Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 93, NWS Fort Worth, TX

May 24, 2011Collin County, Denton County, Texas

NWS Fort Worth, TX issued this tornado warning at May 24, 2011, 8:04 PM CDT for Collin County, Denton County, Texas. It was in force for 41 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, 8:04 PM CDT (01:04 UTC)
Expired: May 24, 2011, 8:45 PM CDT
In force: 41 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Collin County, TX, Denton County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 92 km from the middle of the area, began a volume at 01:04 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, 1.1 hours before the alert went out and 69 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.

729 
WFUS54 KFWD 250104
TORFWD
TXC085-121-250145-
/O.NEW.KFWD.TO.W.0093.110525T0104Z-110525T0145Z/

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

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN COLLIN COUNTY IN NORTH CENTRAL TEXAS...
  EASTERN DENTON COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 845 PM CDT

* AT 804 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED 
A   DEVELOPING TORNADO NEAR COPPER CANYON...MOVING EAST AT 40 MPH.  
THIS IS A DANGEROUS STORM...IF YOU ARE IN ITS PATH...TAKE COVER 
IMMEDIATELY!

* THE TORNADO WILL BE NEAR...
  LAKEWOOD VILLAGE...LAKE DALLAS...SHADY SHORES AND HICKORY CREEK
  AROUND 810 PM CDT...
  LITTLE ELM...LAKE LEWISVILLE...LINCOLN PARK AND KRUGERVILLE AROUND
  815 PM CDT...
  HACKBERRY AND THE COLONY AROUND 820 PM CDT...

THIS WILL IMPACT THE FOLLOWING INTERSTATES...
I-35 BETWEEN MILE MARKERS 468 AND 482...
I-35W BETWEEN MILE MARKERS 71 AND 85...
I-35E BETWEEN MILE MARKERS 80 AND 96.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT TUESDAY EVENING
FOR NORTH CENTRAL TEXAS.

&&

LAT...LON 3340 9656 3339 9652 3298 9652 3299 9718
      3341 9717
TIME...MOT...LOC 0104Z 262DEG 36KT 3313 9708

$$


CAVANAUGH

1 follow-up statement

502 
WWUS54 KFWD 250127
SVSFWD

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

TXC085-121-250145-
/O.CON.KFWD.TO.W.0093.000000T0000Z-110525T0145Z/
DENTON TX-COLLIN TX-
827 PM CDT TUE MAY 24 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR WESTERN
COLLIN AND SOUTHEASTERN DENTON COUNTIES...

AT 824 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE 
MONITORING A SEVERE THUNDERSTORM WITH A HISTORY OF PRODUCING AT 
LEAST ONE TORNADO. THE POTENTIALLY TORNADIC CIRCULATION WAS LOCATED 
NEAR HACKBERRY...MOVING EAST AT 35 MPH.

THE TORNADO WILL BE NEAR...
  FRISCO AROUND 830 PM CDT...
  PLANO AROUND 835 PM CDT...
  ALLEN AND MCKINNEY AROUND 845 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO AN INTERIOR BATHROOM...CLOSET...OR HALLWAY ON THE LOWEST 
FLOOR OF YOUR BUILDING.

&&

LAT...LON 3340 9656 3339 9652 3298 9652 3299 9718
      3314 9699 3340 9684
TIME...MOT...LOC 0124Z 266DEG 28KT 3313 9686

$$


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, 7:33 PM CDT	Tornado Warning	FWD	Cooke, Grayson	42 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, 8:08 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.