Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 21, NWS Norman, OK

March 17, 2003Cotton County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 17, 2003, 2:52 PM CST for Cotton County, Oklahoma. It was in force for 53 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: Mar 17, 2003, 2:52 PM CST (20:52 UTC)
Expired: Mar 17, 2003, 3:45 PM CST
In force: 53 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Cotton County, OK

The radar

The Altus AFB radar (KFDR), 43 km from the middle of the area, began a volume at 20:52 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
Mar 17, 12:45 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.9 hours before the alert went out and 154 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: 264 J/kg
Mixed-layer CIN: -285 J/kg
Mixed-layer LCL: 965 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 97 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 
WUUS54 KOUN 172052
SVROKC
OKC033-172145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
251 PM CST MON MAR 17 2003

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COTTON COUNTY IN SOUTHWEST OKLAHOMA

* UNTIL 345 PM CST

* AT 251 PM CST...DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 6   
MILES SOUTH OF DEVOL...MOVING NORTHEAST AT 20 MPH. THIS STORM 
PRODUCED HAIL TO THE SIZE OF NICKELS NEAR BURKBURNETT.

* LOCATIONS IN THE WARNING INCLUDE COOKIETOWN...DEVOL AND RANDLETT

HAIL UP TO THE SIZE OF QUARTERS IS LIKELY WITH THIS SEVERE 
THUNDERSTORM.

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 3413 9876 3407 9853 3430 9826 3440 9846

$$

CJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 1:43 PM CST	Severe Thunderstorm Warning	OUN	Garvin	47 min
Mar 17, 1:55 PM CST	Severe Thunderstorm Warning	OUN	Kiowa	65 min
Mar 17, 2:08 PM CST	Severe Thunderstorm Warning	OUN	McClain, Pottawatomie	52 min
Mar 17, 2:41 PM CST	Tornado Warning	OUN	Kiowa	34 min
Mar 17, 2:48 PM CST	Severe Thunderstorm Warning	OUN	Garvin, Stephens	42 min
Mar 17, 2:59 PM CST	Severe Thunderstorm Warning	OUN	Washita	61 min
Mar 17, 3:04 PM CST	Severe Thunderstorm Warning	OUN	Caddo	56 min
Mar 17, 3:13 PM CST	Tornado Warning	OUN	Kiowa	32 min
Mar 17, 3:22 PM CST	Tornado Warning	OUN	Caddo	23 min
Mar 17, 3:33 PM CST	Severe Thunderstorm Warning	OUN	Lincoln, Payne	42 min
Mar 17, 3:43 PM CST	Tornado Warning	OUN	Washita	47 min
Mar 17, 3:46 PM CST	Severe Thunderstorm Warning	OUN	Cotton	44 min
Mar 17, 4:11 PM CST	Severe Thunderstorm Warning	OUN	Caddo	49 min
Mar 17, 4:32 PM CST	Severe Thunderstorm Warning	OUN	Canadian	58 min
Mar 17, 4:34 PM CST	Severe Thunderstorm Warning	OUN	Cotton	56 min
Mar 17, 4:36 PM CST	Tornado Warning	OUN	Caddo	24 min
Mar 17, 4:40 PM CST	Severe Thunderstorm Warning	OUN	Stephens	65 min
Mar 17, 4:54 PM CST	Severe Thunderstorm Warning	OUN	Garfield	36 min
Mar 17, 5:00 PM CST	Tornado Warning	OUN	Caddo	30 min
Mar 17, 5:07 PM CST	Tornado Warning	OUN	Canadian	23 min
Mar 17, 5:13 PM CST	Severe Thunderstorm Warning	OUN	Comanche	47 min
Mar 17, 5:15 PM CST	Tornado Warning	OUN	Stephens	45 min
Mar 17, 5:29 PM CST	Severe Thunderstorm Warning	OUN	Canadian	61 min
Mar 17, 5:32 PM CST	Severe Thunderstorm Warning	OUN	Blaine	43 min
Mar 17, 5:32 PM CST	Severe Thunderstorm Warning	OUN	Kingfisher	58 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 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.