Alert archive / Texas / Tornado Warnings in 2011
Tornado Warning 10, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Apr 26, 2011, 11:28 PM CDT for 4 counties in Texas. It was in force for 47 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 26, 2011, 11:28 PM CDT (04:28 UTC)
- Expired
- Apr 27, 2011, 12:15 AM CDT
- In force
- 47 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
Counties Houston County, TX, Madison County, TX, Trinity County, TX, Walker County, TX
The radar
The Ft Hood radar (KGRK), 179 km from the middle of the area, began a volume at 04:31 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 26, 11:46 PM CDT | HAIL 1.75 | Lovelady, TX | BRIEF PERIOD OF GOLF BALL HAIL IN LOVELADY. PUBLIC REPORT TO SHERIFFS OFFICE. |
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 26, 9:42 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 4.5 hours before the alert went out and 226 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
- 2270 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 961 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 281 m²/s²
- 0-3 km storm-relative helicity
- 428 m²/s²
- Significant tornado parameter
- 5.6
- Supercell composite
- 23.5
The text
As transmitted, in the capitals the NWS used until 2016.
290
WFUS54 KHGX 270428
TORHGX
TXC225-313-455-471-270515-
/O.NEW.KHGX.TO.W.0010.110427T0428Z-110427T0515Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1128 PM CDT TUE APR 26 2011
THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHWESTERN HOUSTON COUNTY IN SOUTHEAST TEXAS...
NORTHEASTERN MADISON COUNTY IN SOUTHEAST TEXAS...
WESTERN TRINITY COUNTY IN SOUTHEAST TEXAS...
NORTHERN WALKER COUNTY IN SOUTHEAST TEXAS...
* UNTIL 1215 AM CDT
* AT 1122 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS TORNADO
WAS LOCATED 8 MILES WEST OF AUSTONIO... MOVING EAST AT 45 MPH.
* LOCATIONS IN THE TORNADO WARNING INCLUDE BUT ARE NOT LIMITED TO
AUSTONIU...LATEXO...LOVELADY 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 5 AM 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 3134 9544 3129 9532 3121 9528 3108 9529
3099 9533 3094 9542 3101 9560 3109 9591
3111 9591 3111 9578 3114 9578 3117 9574
3122 9575 3127 9573 3133 9566 3135 9558
TIME...MOT...LOC 0426Z 280DEG 44KT 3115 9572
$$1 follow-up statement
336
WWUS54 KHGX 270445
SVSHGX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1145 PM CDT TUE APR 26 2011
TXC313-270455-
/O.CAN.KHGX.TO.W.0010.000000T0000Z-110427T0515Z/
MADISON TX-
1145 PM CDT TUE APR 26 2011
...THE TORNADO WARNING FOR MADISON COUNTY IS CANCELLED...
TORNADOES AT NIGHT ARE ESPECIALLY DANGEROUS. DO NOT WAIT UNTIL YOU
SEE OR HEAR A TORNADO - TAKE COVER NOW!
&&
LAT...LON 3134 9544 3129 9532 3121 9528 3108 9529
3099 9533 3100 9557 3101 9560 3107 9563
3109 9569 3133 9566 3135 9558
TIME...MOT...LOC 0445Z 279DEG 40KT 3111 9547
$$
TXC225-455-471-270515-
/O.CON.KHGX.TO.W.0010.000000T0000Z-110427T0515Z/
HOUSTON TX-TRINITY TX-WALKER TX-
1145 PM CDT TUE APR 26 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT FOR
WALKER...TRINITY AND HOUSTON COUNTIES...
AT 1144 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR LOVELADY...OR 11
MILES SOUTHEAST OF AUSTONIO...MOVING EAST AT 45 MPH.
THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTIES.
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 5 AM CDT WEDNESDAY FOR THE WARNED
AREA.
&&
LAT...LON 3134 9544 3129 9532 3121 9528 3108 9529
3099 9533 3100 9557 3101 9560 3107 9563
3109 9569 3133 9566 3135 9558
TIME...MOT...LOC 0445Z 279DEG 40KT 3111 9547
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 10:03 PM CDT | Tornado Warning | HGX | Houston | 42 min |
| Apr 26, 10:43 PM CDT | Tornado Warning | HGX | Houston | 47 min |
| Apr 26, 11:15 PM CDT | Tornado Warning | HGX | Houston, Trinity | 45 min |
| Apr 26, 11:55 PM CDT | Tornado Warning | HGX | Houston, Polk, Trinity | 50 min |
| Apr 27, 12:07 AM CDT | Tornado Warning | HGX | Houston, Trinity | 38 min |
| Apr 27, 12:32 AM CDT | Tornado Warning | HGX | Houston, Trinity | 43 min |
| Apr 27, 12:55 AM CDT | Tornado Warning | HGX | Polk | 35 min |
| Apr 27, 4:22 AM CDT | Red Flag Warning | HGX | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more | 16 hr |
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.