Alert archive / Texas / Tornado Warnings in 2011
Tornado Warning 4, NWS Fort Worth, TX
NWS Fort Worth, TX issued this tornado warning at Apr 11, 2011, 1:15 AM CDT for Johnson County, Texas. It was in force for 21 min. 7 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 11, 2011, 1:15 AM CDT (06:15 UTC)
- Expired
- Apr 11, 2011, 1:36 AM CDT
- In force
- 21 min
- Issued by
- NWS Fort Worth, TX
- Area
- Storm-based polygon
County Johnson County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 22 km from the middle of the area, began a volume at 06:17 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 11, 1:22 AM CDT | TORNADO | Alvarado, TX | AN EF1 TORNADO WAS CONFIRMED IN ALVARADO BY A NWS STORM SURVEY. A MOBILE HOME WAS OVERTURNED RESULTING IN TWO MINOR INJURIES. THE EQUINE VET BUILDING WAS DAMAGED AND FOUR OTHER COMMERCIAL BUILDINGS WERE DAMAGED. THIS TORNADO WAS APPROXIMATELY 200 YARDS LONG, 1 |
| Apr 11, 1:23 AM CDT | TSTM WND DMG | Alvarado, TX | STRAIGHT LINE WINDS RESULTED IN THE COLLAPSE OF A WALL OF THE MEDICINE CHEST PHARMACY NEAR NORTH CUMMINGS DR AND HIGHWAY 67. SIGN AND POWER POLE DAMAGE WAS ALSO NOTED IN THE SAME AREA. |
| Apr 11, 1:26 AM CDT | TSTM WND DMG | 8 Se Cleburne, TX | 67 MPH WINDS AND POWER OUTAGES IN SAND |
| Apr 11, 1:30 AM CDT | TSTM WND DMG | 2 Nnw Venus, TX | TWO MOBILE HOMES AND AND ONE SINGLE FAMILY HOME WITH ROOF DAMAGE. |
| Apr 11, 1:32 AM CDT | TSTM WND DMG | 3 Sse Venus, TX | TWO MOBILE HOMES DAMAGE AND 3 SINGLE FAMILY RESIDENCES SUSTAINED ROOF DAMAGE. |
| Apr 11, 1:35 AM CDT | TSTM WND DMG | 4 Ne Alvarado, TX | 6-12 INCH DIAMETER LIMBS DOWN NEAR FM 2738 AND HWY 67 |
| Apr 11, 1:36 AM CDT | TSTM WND GST 82 | Alvarado, TX | ALVARADO - MEASURED FROM SCHOOL SITE |
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 10, 7:02 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 6.3 hours before the alert went out and 49 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
- 637 J/kg
- Mixed-layer CIN
- -268 J/kg
- Mixed-layer LCL
- 1994 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 150 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
875
WFUS54 KFWD 110615
TORFWD
TXC251-110645-
/O.NEW.KFWD.TO.W.0004.110411T0615Z-110411T0645Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
115 AM CDT MON APR 11 2011
THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A
* TORNADO WARNING FOR...
EASTERN JOHNSON COUNTY IN NORTH CENTRAL TEXAS...
* UNTIL 145 AM CDT
* AT 115 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
DEVELOPING TORNADO 9 MILES SOUTH OF KEENE...MOVING NORTHEAST AT 50
MPH.
* THE TORNADO WILL BE NEAR...
KEENE AROUND 120 AM CDT...
ALVARADO AROUND 125 AM CDT...
VENUS AROUND 130 AM CDT...
THIS WILL IMPACT I-35W BETWEEN MILE MARKERS 17 AND 32.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO AN INTERIOR BATHROOM...CLOSET...OR HALLWAY ON THE LOWEST
FLOOR OF YOUR BUILDING. COVER YOURSELF WITH BLANKETS...PILLOWS...OR A
MATTRESS FOR PROTECTION.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CDT MONDAY MORNING FOR
EASTERN TEXAS. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT
UNTIL 500 AM CDT MONDAY MORNING FOR NORTHEASTERN TEXAS.
