Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 430, NWS Norman, OK

June 12, 2004Clay County, Texas; Jefferson County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 12, 2004, 11:16 PM CDT for Clay County, Texas; Jefferson County, Oklahoma. It was in force for 29 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, 2004, 11:16 PM CDT (04:16 UTC)
Expired: Jun 12, 2004, 11:45 PM CDT
In force: 29 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

Counties Jefferson County, OK, Clay County, TX

The radar

The Altus AFB radar (KFDR), 94 km from the middle of the area, began a volume at 04:16 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, 10:45 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 4.3 hours before the alert went out and 145 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: 2633 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1393 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOUN 130416 CCA
SVROKC
OKC067-TXC077-130445-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1115 PM CDT SAT JUN 12 2004

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLAY COUNTY IN NORTHERN TEXAS
  JEFFERSON COUNTY IN SOUTHERN OKLAHOMA

* UNTIL 1145 PM CDT

* AT 1115 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM HASTINGS
  TO 8 MILES NORTHEAST OF BELLEVUE...MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IN THE WARNING INCLUDE ADDINGTON...BELLEVUE...
  BLUEGROVE...BUFFALO SPRINGS...HASTINGS...HENRIETTA...JOY...RYAN...
  SOUTHEASTERN WAURIKA LAKE...SUGDEN...TERRAL...VASHTI AND WAURIKA

THESE STORMS WERE COLLAPSING... BUT STILL MAY PRODUCE WIND GUSTS 
FROM 60 TO 70 MPH THROUGH 1145 PM ACROSS CLAY AND WESTERN JEFFERSON 
COUNTIES.

LAT...LON 3426 9811 3353 9839 3349 9800 3426 9776

$$
 MILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 9:00 PM CDT	Severe Thunderstorm Warning	OUN	Knox	60 min
Jun 12, 9:33 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor	57 min
Jun 12, 10:00 PM CDT	Severe Thunderstorm Warning	OUN	Knox	30 min
Jun 12, 10:27 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	48 min
Jun 12, 10:30 PM CDT	Severe Thunderstorm Warning	OUN	Wichita, Wilbarger	45 min
Jun 12, 11:15 PM CDT	Severe Thunderstorm Warning	OUN	Clay	45 min
Jun 12, 10:47 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	43 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004 Severe Thunderstorm Warnings in Oklahoma, 2004 Every severe thunderstorm warning 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.