Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 310, NWS Tulsa, OK

July 13, 2003LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 13, 2003, 8:25 AM CDT for LeFlore County, Oklahoma. It was in force for 50 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: Jul 13, 2003, 8:25 AM CDT (13:25 UTC)
Expired: Jul 13, 2003, 9:15 AM CDT
In force: 50 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

County LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 11 km from the middle of the area, began a volume at 13:28 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 nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 1.4 hours before the alert went out and 189 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: 1689 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 835 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

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

415 
WUUS54 KTSA 131325
SVRTUL
OKC079-131415-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
825 AM CDT SUN JUL 13 2003

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 915 AM CDT

* AT 825 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4
  MILES WEST OF ARKOMA...MOVING SOUTHEAST AT 20 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...POCOLA AND
  ARKOMA.

HAIL TO THE SIZE OF QUARTERS CAN BE EXPECTED IN THE WARNED AREA. 
STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 3526 9444 3515 9445 3532 9462 3531 9450
          3535 9450 3539 9444

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 4:21 AM CDT	Severe Thunderstorm Warning	TSA	Delaware, Mayes	39 min
Jul 13, 4:31 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee	44 min
Jul 13, 5:00 AM CDT	Severe Thunderstorm Warning	TSA	Adair	60 min
Jul 13, 5:10 AM CDT	Severe Thunderstorm Warning	TSA	Delaware	65 min
Jul 13, 5:54 AM CDT	Severe Thunderstorm Warning	TSA	Adair	66 min
Jul 13, 8:15 AM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	60 min
Jul 13, 8:27 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee	33 min
Jul 13, 8:42 AM CDT	Severe Thunderstorm Warning	TSA	Adair	33 min
Jul 13, 9:10 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	50 min
Jul 13, 9:11 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, Sequoyah	49 min
Jul 13, 9:57 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	63 min
Jul 13, 10:18 AM CDT	Severe Thunderstorm Warning	TSA	Haskell	42 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.