Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 99, NWS Tulsa, OK

May 6, 2002Okmulgee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 6, 2002, 2:38 AM CDT for Okmulgee County, Oklahoma. It was in force for 52 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: May 6, 2002, 2:38 AM CDT (07:38 UTC)
Expired: May 6, 2002, 3:30 AM CDT
In force: 52 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

County Okmulgee County, OK

The radar

The Tulsa radar (KINX), 67 km from the middle of the area, began a volume at 07:41 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
May 6, 1:30 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 7.6 hours before the alert went out and 137 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: 1804 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 897 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 152 m²/s²
0-3 km storm-relative helicity: 216 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 060738
SVRTUL
OKC111-060830-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
240 AM CDT MON MAY 6 2002

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OKMULGEE COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 330 AM CDT

* AT 237 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4
  MILES WEST OF OKMULGEE...MOVING EAST AT 45 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...OKMULGEE...
  GRAYSON...SCHULTER...MORRIS...PRESTON...BEGGS AND BALD HILL.

HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 65 MPH CAN BE EXPECTED IN 
THE WARNED AREA. STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM 
HAS PASSED.

LAT...LON 3585 9617 3554 9618 3544 9597 3556 9572
          3586 9577

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 10:33 PM CDT	Severe Thunderstorm Warning	TSA	Osage	42 min
May 5, 11:00 PM CDT	Severe Thunderstorm Warning	TSA	Washington	45 min
May 5, 11:08 PM CDT	Severe Thunderstorm Warning	TSA	Nowata	52 min
May 5, 11:11 PM CDT	Severe Thunderstorm Warning	TSA	Osage	49 min
May 5, 11:27 PM CDT	Severe Thunderstorm Warning	TSA	Rogers	48 min
May 6, 12:28 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	47 min
May 6, 1:52 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee, Tulsa	53 min
May 6, 2:09 AM CDT	Severe Thunderstorm Warning	TSA	Wagoner	51 min
May 6, 2:39 AM CDT	Severe Thunderstorm Warning	TSA	Delaware	36 min
May 6, 2:47 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee	43 min
May 6, 2:51 AM CDT	Severe Thunderstorm Warning	TSA	Muskogee	39 min
May 6, 3:01 AM CDT	Severe Thunderstorm Warning	TSA	Wagoner	44 min
May 6, 3:20 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee	55 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.