Alert archive / Oklahoma / Tornado Warnings in 1998

Tornado Warning 8, NWS Tulsa, OK

April 7, 1998LeFlore County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Apr 7, 1998, 12:51 AM CDT for LeFlore County, Oklahoma. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 7, 1998, 12:51 AM CDT (05:51 UTC)
Expired
Apr 7, 1998, 1:30 AM CDT
In force
39 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County LeFlore County, OK

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 6, 10:00 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.9 hours before the alert went out and 237 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 1998-04-07Temperature 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 1998-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 square meters per square second.1939587897117136Sfc1 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
2213 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 070551 RRA
TORTUL
OKC079-070630-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
1251 AM CDT TUE APR 7 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 130 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHEASTERN OKLAHOMA

   ...SOUTHERN LE FLORE COUNTY

AT 1250 AM A POSSIBLE TORNADO WAS INDICATED ABOUT 2 MILES NORTH OF
WHITESBORO.  THE STORM WAS MOVING EAST AT 25 MILES AN HOUR.

THE STORM WILL PASS NORTH OF MUSE.

THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE IN
THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE. OTHERWISE... GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR. AVOID WINtDOWS AND DOORS. ABANDON CARS AND MOBILE HOMES FOR
A STURDIER BUILDING OR GET INTO A DITCH OR CULVERT.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 6, 8:01 PM CDTSevere Thunderstorm WarningTSAOsage59 min
Apr 6, 9:02 PM CDTSevere Thunderstorm WarningTSAOkfuskee43 min
Apr 6, 9:04 PM CDTSevere Thunderstorm WarningTSAOsage41 min
Apr 6, 9:39 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Okmulgee51 min
Apr 6, 9:39 PM CDTSevere Thunderstorm WarningTSAPittsburg51 min
Apr 6, 9:42 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee63 min
Apr 6, 10:29 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg46 min
Apr 6, 10:38 PM CDTSevere Thunderstorm WarningTSAHaskell, Muskogee37 min
Apr 6, 10:51 PM CDTSevere Thunderstorm WarningTSASequoyah39 min
Apr 6, 11:04 PM CDTSevere Thunderstorm WarningTSALatimer41 min
Apr 6, 11:08 PM CDTSevere Thunderstorm WarningTSALatimer52 min
Apr 6, 11:11 PM CDTSevere Thunderstorm WarningTSAPittsburg64 min
Apr 6, 11:17 PM CDTSevere Thunderstorm WarningTSAHaskell, LeFlore43 min
Apr 6, 11:18 PM CDTSevere Thunderstorm WarningTSAPittsburg57 min
Apr 6, 11:25 PM CDTSevere Thunderstorm WarningTSAAdair50 min
Apr 6, 11:32 PM CDTSevere Thunderstorm WarningTSASequoyah28 min
Apr 6, 11:39 PM CDTSevere Thunderstorm WarningTSALatimer, Pushmataha36 min
Apr 6, 11:44 PM CDTTornado WarningTSAPittsburg, Pushmataha46 min
Apr 6, 11:54 PM CDTSevere Thunderstorm WarningTSALeFlore66 min
Apr 6, 11:57 PM CDTSevere Thunderstorm WarningTSATulsa33 min
Apr 7, 12:13 AM CDTSevere Thunderstorm WarningTSAOsage62 min
Apr 7, 12:25 AM CDTSevere Thunderstorm WarningTSAWagoner50 min
Apr 7, 12:30 AM CDTSevere Thunderstorm WarningTSAPushmataha30 min

Nearby

Tornado Warnings in Oklahoma, 1998Every tornado warning in 1998Tornadoes 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; the sounding from the Mesonet's radiosonde archive.