Alert archive / Oklahoma / Tornado Warnings in 2001

Tornado Warning 33, NWS Tulsa, OK

November 23, 2001Delaware County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Nov 23, 2001, 7:20 PM CST for Delaware County, Oklahoma. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Nov 23, 2001, 7:20 PM CST (01:20 UTC)
Expired: Nov 23, 2001, 8:00 PM CST
In force: 40 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Delaware County, OK

The radar

The Tulsa radar (KINX), 81 km from the middle of the area, began a volume at 01:21 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
Nov 23, 6:00 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.3 hours before the alert went out and 99 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: 6 J/kg
Mixed-layer CIN: -199 J/kg
Mixed-layer LCL: 970 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 351 m²/s²
0-3 km storm-relative helicity: 377 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.

129 
WFUS54 KTSA 240121
TORTUL
OKC041-240200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
720 PM CST FRI NOV 23 2001

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR
  DELAWARE COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 800 PM CST

* AT 720 PM CST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH
  STRONG ROTATION 2 MILES NORTH OF KANSAS...MOVING NORTHEAST AT 40
  MPH. THIS DANGEROUS STORM COULD PRODUCE A TORNADO AT ANY TIME.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...KANSAS AND
  COLCORD.

LAT...LON 3624 9491 3615 9472 3659 9437 3670 9461

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 23, 6:58 PM CST	Severe Thunderstorm Warning	TSA	LeFlore	47 min
Nov 23, 7:38 PM CST	Severe Thunderstorm Warning	TSA	Creek, Okmulgee, Tulsa	52 min
Nov 23, 8:04 PM CST	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	41 min
Nov 23, 8:23 PM CST	Severe Thunderstorm Warning	TSA	Choctaw, Latimer, Pushmataha	52 min
Nov 23, 8:23 PM CST	Severe Thunderstorm Warning	TSA	Haskell	52 min
Nov 23, 8:39 PM CST	Severe Thunderstorm Warning	TSA	LeFlore	51 min
Nov 23, 9:07 PM CST	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	53 min
Nov 23, 9:15 PM CST	Severe Thunderstorm Warning	TSA	Adair	45 min

Nearby

Tornado Warnings in Oklahoma, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.