Alert archive / Texas / Tornado Warnings in 2004

Tornado Warning 13, NWS Fort Worth, TX

April 23, 2004Denton County, Tarrant County, Texas

NWS Fort Worth, TX issued this tornado warning at Apr 23, 2004, 8:17 PM CDT for Denton County, Tarrant County, Texas. It was in force for 28 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 23, 2004, 8:17 PM CDT (01:17 UTC)
Expired: Apr 23, 2004, 8:45 PM CDT
In force: 28 min
Issued by: NWS Fort Worth, TX
Area: Counties, with a storm outline in the text

Counties Denton County, TX, Tarrant County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 54 km from the middle of the area, began a volume at 01:21 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 nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.3 hours before the alert went out and 26 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: 1475 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 895 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

067 
WFUS54 KFWD 240117
TORFTW
TXC121-439-240145-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
816 PM CDT FRI APR 23 2004

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN DENTON COUNTY IN NORTH CENTRAL TEXAS
  NORTHERN TARRANT COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 845 PM CDT

* AT 816 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  DEVELOPING TORNADO OVER ROANOKE...MOVING NORTHEAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  TROPHY CLUB AROUND 825 PM CDT
  BARTONVILLE...ARGYLE AROUND 840 PM CDT

SPOTTER REPORTS DEVELOPING TORNADO AT HIGHWAY 377 AND 1709 IN 
KELLER. TAKE COVER IN A BASEMENT...OR ON THE LOWEST FLOOR OF YOUR 
HOME IN AN INTERIOR CLOSET OR BATHROOM. USE BLANKETS OR PILLOWS FOR 
COVER.

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 3297 9733 3296 9721 3319 9704 3320 9728

$$


ROBBINS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 7:09 PM CDT	Severe Thunderstorm Warning	FWD	Young	51 min
Apr 23, 7:51 PM CDT	Severe Thunderstorm Warning	FWD	Jack	54 min
Apr 23, 8:01 PM CDT	Severe Thunderstorm Warning	FWD	Denton, Tarrant	44 min
Apr 23, 8:47 PM CDT	Tornado Warning	FWD	Denton	43 min
Apr 23, 10:16 PM CDT	Severe Thunderstorm Warning	FWD	Cooke	44 min
Apr 23, 11:22 PM CDT	Flash Flood Warning	FWD	Denton, Wise	3 hr
Apr 24, 5:26 AM CDT	Flash Flood Warning	FWD	Bosque, Coryell, Hamilton, Hill, McLennan, Navarro	3 hr
Apr 24, 8:29 AM CDT	Flash Flood Warning	FWD	Bosque, Coryell, Hamilton, Hill, McLennan, Navarro	3 hr

Nearby

Tornado Warnings in Texas, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.