Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 91, NWS Fort Worth, TX

May 24, 2011Cooke County, Grayson County, Texas

NWS Fort Worth, TX issued this tornado warning at May 24, 2011, 7:33 PM CDT for Cooke County, Grayson County, Texas. It was in force for 42 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: May 24, 2011, 7:33 PM CDT (00:33 UTC)
Expired: May 24, 2011, 8:15 PM CDT
In force: 42 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Cooke County, TX, Grayson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 138 km from the middle of the area, began a volume at 00:34 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
May 24, 12:47 PM CDT	Tornado Watch PDS	SPC	11 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.6 hours before the alert went out and 111 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: 2867 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1457 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 357 m²/s²
0-3 km storm-relative helicity: 602 m²/s²
Significant tornado parameter: 6.2
Supercell composite: 44.3

Open this sounding in Storm Lab

The text

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

639 
WFUS54 KFWD 250033
TORFWD
TXC097-181-250115-
/O.NEW.KFWD.TO.W.0091.110525T0033Z-110525T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
733 PM CDT TUE MAY 24 2011

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN COOKE COUNTY IN NORTH CENTRAL TEXAS...
  WESTERN GRAYSON COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 815 PM CDT

* AT 733 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  DEVELOPING TORNADO 5 MILES WEST OF VALLEY VIEW...MOVING EAST AT 
45   MPH.  THIS DANGEROUS STORM IS ALSO CAPABLE OF PRODUCING 
BASEBALL SIZED HAIL.

* THE TORNADO WILL BE NEAR...
  GAINESVILLE AROUND 740 PM CDT...
  CALLISBURG AROUND 750 PM CDT...
  COLLINSVILLE AND TIOGA AROUND 755 PM CDT...
  WHITESBORO AROUND 800 PM CDT...
  SADLER AROUND 805 PM CDT...
  SOUTHMAYD AND DORCHESTER AROUND 810 PM CDT...

THIS WILL IMPACT I-35 BETWEEN MILE MARKERS 485 AND 503.

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.

EVACUATE MOBILE HOMES FOR A STORM SHELTER OR PERMANENT BUILDING. IF
NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH AND COVER
YOUR HEAD.

&&

LAT...LON 3385 9662 3383 9659 3347 9660 3344 9734
      3377 9724 3378 9718 3373 9716 3372 9711
      3375 9709 3380 9710 3385 9677 3383 9676
      3383 9673 3387 9669 3388 9659
TIME...MOT...LOC 0033Z 252DEG 39KT 3351 9721

$$


CAVANAUGH

1 follow-up statement

740 
WWUS54 KFWD 250100
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
800 PM CDT TUE MAY 24 2011

TXC097-181-250115-
/O.CON.KFWD.TO.W.0091.000000T0000Z-110525T0115Z/
GRAYSON TX-COOKE TX-
800 PM CDT TUE MAY 24 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR EAST
CENTRAL COOKE AND WESTERN GRAYSON COUNTIES...

AT 758 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE 
MONITORING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING TORNADOES. ONE 
POTENTIALLY TORNADIC CIRCULATION WAS LOCATED 5 MILES SOUTH OF 
SADLER...MOVING EAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
  SOUTHMAYD AROUND 805 PM CDT...
  SHERMAN AROUND 815 PM CDT...

ANOTHER CIRCULATION WAS NEAR LAKE KIOWA IN COOKE COUNTY...ALSO 
MOVING EAST AT 35 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INTO AN INTERIOR ROOM AWAY FROM WINDOWS.

