Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 155, NWS Tulsa, OK

May 12, 2002Mayes County, Rogers County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 12, 2002, 8:01 PM CDT for Mayes County, Rogers County, Oklahoma. It was in force for 44 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 12, 2002, 8:01 PM CDT (01:01 UTC)
Expired: May 12, 2002, 8:45 PM CDT
In force: 44 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

Counties Mayes County, OK, Rogers County, OK

The radar

The Tulsa radar (KINX), 18 km from the middle of the area, began a volume at 01:01 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 12, 8:21 PM CDT	Hail 0.75	Adair, 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

Lamont, OK (KLMN), launched 00:00Z, 1.0 hours before the alert went out and 180 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 504 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: -61 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 130101
SVRTUL
OKC097-131-130145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
801 PM CDT SUN MAY 12 2002

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MAYES COUNTY IN NORTHEAST OKLAHOMA
  ROGERS COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 845 PM CDT

* AT 801 PM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG
  A LINE EXTENDING FROM 7 MILES NORTHWEST OF PRYOR TO 3 MILES NORTH
  OF VERDIGRIS...MOVING NORTHEAST AT 40 MPH.

* SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...CLAREMORE...
  VERDIGRIS...TIAWAH...FOYIL...OOLOGAH...PRYOR...ADAIR AND PENSACOLA.

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

LAT...LON 3615 9576 3646 9576 3654 9503 3633 9521

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 7:00 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	45 min
May 12, 7:06 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	39 min
May 12, 7:13 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	32 min
May 12, 7:36 PM CDT	Severe Thunderstorm Warning	TSA	Latimer	54 min
May 12, 8:00 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	60 min
May 12, 8:26 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	64 min
May 12, 8:53 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	37 min
May 12, 9:39 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	21 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.