Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 154, NWS Tulsa, OK

May 2, 1998Haskell County, LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 2, 1998, 9:56 PM CDT for Haskell County, LeFlore County, Oklahoma. It was in force for 49 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 2, 1998, 9:56 PM CDT (02:56 UTC)
Expired: May 2, 1998, 10:45 PM CDT
In force: 49 min
Issued by: NWS Tulsa, OK
Area: Whole counties

Counties Haskell County, OK, LeFlore County, OK

What was reported inside it

Time	Report	Where	Remark
May 2, 10:00 PM CDT	Hail 0.88	Stigler, OK
May 2, 10:05 PM CDT	Hail 0.75	Pocola, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 2, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.9 hours before the alert went out and 227 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: 132 J/kg
Mixed-layer CIN: -243 J/kg
Mixed-layer LCL: 1428 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 129 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.

697 
WUUS54 KTSA 030258 RRA
SVRTUL
OKC061-079-030345-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
956 PM CDT SAT MAY 2 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  EASTERN HASKELL COUNTY - SOUTHEASTERN OKLAHOMA
  NORTHERN LE FLORE COUNTY - SOUTHEASTERN OKLAHOMA

* UNTIL 1045 PM CDT

* AT 956 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM 4 MILES SOUTHWEST OF KEOTA...MOVING SOUTHEAST
  AT 30 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...
  PANAMA
  BOKOSHE

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



BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

WHEN THUNDERSTORMS APPROACH...TAKE COVER INSIDE A STURDY BUILDING.
STAY AWAY FROM WINDOWS. TO PROTECT YOURSELF FROM LIGHTNING STAY OFF
THE PHONE AND DONT USE HAND HELD ELECTRICAL APPLIANCES. MOTORISTS
SHOULD NEVER DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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 May 2, 9:45 PM CDT, 11 minutes earlier.

Area forecast discussion, May 2, 9:45 PM CDT, 11 minutes before

FPUS3 KTUL 030251
AFDTUL

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
945 PM CDT SAT MAY 2 1998

WILL UPDATE ZONES SHORTLY...MAINLY TO LOWER MINS A BIT OVER NE OK.
NW WINDS ARE NOT AS STRONG AS PREVIOUSLY ADVERTISED AND WITH CLEAR
SKIES AND DRY AIRMASS MID TO UPPER 40S LOOKS REASONABLE.  MAY ALSO
TWEAK SKY CONDITIONS IN A FEW ZONES.  WITH NEW TSRA DEVELOPMENT MAY
...ALSO INCREASE POPS FOR SE OK/W CNTRL AR.

FCSTID = 19

.TUL...
OK...NONE.
AR...NONE.

In the hours before

Local storm report, May 2, 7:58 PM CDT, 1 hour 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
758 PM CDT SAT MAY 02 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0434 PM    3 NE MUSKOGEE             OK   1 INCH HAIL
05/02/98   MUSKOGEE

0448 PM    BRAGGS                    OK   .75 INCH HAIL
05/02/98   MUSKOGEE

0539 PM    HARTFORD                  AR   .75 INCH HAIL
05/02/98   SEBASTIAN

0550 PM    POTEAU KERR ARPT          OK   2 INCH HAIL
05/02/98   LE FLORE

0550 PM    POTEAU                    OK   .75 INCH HAIL f
05/02/98   LE FLORE

0551 PM    CAMERON                   OK   .75 INCH HAIL
05/02/98   LE FLORE

Local storm report, May 2, 7:58 PM CDT, 1 hour 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
758 PM CDT SAT MAY 02 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0434 PM    3 NE MUSKOGEE             OK   1 INCH HAIL
05/02/98   MUSKOGEE

0448 PM    BRAGGS                    OK   .75 INCH HAIL
05/02/98   MUSKOGEE

0539 PM    HARTFORD                  AR   .75 INCH HAIL
05/02/98   SEBASTIAN

0550 PM    POTEAU KERR ARPT          OK   2 INCH HAIL
05/02/98   LE FLORE

0550 PM    POTEAU                    OK   .75 INCH HAIL f
05/02/98   LE FLORE

0551 PM    CAMERON                   OK   .75 INCH HAIL
05/02/98   LE FLORE

Special weather statement, May 2, 8:00 PM CDT, 1 hour 56 minutes before

ARZ019-020-029-030130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
800 PM CDT SAT MAY 2 1998

SEVERE THUNDERSTORM WATCH NUMBER 269 HAS BEEN CANCELLED FOR THE
FOLLOWING COUNTIES IN WESTERN ARKANSAS...

CRAWFORD   FRANKLIN   SEBASTIAN

THE THREAT OF SEVERE WEATHER HAS SHIFTED WELL SOUTH AND EAST OF
THESE COUNTIES.

Special weather statement, May 2, 8:00 PM CDT, 1 hour 56 minutes before

ARZ019-020-029-030130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
800 PM CDT SAT MAY 2 1998

SEVERE THUNDERSTORM WATCH NUMBER 269 HAS BEEN CANCELLED FOR THE
FOLLOWING COUNTIES IN WESTERN ARKANSAS...

CRAWFORD   FRANKLIN   SEBASTIAN

THE THREAT OF SEVERE WEATHER HAS SHIFTED WELL SOUTH AND EAST OF
THESE COUNTIES.

Special weather statement, May 2, 9:15 PM CDT, 41 minutes before

OKZ049-053-073>076-030245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
915 PM CDT SAT MAY 2 1998

SEVERE THUNDERSTORM WATCH NUMBER 268 HAS BEEN CANCELLED.

THE FOLLOWING COUNTIES IN SOUTHEAST OKLAHOMA ARE NO LONGER
IN A SEVERE THUNDERSTORM WATCH...

PITTSBURG    HASKELL    LATIMER    LE FLORE
PUSHMATAHA   CHOCTAW

Special weather statement, May 2, 9:15 PM CDT, 41 minutes before

OKZ049-053-073>076-030245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
915 PM CDT SAT MAY 2 1998

SEVERE THUNDERSTORM WATCH NUMBER 268 HAS BEEN CANCELLED.

THE FOLLOWING COUNTIES IN SOUTHEAST OKLAHOMA ARE NO LONGER
IN A SEVERE THUNDERSTORM WATCH...

PITTSBURG    HASKELL    LATIMER    LE FLORE
PUSHMATAHA   CHOCTAW

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1998 Every severe thunderstorm warning in 1998

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.