Alert archive / Oklahoma / Tornado Warnings in 1998

Tornado Warning 27, NWS Tulsa, OK

May 24, 1998Nowata County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 24, 1998, 9:34 PM CDT for Nowata County, Oklahoma. It was in force for 41 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
May 24, 1998, 9:34 PM CDT (02:34 UTC)
Expired
May 24, 1998, 10:15 PM CDT
In force
41 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Nowata County, OK

The radar

The Tulsa radar (KINX), 70 km from the middle of the area, began a volume at 02:36 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
May 24, 9:35 PM CDTHail 0.88South Coffeyville, 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.

IssuedProductOfficeLasted
May 24, 8:15 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.6 hours before the alert went out and 162 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 1998-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 895 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, Springfield, MO at 00:00Z on 1998-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 square meters per square second.193958Sfc1 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
895 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
1916 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
247 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.7

Open this sounding in Storm Lab

The text

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

471 
WFUS54 KTSA 250236 RRA
TORTUL
OKC105-250315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
934 PM CDT SUN MAY 24 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...

  NORTHERN NOWATA COUNTY - NORTHEASTERN OKLAHOMA

* UNTIL 1015 PM CDT

* AT 933 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 1 MILE SOUTHWEST OF SOUTH
  COFFEYVILLE. A TORNADO COULD FORM AT ANY TIME AS THIS STORM MOVES
  EAST AT 20 MPH.

* THE FOLLOWING LOCATIONS ARE NEAR THE PATH OF THIS STORM...
  SOUTH COFFEYVILLE

TAKE SHELTER NOW DONT WAIT UNTIL YOU SEE OR HEAR IT COMING MOVE
TO AN UNDERGROUND SHELTER OR TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR.

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 24, 8:53 PM CDTTornado WarningTSAOsage52 min
May 24, 9:12 PM CDTSevere Thunderstorm WarningTSANowata63 min
May 24, 9:40 PM CDTTornado WarningTSAOsage65 min
May 24, 9:53 PM CDTSevere Thunderstorm WarningTSACraig37 min
May 24, 10:43 PM CDTTornado WarningTSAOsage62 min
May 24, 10:57 PM CDTSevere Thunderstorm WarningTSACraig48 min
May 24, 11:25 PM CDTSevere Thunderstorm WarningTSANowata, Washington50 min
May 24, 11:46 PM CDTSevere Thunderstorm WarningTSAOsage44 min
May 25, 12:13 AM CDTFlash Flood WarningTSAOsage2 hr
May 25, 12:19 AM CDTSevere Thunderstorm WarningTSACraig41 min
May 25, 12:32 AM CDTSevere Thunderstorm WarningTSAOsage43 min
May 25, 12:43 AM CDTSevere Thunderstorm WarningTSADelaware, Ottawa47 min
May 25, 1:12 AM CDTSevere Thunderstorm WarningTSAOsage, Washington48 min
May 25, 1:31 AM CDTSevere Thunderstorm WarningTSANowata, Rogers44 min
May 25, 2:25 AM CDTSevere Thunderstorm WarningTSAMayes50 min
May 25, 2:54 AM CDTSevere Thunderstorm WarningTSADelaware36 min
May 25, 4:10 AM CDTSevere Thunderstorm WarningTSAOsage, Pawnee50 min
May 25, 4:59 AM CDTSevere Thunderstorm WarningTSAOsage, Pawnee46 min
May 25, 6:01 AM CDTSevere Thunderstorm WarningTSATulsa44 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; radar from the NEXRAD Level II archive.