Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 91, NWS Tulsa, OK

May 5, 2002Osage County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 5, 2002, 10:33 PM CDT for Osage County, Oklahoma. It was in force for 42 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 5, 2002, 10:33 PM CDT (03:33 UTC)
Expired: May 5, 2002, 11:15 PM CDT
In force: 42 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

County Osage County, OK

The radar

The Tulsa radar (KINX), 72 km from the middle of the area, began a volume at 03:33 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 5, 10:53 PM CDT	Hail 0.75	Avant, 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

Norman, OK (KOUN), launched 00:00Z, 3.6 hours before the alert went out and 167 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 060333
SVRTUL
OKC113-060415-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1032 PM CDT SUN MAY 5 2002

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEAST OSAGE COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 1115 PM CDT

* AT 1032 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4
  MILES SOUTHEAST OF HOMINY...MOVING NORTHEAST AT 30 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...OSAGE...
  HOMINY...AVANT...BARNSDALL AND SKIATOOK.

HAIL TO THE SIZE OF DIMES 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 3642 9652 3626 9641 3636 9602 3668 9602

The office that day

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

Issued	Product	Office	Counties	Lasted
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, 2:38 AM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	52 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.