Alert archive / Texas / Tornado Warnings in 2003

Tornado Warning 21, NWS Norman, OK

April 15, 2003Hardeman County, Wilbarger County, Texas

NWS Norman, OK issued this tornado warning at Apr 15, 2003, 8:11 PM CDT for Hardeman County, Wilbarger County, Texas. It was in force for 49 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 15, 2003, 8:11 PM CDT (01:11 UTC)
Expired: Apr 15, 2003, 9:00 PM CDT
In force: 49 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

Counties Hardeman County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 60 km from the middle of the area, began a volume at 01:12 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 15, 5:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.2 hours before the alert went out and 221 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1788 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: -314 m²/s²
0-3 km storm-relative helicity: -45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KOUN 160111
TOROKC
TXC197-487-160200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
810 PM CDT TUE APR 15 2003

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  HARDEMAN COUNTY IN NORTHERN TEXAS
  WILBARGER COUNTY IN NORTHERN TEXAS

* UNTIL 900 PM CDT

* AT 810 PM CDT...DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO 11 MILES SOUTHWEST OF MEDICINE
  MOUND...MOVING EAST AT 55 MPH.

* LOCATIONS IN THE WARNING INCLUDE CHILLICOTHE...MEDICINE MOUND...
  ODELL AND VERNON

A TORNADO MAY FORM AT ANYTIME. TAKE COVER NOW. ABANDON MOBILE HOMES
AND VEHICLES. IF POSSIBLE... MOVE TO A BASEMENT OR STORM SHELTER.
OTHERWISE... MOVE TO AN INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR.
STAY AWAY FROM WINDOWS.

LAT...LON 3422 9986 3410 9976 3414 9923 3445 9936

$$
ANDRA

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 15, 7:06 PM CDT	Tornado Warning	OUN	Hardeman	24 min
Apr 15, 7:23 PM CDT	Tornado Warning	OUN	Hardeman	37 min
Apr 15, 7:44 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	46 min
Apr 15, 8:23 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	52 min
Apr 15, 8:41 PM CDT	Tornado Warning	OUN	Knox	34 min
Apr 15, 8:57 PM CDT	Severe Thunderstorm Warning	OUN	Wilbarger	48 min
Apr 15, 9:01 PM CDT	Tornado Warning	OUN	Baylor	44 min
Apr 15, 9:15 PM CDT	Severe Thunderstorm Warning	OUN	Knox	30 min
Apr 15, 9:16 PM CDT	Severe Thunderstorm Warning	OUN	Wichita	44 min
Apr 15, 9:42 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor	48 min
Apr 15, 10:19 PM CDT	Severe Thunderstorm Warning	OUN	Clay	41 min
Apr 15, 10:59 PM CDT	Severe Thunderstorm Warning	OUN	Clay	46 min
Apr 15, 11:11 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Wichita	49 min
Apr 15, 11:44 PM CDT	Severe Thunderstorm Warning	OUN	Clay	46 min

Nearby

Tornado Warnings in Texas, 2003 Every tornado warning in 2003 Tornadoes in 2003

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.