Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 283, NWS Tulsa, OK

October 6, 2002Pittsburg County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Oct 6, 2002, 2:52 PM CDT for Pittsburg County, Oklahoma. It was in force for 38 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: Oct 6, 2002, 2:52 PM CDT (19:52 UTC)
Expired: Oct 6, 2002, 3:30 PM CDT
In force: 38 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

County Pittsburg County, OK

The radar

The Western Arkansas radar (KSRX), 130 km from the middle of the area, began a volume at 19:52 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 7.9 hours before the alert went out and 152 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: 186 J/kg
Mixed-layer CIN: -334 J/kg
Mixed-layer LCL: 1470 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 265 m²/s²
0-3 km storm-relative helicity: 260 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

767 
WUUS54 KTSA 061952
SVRTUL
OKC121-062030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
251 PM CDT SUN OCT 6 2002

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PITTSBURG COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 330 PM CDT

* AT 251 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 11
  MILES WEST OF MCALESTER...MOVING EAST AT 30 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...MCALESTER...
  KREBS...BLOCKER AND CROWDER.

HAIL TO THE SIZE OF NICKLES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED 
IN THE WARNED AREA. 

STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.  BE 
ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

LAT...LON 3502 9600 3491 9596 3491 9551 3503 9551
          3516 9552

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 6, 11:15 AM CDT, 3 hours 37 minutes earlier.

Area forecast discussion, Oct 6, 11:15 AM CDT, 3 hours 37 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OKLAHOMA
1115 AM CDT SUN OCT 6 2002

COLD FRONT ABOUT TO ENTER OSAGE COUNTY AND WILL CONTINUE SOUTHEAST
TREK THROUGH THE FORECAST AREA. REMOVED POPS FROM NORTHWESTERN ZONES
FOR THIS AFTERNOON AS SHOWERS AND THUNDERSTORMS AHEAD OF FRONT HAVE
MOVED OUT OF THE AREA. ADJUSTED TEMPS SLIGHTLY TO ACCOUNT FOR CLOUDS
AND PRECIP.

FORECAST ID = 03

.TSA...
AR...NONE.
OK...NONE.

Hazardous weather outlook, Oct 6, 1:00 PM CDT, 1 hour 52 minutes before

ARZ001-002-010-011-019-020-029-OKZ049-053>076-071200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CDT SUN OCT 6 2002

THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AND MUCH OF
EASTERN OKLAHOMA.

.DAY ONE...

SEVERE WEATHER OUTLOOK
AREA 1...ALONG AND SOUTH OF A LINE THROUGH EUFAULA... FAYETTEVILLE
...BERRYVILLE

PROBABILITY OF THUNDERSTORMS...100
IF THUNDERSTORMS DEVELOP...
     PROBABILITY OF SEVERE STORMS...60
     TIME OF INITIAL EVENT...230 PM
     PROBABILITY OF A TORNADO / F2 OR GREATER TORNADO...10/00
     PROBABILITY OF GOLFBALL SIZE HAIL OR LARGER...30
     PROBABILITY OF 73 MPH WIND OR GREATER...40

GIVEN PROBABILITIES REPRESENT THE POTENTIAL FOR AN OCCURRENCE
ANYWHERE IN THE DEFINED AREA.

DISCUSSION...
A COLD FRONT WILL PUSH ACROSS THE REGION DURING THE NEXT 8 HOURS.
THE ATMOSHPHERE ACROSS SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS
WILL BECOME MODERATELY UNSTABLE WITH CAPES TO AROUND 2000 AT
TEMPERATURES CLIMB INTO THE 80S.  THUNDERSTORMS ARE EXPECTED TO
REDEVELOP BY EARLY AFTERNOON AHEAD OF THE COLD FRONT ALONG THE EDGE
OF THE EXISTING CLOUDS AND PRECIPITATION.  MODERATE INSTABILITY AND
WIND SHEAR ALOFT WILL SUPPORT A FEW STORMS PRODUCING HAIL.  IN
ADDITION...THE MOISTURE PROFILE MAY ALSO BE SUPPORTIVE OF DOWNBURST
WINDS.  WIND SHEAR ALOFT WILL BE MARGINAL FOR SUPERCELLS.  THE STORM
ACTIVITY WILL BE PUSHED SOUTH BY THE FRONT...WITH THE STORMS ENDING
FROM NORTH TO SOUTH.  THE FRONT WILL BE EXITING THE AREA BY LATE
EVENING.

.SPOTTER / EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTERS IN SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS SHOULD BE
PREPARED FOR ACTIVIATION THIS AFTERNOON AND THIS EVENING.

.DAY TWO THROUGH SEVEN...
THE NEXT WEATHER SYSTEM TO MOVE THROUGH THE REGION WILL ARRIVE ON
TUESDAY.  AT THIS TIME IT APPEARS THAT THE ATMOSPHERE WILL BE
RELATIVELY STABLE AND THUNDERSTORMS ARE NOT EXPECTED.

RELATED GRAPHICAL INFORMATION CAN BE FOUND AT...
WWW.SRH.NOAA.GOV/TULSA

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 6, 5:46 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.