&&
LAT...LON 3255 9709 3234 9709 3230 9709 3222 9737
3244 9743
TIME...MOT...LOC 0615Z 236DEG 45KT 3229 9730
$$
85/NH2 follow-up statements
899
WWUS54 KFWD 110625
SVSFWD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
125 AM CDT MON APR 11 2011
TXC251-110645-
/O.CON.KFWD.TO.W.0004.000000T0000Z-110411T0645Z/
JOHNSON TX-
125 AM CDT MON APR 11 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR EASTERN
JOHNSON COUNTY...
AT 125 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
DEVELOPING TORNADO. THIS TORNADO WAS LOCATED 5 MILES SOUTH OF
ALVARADO...MOVING NORTHEAST AT 50 MPH.
THE TORNADO WILL BE NEAR...
VENUS AROUND 130 AM CDT...
THIS WILL IMPACT I-35W BETWEEN MILE MARKERS 17 AND 32.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO TORNADOES...DAMAGING WINDS ARE LIKELY
WITH THIS STORM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CDT MONDAY MORNING FOR
EASTERN TEXAS.
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 500 AM CDT
MONDAY MORNING FOR NORTHEASTERN TEXAS.
&&
LAT...LON 3255 9709 3234 9709 3230 9709 3226 9724
3246 9735
TIME...MOT...LOC 0625Z 236DEG 45KT 3236 9717
$$974
WWUS54 KFWD 110636
SVSFWD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
136 AM CDT MON APR 11 2011
TXC251-110646-
/O.CAN.KFWD.TO.W.0004.000000T0000Z-110411T0645Z/
JOHNSON TX-
136 AM CDT MON APR 11 2011
...THE TORNADO WARNING FOR EASTERN JOHNSON COUNTY IS CANCELLED...
THIS WILL IMPACT I-35W BETWEEN MILE MARKERS 17 AND 32.
AT 136 AM CDT THE SEVERE THUNDERSTORM THAT PROMPTED THE TORNADO
WARNING HAS EXITED THE AREA...THUS THE WARNING WAS CANCELLED. A NEW
TORNADO WARNING FOR ELLIS COUNTY HAS BEEN ISSUED.
RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE
STILL POSSIBLE FROM THE THUNDERSTORM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CDT MONDAY MORNING FOR
EASTERN TEXAS.
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 500 AM CDT
MONDAY MORNING FOR NORTHEASTERN TEXAS.
LAT...LON 3255 9709 3234 9709 3230 9709 3226 9724
3246 9735
TIME...MOT...LOC 0636Z 236DEG 45KT 3243 9703
$$The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 7:05 PM CDT | Special Weather Statement | FWD | Palo Pinto | 25 min |
| Apr 10, 7:17 PM CDT | Special Weather Statement | FWD | Montague | 28 min |
| Apr 10, 7:31 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Palo Pinto, Parker | 59 min |
| Apr 10, 7:42 PM CDT | Special Weather Statement | FWD | Cooke, Montague | 33 min |
| Apr 10, 7:48 PM CDT | Severe Thunderstorm Warning | FWD | Eastland | 57 min |
| Apr 10, 8:13 PM CDT | Special Weather Statement | FWD | Cooke | 32 min |
| Apr 10, 8:18 PM CDT | Special Weather Statement | FWD | Wise | 27 min |
| Apr 10, 8:32 PM CDT | Special Weather Statement | FWD | Wise | 28 min |
| Apr 10, 8:49 PM CDT | Special Weather Statement | FWD | Eastland, Palo Pinto | 26 min |
| Apr 10, 9:09 PM CDT | Special Weather Statement | FWD | Palo Pinto | 36 min |
| Apr 10, 9:25 PM CDT | Severe Thunderstorm Warning | FWD | Erath, Hood, Palo Pinto, Parker | 44 min |
