Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 86, NWS Tulsa, OK

May 2, 2002Cherokee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 2, 2002, 12:22 AM CDT for Cherokee County, Oklahoma. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 2, 2002, 12:22 AM CDT (05:22 UTC)
Expired: May 2, 2002, 1:00 AM CDT
In force: 38 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

County Cherokee County, OK

The radar

The Tulsa radar (KINX), 49 km from the middle of the area, began a volume at 05:26 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.

What was reported inside it

Time	Report	Where	Remark
May 2, 12:40 AM CDT	Hail 1	Hulbert, OK

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.4 hours before the alert went out and 156 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: 1175 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 1882 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 020522
SVRTUL
OKC021-020600-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1222 AM CDT THU MAY 2 2002

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA

* UNTIL 100 AM CDT

* AT 1222 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 14
  MILES WEST OF HULBERT...MOVING EAST AT 35 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...TAHLEQUAH...
  HULBERT AND ELDON.

HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 MPH CAN BE 
EXPECTED IN THE WARNED AREA. STAY INDOORS AND AWAY FROM WINDOWS 
UNTIL THE STORM HAS PASSED.

LAT...LON 3603 9529 3584 9526 3581 9482 3605 9480

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 8:29 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	46 min
May 1, 9:17 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	28 min
May 1, 9:28 PM CDT	Tornado Warning	TSA	Adair, Cherokee	32 min
May 1, 11:26 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee, Tulsa	49 min
May 1, 11:37 PM CDT	Severe Thunderstorm Warning	TSA	Creek	23 min
May 1, 11:49 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	41 min
May 2, 12:51 AM CDT	Severe Thunderstorm Warning	TSA	Mayes	24 min
May 2, 1:01 AM CDT	Severe Thunderstorm Warning	TSA	Adair	44 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.