Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 290, NWS Tulsa, OK

June 9, 1998Sequoyah County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 9, 1998, 1:43 AM CDT for Sequoyah County, Oklahoma. It was in force for 47 min. 1 report 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
Jun 9, 1998, 1:43 AM CDT (06:43 UTC)
Expired
Jun 9, 1998, 2:30 AM CDT
In force
47 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 42 km from the middle of the area, began a volume at 06:42 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

TimeReportWhereRemark
Jun 9, 2:10 AM CDTHail 0.75Roland, 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

Springfield, MO (KSGF), launched 00:00Z, 6.7 hours before the alert went out and 178 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1998-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 1998-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 525 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
554 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
525 m²/s²
0-3 km storm-relative helicity
624 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 090643 RRA
SVRTUL
OKC135-090730-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
143 AM CDT TUE JUN 9 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA

* UNTIL 230 AM CDT

* AT 141 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  LINE OF SEVERE THUNDERSTORMS EXTENDING FROM 4 MILES NORTH OF VIAN
  TO SHORT...MOVING EAST-SOUTHEAST AT 30 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...
  SALLISAW
  MCKEY
  MULDROW
  ROLAND

  HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 70 MPH CAN BE
  EXPECTED IN THE WARNED AREA.

BE ALERT TO RAPIDLY CHANGING WEATHER ,CONDITIONS AS STORMS APPROACH.

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 Jun 8, 9:00 PM CDT, 4 hours 43 minutes earlier.

Area forecast discussion, Jun 8, 9:00 PM CDT, 4 hours 43 minutes before
FPUS3 KTUL 090156
AFDTUL
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
900 PM CDT MON JUN 8 1998

JUST SENT ANOTHER QUICK UPDATE TO COVER NEW TORNADO WATCH. CONT TO
WATCH TORNADIC SUPERCELL MOVG ACRS PITTBURG...MCINTOSH AND HASKELL
COUNTIES...AS WELL AS OTHER TSTMS N OF OKC AND OVER SC KS. SOUTHERN
SUPERCELL IN AXIS OF BEST INSTABILITY WITH LAPS CAPES AOA 3000 J/KG.
STORMS SHUD CONT NEXT FEW HOURS. WL ISSUE AT LEAST ONE MORE UPDATED
ZFP/RDF PACKAGE BEFORE MIDNIGHT.

SMITH

.TUL...

OK...TORNADO WATCH NUMBER 531 MOST OF SE OK.
AR...NONE.

In the hours before

Local storm report, Jun 8, 9:00 PM CDT, 4 hours 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
900 PM CDT MON JUN 08 1998

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

0856 PM    4 S INDIANOLA             OK   TORNADO
06/08/98   PITTSBURG                      REPORTED BY CIVIL DEFENSE
                                          SPOTTERS
Local storm report, Jun 8, 10:00 PM CDT, 3 hours 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1000 PM CDT MON JUN 08 1998

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

0950 PM    RUSSELLVILLE              OK   TORNADO
06/08/98   PITTSBURG                      REPORTED BY PITTSBURG
                                          COUNTY EOC
Special weather statement, Jun 9, 1:25 AM CDT, 18 minutes before
OKZ049-065-066-070>076-090625-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
125 AM CDT TUE JUN 9 1998

TORNADO WATCH NUMBER 531 HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES IN

EASTERN OKLAHOMA...
         HASKELL             LATIMER             LE FLORE
         MCINTOSH            MUSKOGEE            OKFUSKEE
         OKMULGEE            PITTSBURG           PUSHMATAHA
         SEQUOYAH...

STORMS IN EASTCENTRAL OKLAHOMA ARE EXPECTED TO REMAIN MOSTLY OUT OF
THE TORNADO WATCH AREA FOR THE REST OF THE NIGHT.
Special weather statement, Jun 9, 1:25 AM CDT, 18 minutes before
OKZ049-065-066-070>076-090625-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
125 AM CDT TUE JUN 9 1998

TORNADO WATCH NUMBER 531 HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES IN

EASTERN OKLAHOMA...
         HASKELL             LATIMER             LE FLORE
         MCINTOSH            MUSKOGEE            OKFUSKEE
         OKMULGEE            PITTSBURG           PUSHMATAHA
         SEQUOYAH...

STORMS IN EASTCENTRAL OKLAHOMA ARE EXPECTED TO REMAIN MOSTLY OUT OF
THE TORNADO WATCH AREA FOR THE REST OF THE NIGHT.
Special weather statement, Jun 9, 1:30 AM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
130 AM CDT TUE JUN 9 1998

OKZ054>056-059>061-064-090729-

SEVERE THUNDERSTORM WATCH NUMBER 533 IS NO LONGER IN EFFECT FOR THE
FOLLOWING COUNTIES IN

EASTERN OKLAHOMA...
         CREEK               NOWATA              OSAGE
         PAWNEE              ROGERS              TULSA
         WASHINGTON OK.

