Alert archive / Oklahoma / Tornado Warnings in 1998

Tornado Warning 13, NWS Tulsa, OK

May 6, 1998McIntosh County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 6, 1998, 6:29 PM CDT for McIntosh County, Oklahoma. It was in force for 61 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
May 6, 1998, 6:29 PM CDT (23:29 UTC)
Expired
May 6, 1998, 7:30 PM CDT
In force
61 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County McIntosh County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.5 hours before the alert went out and 158 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, Norman, OK at 12:00Z on 1998-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 213 joules per kilogram.LCLLFCEL10008507005003002001001 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, Norman, OK at 12:00Z on 1998-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -116 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
213 J/kg
Mixed-layer CIN
-295 J/kg
Mixed-layer LCL
1070 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
-116 m²/s²
0-3 km storm-relative helicity
32 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.5

Open this sounding in Storm Lab

The text

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

541 
WFUS54 KTSA 062331 RRA
TORTUL
OKC091-070030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
629 PM CDT WED MAY 6 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...

  EASTERN MCINTOSH COUNTY - EAST CENTRAL OKLAHOMA

* UNTIL 730 PM CDT

* AT 628 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 3 MILES SOUTHWEST OF
  WAINWRIGHT. A TORNADO COULD FORM AT ANY TIME AS THIS STORM MOVES
  EAST AT 25 MPH.

* THE FOLLOWING LOCATIONS ARE NEAR THE PATH OF THIS STORM...
  RURAL AREAS ALONG THE MUSKOGEE AND MCINTOSH COUNTY BORDERS

LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS WILL ALSO ACCOMPANY
THIS STORM. MOVE TO A SAFE PLACE IMMEDIATELY

THE SAFEST PLACE IN A TORNADO IS BELOW GROUND. IF A BASEMENT OR
STORM CELLAR IS NOT AVAILABLE...GO TO A SMALL INTERIOR ROOM ON THE
LOWEST FLOOR. GET UNDER SOMETHING STURDY AND USE BLANKETS AND
PILLOWS TO PROTECT YOUR HEAD AND BODY FROM FLYING DEBRIS. AVOID
WINDOWS AND LARGE ROOMS. ABANDON MOBILE HOMES AND AUTOMOBILES FOR
MORE SUBSTANTIAL SHELTER. AS A LAST RESORT TAKE COVER IN A DITCH.

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 1:56 AM CDTSevere Thunderstorm WarningTSAAdair49 min
May 6, 2:42 AM CDTSevere Thunderstorm WarningTSALeFlore48 min
May 6, 3:26 AM CDTSevere Thunderstorm WarningTSALeFlore34 min
May 6, 3:56 AM CDTFlash Flood WarningTSALeFlore2 hr
May 6, 3:59 AM CDTSevere Thunderstorm WarningTSALeFlore46 min
May 6, 4:41 PM CDTSevere Thunderstorm WarningTSAOkfuskee49 min
May 6, 5:07 PM CDTSevere Thunderstorm WarningTSACreek, Okmulgee53 min
May 6, 5:26 PM CDTSevere Thunderstorm WarningTSAMuskogee64 min
May 6, 5:41 PM CDTTornado WarningTSAOkmulgee49 min
May 6, 5:49 PM CDTSevere Thunderstorm WarningTSAWagoner56 min
May 6, 5:55 PM CDTSevere Thunderstorm WarningTSACreek, Tulsa65 min
May 6, 6:06 PM CDTSevere Thunderstorm WarningTSAMuskogee24 min
May 6, 6:11 PM CDTSevere Thunderstorm WarningTSAOsage, Washington64 min
May 6, 6:14 PM CDTTornado WarningTSAMuskogee46 min
May 6, 6:20 PM CDTTornado WarningTSANowata, Washington40 min
May 6, 6:36 PM CDTSevere Thunderstorm WarningTSACherokee54 min
May 6, 6:38 PM CDTSevere Thunderstorm WarningTSACraig52 min
May 6, 6:43 PM CDTSevere Thunderstorm WarningTSAMayes, Rogers, Wagoner77 min
May 6, 6:54 PM CDTFlash Flood WarningTSATulsa3 hr
May 6, 6:59 PM CDTSevere Thunderstorm WarningTSACreek61 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.