Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 2, NWS Fort Worth, TX

April 10, 2011Parker County, Texas

NWS Fort Worth, TX issued this tornado warning at Apr 10, 2011, 9:47 PM CDT for Parker County, Texas. It was in force for 22 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: Apr 10, 2011, 9:47 PM CDT (02:47 UTC)
Expired: Apr 10, 2011, 10:09 PM CDT
In force: 22 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

County Parker County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 38 km from the middle of the area, began a volume at 02:50 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
Apr 10, 7:02 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 2.8 hours before the alert went out and 38 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

412 
WFUS54 KFWD 110247
TORFWD
TXC367-110330-
/O.NEW.KFWD.TO.W.0002.110411T0247Z-110411T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
947 PM CDT SUN APR 10 2011

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN PARKER COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 1030 PM CDT

* AT 948 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  DEVELOPING TORNADO 10 MILES SOUTHWEST OF ANNETTA SOUTH...MOVING
  NORTHEAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  ANNETTA...ANNETTA NORTH...ANNETTA SOUTH AND HUDSON OAKS AROUND 1000
  PM CDT...
  WILLOW PARK AND ALEDO AROUND 1005 PM CDT...
  SANCTUARY AROUND 1020 PM CDT...

THIS WILL IMPACT THE FOLLOWING INTERSTATES...
I-20 BETWEEN MILE MARKERS 404 AND 423...
I-30 NEAR MILE MARKER 1.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT MONDAY
MORNING FOR NORTHEASTERN TEXAS.

&&

LAT...LON 3296 9755 3269 9754 3257 9754 3256 9775
      3256 9785 3266 9795
TIME...MOT...LOC 0248Z 229DEG 35KT 3262 9778

$$


85/NH

3 follow-up statements

827 
WWUS54 KFWD 110256
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
956 PM CDT SUN APR 10 2011

TXC367-110330-
/O.CON.KFWD.TO.W.0002.000000T0000Z-110411T0330Z/
PARKER TX-
956 PM CDT SUN APR 10 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR
SOUTHEASTERN PARKER COUNTY...

AT 956 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
DEVELOPING TORNADO.  THIS TORNADO WAS LOCATED 5 MILES WEST OF ANNETTA
SOUTH...MOVING NORTHEAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  WILLOW PARK AND ALEDO AROUND 1005 PM CDT...
  SANCTUARY AROUND 1020 PM CDT...

THIS WILL IMPACT THE FOLLOWING INTERSTATES...
I-20 BETWEEN MILE MARKERS 405 AND 423...
I-30 NEAR MILE MARKER 1.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO TORNADOES...LARGE HAIL AND DAMAGING WINDS ARE LIKELY
WITH THIS STORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT MONDAY
MORNING FOR NORTHEASTERN TEXAS.

&&

LAT...LON 3290 9755 3289 9754 3286 9755 3286 9754
      3257 9754 3257 9772 3261 9779 3272 9784
      3296 9755
TIME...MOT...LOC 0256Z 229DEG 35KT 3267 9771

$$

677 
WWUS54 KFWD 110304
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1004 PM CDT SUN APR 10 2011

TXC367-110330-
/O.CON.KFWD.TO.W.0002.000000T0000Z-110411T0330Z/
PARKER TX-
1004 PM CDT SUN APR 10 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR EAST
CENTRAL PARKER COUNTY...

AT 1004 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
DEVELOPING TORNADO.  THIS TORNADO WAS LOCATED NEAR ANNETTA...MOVING
NORTHEAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  SANCTUARY AROUND 1020 PM CDT...

THIS WILL IMPACT THE FOLLOWING INTERSTATES...
I-20 BETWEEN MILE MARKERS 413 AND 423...
I-30 NEAR MILE MARKER 1.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO TORNADOES...LARGE HAIL AND DAMAGING WINDS ARE LIKELY
WITH THIS STORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT MONDAY
MORNING FOR NORTHEASTERN TEXAS.

&&

LAT...LON 3296 9755 3290 9755 3289 9754 3286 9755
      3285 9754 3264 9754 3267 9767 3274 9771
TIME...MOT...LOC 0304Z 229DEG 35KT 3272 9764

$$

071 
WWUS54 KFWD 110309
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1009 PM CDT SUN APR 10 2011

TXC367-110319-
/O.CAN.KFWD.TO.W.0002.000000T0000Z-110411T0330Z/
PARKER TX-
1009 PM CDT SUN APR 10 2011

...THE TORNADO WARNING FOR EAST CENTRAL PARKER COUNTY IS CANCELLED...

THIS WILL IMPACT THE FOLLOWING INTERSTATES...
I-20 BETWEEN MILE MARKERS 414 AND 423...
I-30 NEAR MILE MARKER 1.

AT 1009 PM CDT THE SEVERE THUNDERSTORM THAT PROMPTED THE TORNADO
WARNING WEAKENED AND WAS NO LONGER CAPABLE OF PRODUCING A TORNADO.
THE TORNADO WARNING WAS CANCELLED.

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE
STILL POSSIBLE FROM THE THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT MONDAY
MORNING FOR NORTHEASTERN TEXAS.

LAT...LON 3296 9755 3290 9755 3289 9754 3286 9755
      3285 9754 3264 9754 3267 9767 3274 9771
TIME...MOT...LOC 0309Z 229DEG 35KT 3275 9759

$$

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, 9:56 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, 1:15 AM CDT	Tornado Warning	FWD	Johnson	21 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, 2011 Every tornado warning in 2011 Tornadoes 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.