STORMS HAVE MOVED EAST OF THESE AREAS AND REDEVELOPMENT OF SEVERE
THUNDERSTORMS IS NOT EXPECTED.

OKZ057-058-062-063-067>069-ARZ001-002-010-011-090900-

SEVERE THUNDERSTORM WATCH NUMBER 533 REMAINS IN EFFECT UNTIL 4 AM
CDT FOR THE FOLLOWING COUNTIES IN

EASTERN OKLAHOMA...
         ADAIR               CHEROKEE            CRAIG
         DELAWARE            MAYES               OTTAWA
         WAGONER...

NORTHWESTERN ARKANSAS...
         BENTON              CARROLL             MADISON
         WASHINGTON AR.

SEVERE THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP ACROSS THESE
AREAS THROUGH THE EARLY MORNING HOURS.
Special weather statement, Jun 9, 1:30 AM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
130 AM CDT TUE JUN 9 1998

OKZ054>056-059>061-064-090729-

SEVERE THUNDERSTORM WATCH NUMBER 533 IS NO LONGER IN EFFECT FOR THE
FOLLOWING COUNTIES IN

EASTERN OKLAHOMA...
         CREEK               NOWATA              OSAGE
         PAWNEE              ROGERS              TULSA
         WASHINGTON OK.

STORMS HAVE MOVED EAST OF THESE AREAS AND REDEVELOPMENT OF SEVERE
THUNDERSTORMS IS NOT EXPECTED.

OKZ057-058-062-063-067>069-ARZ001-002-010-011-090900-

SEVERE THUNDERSTORM WATCH NUMBER 533 REMAINS IN EFFECT UNTIL 4 AM
CDT FOR THE FOLLOWING COUNTIES IN

EASTERN OKLAHOMA...
         ADAIR               CHEROKEE            CRAIG
         DELAWARE            MAYES               OTTAWA
         WAGONER...

NORTHWESTERN ARKANSAS...
         BENTON              CARROLL             MADISON
         WASHINGTON AR.

SEVERE THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP ACROSS THESE
AREAS THROUGH THE EARLY MORNING HOURS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 7:39 PM CDTSevere Thunderstorm WarningTSAOkfuskee51 min
Jun 8, 7:59 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg61 min
Jun 8, 8:09 PM CDTTornado WarningTSAPittsburg51 min
Jun 8, 8:21 PM CDTTornado WarningTSAMcIntosh39 min
Jun 8, 8:50 PM CDTTornado WarningTSAHaskell, McIntosh, Pittsburg70 min
Jun 8, 9:25 PM CDTTornado WarningTSALatimer50 min
Jun 8, 9:29 PM CDTFlash Flood WarningTSAHaskell, Pittsburg3 hr
Jun 8, 9:55 PM CDTTornado WarningTSAHaskell, Latimer, LeFlore65 min
Jun 8, 10:16 PM CDTSevere Thunderstorm WarningTSACreek, Okfuskee44 min
Jun 8, 10:29 PM CDTSevere Thunderstorm WarningTSAOsage46 min
Jun 8, 10:42 PM CDTSevere Thunderstorm WarningTSAOkmulgee48 min
Jun 8, 10:44 PM CDTTornado WarningTSALeFlore46 min
Jun 8, 11:13 PM CDTSevere Thunderstorm WarningTSAMuskogee47 min
Jun 8, 11:33 PM CDTSevere Thunderstorm WarningTSALeFlore42 min
Jun 8, 11:56 PM CDTSevere Thunderstorm WarningTSACherokee, Muskogee49 min
Jun 9, 12:24 AM CDTSevere Thunderstorm WarningTSAAdair51 min
Jun 9, 12:38 AM CDTFlash Flood WarningTSAMuskogee2 hr
Jun 9, 12:41 AM CDTSevere Thunderstorm WarningTSACherokee, Muskogee49 min
Jun 9, 12:55 AM CDTFlash Flood WarningTSAAdair, Cherokee3 hr
Jun 9, 1:09 AM CDTSevere Thunderstorm WarningTSASequoyah51 min
Jun 9, 1:12 AM CDTSevere Thunderstorm WarningTSAAdair48 min
Jun 9, 1:26 AM CDTSevere Thunderstorm WarningTSACherokee34 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1998Every 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; radar from the NEXRAD Level II archive.