| Apr 10, 9:32 PM CDT | Severe Thunderstorm Warning | FWD | Comanche, Eastland | 46 min |
| Apr 10, 9:38 PM CDT | Special Weather Statement | FWD | Jack | 37 min |
| Apr 10, 9:47 PM CDT | Tornado Warning | FWD | Parker | 22 min |
| Apr 10, 9:56 PM CDT | Special Weather Statement | FWD | Montague | 34 min |
| Apr 10, 9:59 PM CDT | Severe Thunderstorm Warning | FWD | Parker, Tarrant | 35 min |
| Apr 10, 10:09 PM CDT | Special Weather Statement | FWD | Erath | 36 min |
| Apr 10, 10:16 PM CDT | Severe Thunderstorm Warning | FWD | Montague | 59 min |
| Apr 10, 10:20 PM CDT | Severe Thunderstorm Warning | FWD | Erath | 34 min |
| Apr 10, 10:45 PM CDT | Special Weather Statement | FWD | Grayson | 30 min |
| Apr 10, 11:04 PM CDT | Special Weather Statement | FWD | Eastland | 26 min |
| Apr 10, 11:17 PM CDT | Special Weather Statement | FWD | Denton, Parker, Wise | 28 min |
| Apr 10, 11:22 PM CDT | Severe Thunderstorm Warning | FWD | Mills | 68 min |
| Apr 10, 11:52 PM CDT | Severe Thunderstorm Warning | FWD | Comanche, Coryell, Hamilton, Lampasas, Mills | 53 min |
| Apr 10, 11:53 PM CDT | Severe Thunderstorm Warning | FWD | Dallas, Denton, Tarrant | 37 min |
| Apr 11, 12:05 AM CDT | Severe Thunderstorm Warning | FWD | Grayson | 39 min |
| Apr 11, 12:23 AM CDT | Severe Thunderstorm Warning | FWD | Collin, Denton | 52 min |
| Apr 11, 12:25 AM CDT | Tornado Warning | FWD | Hamilton | 20 min |
| Apr 11, 12:28 AM CDT | Severe Thunderstorm Warning | FWD | Bosque, Coryell, Hamilton | 62 min |
| Apr 11, 12:41 AM CDT | Severe Thunderstorm Warning | FWD | Parker, Tarrant | 64 min |
| Apr 11, 12:47 AM CDT | Severe Thunderstorm Warning | FWD | Fannin, Grayson | 58 min |
| Apr 11, 12:49 AM CDT | Severe Thunderstorm Warning | FWD | Hood, Johnson, Somervell | 41 min |
| Apr 11, 12:55 AM CDT | Severe Thunderstorm Warning | FWD | Hill | 35 min |
| Apr 11, 1:23 AM CDT | Severe Thunderstorm Warning | FWD | Ellis, Hill, Johnson, Navarro | 51 min |
| Apr 11, 1:34 AM CDT | Severe Thunderstorm Warning | FWD | Dallas | 43 min |
| Apr 11, 1:35 AM CDT | Tornado Warning | FWD | Ellis | 25 min |
| Apr 11, 1:53 AM CDT | Severe Thunderstorm Warning | FWD | Henderson, Kaufman | 52 min |
| Apr 11, 2:01 AM CDT | Tornado Warning | FWD | Dallas, Kaufman | 30 min |
| Apr 11, 2:13 AM CDT | Tornado Warning | FWD | Hunt, Kaufman, Rockwall | 35 min |
| Apr 11, 2:19 AM CDT | Severe Thunderstorm Warning | FWD | Rains, Van Zandt | 56 min |
| Apr 11, 2:38 AM CDT | Severe Thunderstorm Warning | FWD | Delta, Hopkins, Hunt | 52 min |
| Apr 11, 2:59 AM CDT | Special Weather Statement | FWD | Navarro | 31 min |
| Apr 11, 3:27 AM CDT | Special Weather Statement | FWD | Henderson | 33 min |
| Apr 11, 4:07 AM CDT | Special Weather Statement | FWD | Henderson | 23 min |
| Apr 11, 4:14 AM CDT | Special Weather Statement | FWD | Falls | 31 min |
| Apr 11, 5:05 AM CDT | Special Weather Statement | FWD | Milam | 25 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.