&&

LAT...LON 3385 9662 3383 9659 3347 9660 3346 9704
      3350 9708 3364 9709 3385 9677 3383 9676
      3383 9673 3387 9669 3388 9659
TIME...MOT...LOC 0058Z 254DEG 29KT 3362 9680

$$


25

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 7:07 PM CDT	Tornado Warning	FWD	Parker	38 min
May 24, 7:26 PM CDT	Tornado Warning	FWD	Denton, Wise	49 min
May 24, 7:28 PM CDT	Tornado Warning	FWD	Parker, Tarrant	47 min
May 24, 7:44 PM CDT	Severe Thunderstorm Warning	FWD	Tarrant	46 min
May 24, 7:56 PM CDT	Tornado Warning	FWD	Dallas, Tarrant	49 min
May 24, 8:04 PM CDT	Tornado Warning	FWD	Collin, Denton	41 min
May 24, 8:08 PM CDT	Tornado Warning	FWD	Grayson	52 min
May 24, 8:26 PM CDT	Severe Thunderstorm Warning	FWD	Parker, Tarrant	64 min
May 24, 8:29 PM CDT	Tornado Warning	FWD	Fannin, Grayson	46 min
May 24, 8:35 PM CDT	Tornado Warning	FWD	Collin	17 min
May 24, 8:41 PM CDT	Tornado Warning	FWD	Dallas, Kaufman, Rockwall	64 min
May 24, 8:44 PM CDT	Tornado Warning	FWD	Tarrant	46 min
May 24, 8:48 PM CDT	Areal Flood Advisory	FWD	Dallas	3 hr
May 24, 8:49 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Grayson	56 min
May 24, 9:09 PM CDT	Tornado Warning	FWD	Fannin, Lamar	51 min
May 24, 9:15 PM CDT	Tornado Warning	FWD	Cooke, Grayson	45 min
May 24, 9:23 PM CDT	Severe Thunderstorm Warning	FWD	Denton	67 min
May 24, 9:30 PM CDT	Tornado Warning	FWD	Hunt, Kaufman, Rains, Rockwall, Van Zandt	60 min
May 24, 9:32 PM CDT	Severe Thunderstorm Warning	FWD	Parker, Tarrant, Wise	58 min
May 24, 9:40 PM CDT	Tornado Warning	FWD	Dallas	33 min
May 24, 9:45 PM CDT	Flash Flood Warning	FWD	Dallas	3 hr
May 24, 9:52 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Fannin, Grayson, Hunt	53 min
May 24, 10:03 PM CDT	Severe Thunderstorm Warning	FWD	Hood, Johnson, Somervell, Tarrant	57 min
May 24, 10:09 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Lamar	66 min
May 24, 10:14 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Rockwall	61 min
May 24, 10:26 PM CDT	Tornado Warning	FWD	Kaufman, Van Zandt	49 min
May 24, 10:29 PM CDT	Severe Thunderstorm Warning	FWD	Bosque, Hamilton	61 min
May 24, 10:42 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Hopkins, Hunt, Rains	63 min
May 24, 10:45 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Hill	60 min
May 24, 10:52 PM CDT	Severe Thunderstorm Warning	FWD	Kaufman	53 min
May 24, 11:01 PM CDT	River Flood Warning	FWD	Dallas	6 hr
May 24, 11:04 PM CDT	Severe Thunderstorm Warning	FWD	Coryell, Lampasas, Mills	56 min
May 24, 11:14 PM CDT	Severe Thunderstorm Warning	FWD	Van Zandt	61 min
May 24, 11:16 PM CDT	Tornado Warning	FWD	Kaufman	29 min
May 24, 11:28 PM CDT	Severe Thunderstorm Warning	FWD	Bosque, McLennan	62 min
May 24, 11:43 PM CDT	Severe Thunderstorm Warning	FWD	Hopkins	15 min
May 24, 11:46 PM CDT	Severe Thunderstorm Warning	FWD	Henderson	59 min
May 25, 12:11 AM CDT	Severe Thunderstorm Warning	FWD	Van Zandt	18 min
May 25, 12:14 AM CDT	Severe Thunderstorm Warning	FWD	Lampasas	26 min
May 25, 12:48 AM CDT	Special Weather Statement	FWD	Anderson, Freestone, Limestone	27 min
May 25, 1:01 AM CDT	Severe Thunderstorm Warning	FWD	Bell	59 min
May 25, 3:13 AM CDT	Special Weather Statement	FWD	Milam	32 min
May 25, 3:46 AM CDT	Special Weather Statement	FWD	Milam	29 min
May 25, 6:28 AM CDT	River Flood Warning	FWD	Hunt, Rockwall	25 hr

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.