Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 607, NWS Norman, OK

June 12, 2003Baylor County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Jun 12, 2003, 6:06 PM CDT for Baylor County, Texas. It was in force for 39 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: Jun 12, 2003, 6:06 PM CDT (23:06 UTC)
Expired: Jun 12, 2003, 6:45 PM CDT
In force: 39 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Baylor County, TX

The radar

The Altus AFB radar (KFDR), 96 km from the middle of the area, began a volume at 23:05 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
Jun 12, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Sill, OK (KFSI), launched 12:00Z, 11.1 hours before the alert went out and 143 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: 58 J/kg
Mixed-layer CIN: -622 J/kg
Mixed-layer LCL: 1965 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 393 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

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

872 
WUUS54 KOUN 122306
SVROKC
TXC023-122345-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
606 PM CDT THU JUN 12 2003

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BAYLOR COUNTY IN NORTHERN TEXAS

* UNTIL 645 PM CDT

* AT 606 PM CDT...DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 10
  MILES WEST OF WESTOVER...MOVING EAST AT 20 MPH.

* LOCATIONS IN THE WARNING INCLUDE WESTOVER

HAIL UP TO THE SIZE OF GOLFBALLS AND WINDS TO 70 MPH ARE LIKELY.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO ADVANCE WARNING.
MOVE IMMEDIATELY TO A STORM SHELTER... BASEMENT OR STURDY BUILDING IF
A TORNADO IS SIGHTED.

LAT...LON 3357 9923 3340 9925 3340 9895 3360 9895

$$

MAXWELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:01 PM CDT	Severe Thunderstorm Warning	OUN	Knox	59 min
Jun 11, 7:16 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Wilbarger	59 min
Jun 11, 7:29 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Wichita	61 min
Jun 12, 1:13 AM CDT	Severe Thunderstorm Warning	OUN	Wilbarger	47 min
Jun 12, 1:40 AM CDT	Severe Thunderstorm Warning	OUN	Baylor	20 min
Jun 12, 2:32 AM CDT	Severe Thunderstorm Warning	OUN	Archer	43 min
Jun 12, 2:54 AM CDT	Severe Thunderstorm Warning	OUN	Clay	36 min
Jun 12, 5:08 PM CDT	Severe Thunderstorm Warning	OUN	Archer	37 min
Jun 12, 5:43 PM CDT	Severe Thunderstorm Warning	OUN	Archer	47 min

Nearby

Severe Thunderstorm Warnings in Texas, 2003 Every severe thunderstorm warning 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.