Alert archive / Texas / Tornado Warnings in 2013

Tornado Warning 21, NWS Fort Worth, TX

May 17, 2013Stephens County, Young County, Texas

NWS Fort Worth, TX issued this tornado warning at May 17, 2013, 8:00 PM CDT for Stephens County, Young County, Texas. It was in force for 45 min. 1 report 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: May 17, 2013, 8:00 PM CDT (01:00 UTC)
Expired: May 17, 2013, 8:45 PM CDT
In force: 45 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Stephens County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 66 km from the middle of the area, began a volume at 01:02 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
May 17, 8:27 PM CDT	HAIL 2.5	Eliasville, TX	TENNIS BALL HAIL IN ELIASVILLE

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
May 17, 3:03 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.0 hours before the alert went out and 132 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: 2935 J/kg
Mixed-layer CIN: -254 J/kg
Mixed-layer LCL: 1322 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

639 
WFUS54 KFWD 180100
TORFWD
TXC429-503-180145-
/O.NEW.KFWD.TO.W.0021.130518T0100Z-130518T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
800 PM CDT FRI MAY 17 2013

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN STEPHENS COUNTY IN NORTH CENTRAL TEXAS...
  SOUTH CENTRAL YOUNG COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 845 PM CDT

* AT 800 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER EXTREME
  SOUTH CENTRAL YOUNG COUNTY...MOVING SOUTHEAST AT 10 MPH.

* THE TORNADO WILL BE NEAR...
  IVAN AT 810 PM CDT

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.

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

&&

LAT...LON 3286 9857 3281 9881 3298 9889 3303 9869
TIME...MOT...LOC 0100Z 330DEG 10KT 3295 9878

$$


82/JLD

1 follow-up statement

759 
WWUS54 KFWD 180142
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
842 PM CDT FRI MAY 17 2013

TXC429-503-180151-
/O.EXP.KFWD.TO.W.0021.000000T0000Z-130518T0145Z/
STEPHENS TX-YOUNG TX-
842 PM CDT FRI MAY 17 2013

...THE TORNADO WARNING FOR SOUTH CENTRAL YOUNG AND NORTHEASTERN
STEPHENS COUNTIES EXPIRES AT 845 PM CDT...

AT 841 PM CDT THE SEVERE THUNDERSTORM THAT PROMPTED THE TORNADO 
WARNING NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.  THE 
TORNADO WARNING WILL EXPIRE AT 845 PM.

THIS STORM IS STILL SEVERE AND IS CAPABLE OF PRODUCING LARGE HAIL 
AND DAMAGING WINDS.

LAT...LON 3286 9857 3281 9881 3298 9889 3303 9869
TIME...MOT...LOC 0141Z 330DEG 10KT 3285 9871

$$


DUNN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 7:13 PM CDT	Tornado Warning	FWD	Stephens, Young	47 min
May 17, 7:22 PM CDT	Severe Thunderstorm Warning	FWD	Stephens	53 min
May 17, 7:42 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Young	63 min
May 17, 8:12 PM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto, Stephens	63 min
May 17, 8:38 PM CDT	Special Weather Statement	FWD	Jack, Wise	52 min
May 17, 8:42 PM CDT	Severe Thunderstorm Warning	FWD	Young	48 min
May 17, 8:46 PM CDT	Areal Flood Advisory	FWD	Stephens, Young	3 hr
May 17, 10:05 PM CDT	Special Weather Statement	FWD	Wise	25 min
May 17, 10:57 PM CDT	Special Weather Statement	FWD	Comanche	33 min

Nearby

Tornado Warnings in Texas, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.