| Nov 15, 4:22 PM CST | Special Weather Statement | HGX | Polk | 53 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.