Alert archive / Oklahoma / Tornado Warnings in 1998

Tornado Warning 3, NWS Tulsa, OK

March 30, 1998Sequoyah County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Mar 30, 1998, 6:54 PM CST for Sequoyah County, Oklahoma. It was in force for 51 min. 3 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
Mar 30, 1998, 6:54 PM CST (00:54 UTC)
Expired
Mar 30, 1998, 7:45 PM CST
In force
51 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Sequoyah County, OK

What was reported inside it

TimeReportWhereRemark
Mar 30, 7:20 PM CSTHail 0.88Vian, OK
Mar 30, 7:31 PM CSTThunderstorm Wind 52Sallisaw, OKCar blown off Interstate 40
Mar 30, 7:50 PM CSTThunderstorm WindGans, OKSeveral large tree limbs down

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, 0.9 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 1998-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 368 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 1998-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 247 square meters per square second.1939587897Sfc1 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
368 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
1388 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
247 m²/s²
0-3 km storm-relative helicity
389 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 310054 RRA
TORTUL
OKC135-310145-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
654 PM CST MON MAR 30 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 745 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN EAST CENTRAL OKLAHOMA

   ...NORTHWESTERN SEQUOYAH COUNTY

DOPPLER RADAR SHOWED A DEVELOPING TORNADO 3 MILES NORTHWEST OF
WEBBERS FALLS MOVING NORTHEAST AT 50 MPH.

THIS STORM WILL PASS NORTH OF GORE AFFECTING PARADISE HILL AND THE
SOUTHERN END OF TENKILLER LAKE.


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 WINDOWS 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
Mar 30, 6:14 PM CSTSevere Thunderstorm WarningTSAMuskogee46 min
Mar 30, 6:23 PM CSTTornado WarningTSAMcIntosh37 min
Mar 30, 6:32 PM CSTSevere Thunderstorm WarningTSAPushmataha43 min
Mar 30, 6:40 PM CSTSevere Thunderstorm WarningTSAHaskell, Latimer50 min
Mar 30, 6:46 PM CSTTornado WarningTSACherokee, Muskogee44 min
Mar 30, 6:51 PM CSTSevere Thunderstorm WarningTSASequoyah39 min
Mar 30, 6:53 PM CSTSevere Thunderstorm WarningTSAPittsburg52 min
Mar 30, 7:26 PM CSTTornado WarningTSAAdair, Cherokee49 min
Mar 30, 7:30 PM CSTSevere Thunderstorm WarningTSALatimer, LeFlore, Pushmataha45 min
Mar 30, 7:30 PM CSTSevere Thunderstorm WarningTSAHaskell45 min
Mar 30, 7:33 PM CSTTornado WarningTSASequoyah42 min
Mar 30, 7:38 PM CSTSevere Thunderstorm WarningTSADelaware52 min
Mar 30, 7:58 PM CSTSevere Thunderstorm WarningTSAOttawa32 min
Mar 30, 8:12 PM CSTSevere Thunderstorm WarningTSALeFlore48 min
Mar 30, 8:53 PM CSTSevere Thunderstorm WarningTSALeFlore22 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.