Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 607, NWS Norman, OK

November 9, 1998Cotton County, Tillman County, Oklahoma; Wichita County, Wilbarger County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Nov 9, 1998, 7:46 PM CST for Cotton County, Tillman County, Oklahoma; Wichita County, Wilbarger County, Texas. It was in force for 44 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Nov 9, 1998, 7:46 PM CST (01:46 UTC)
Expired
Nov 9, 1998, 8:30 PM CST
In force
44 min
Issued by
NWS Norman, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Cotton County, OK, Tillman County, OK, Wichita County, TX, Wilbarger County, TX

What was reported inside it

TimeReportWhereRemark
Nov 9, 7:52 PM CSTThunderstorm WindElectra, TX

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

Norman, OK (KOUN), launched 00:00Z, 1.8 hours before the alert went out and 167 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 00:00Z on 1998-11-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1298 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 00:00Z on 1998-11-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 359 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
1298 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
834 m above ground
0-6 km bulk shear
89 kt
0-1 km storm-relative helicity
359 m²/s²
0-3 km storm-relative helicity
378 m²/s²
Significant tornado parameter
2.0
Supercell composite
4.4

Open this sounding in Storm Lab

The text

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

235 
WUUS1 KOKC 100154 RRA
SVROKC
OKC031-033-141-TXC485-487-100230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
746 PM CST MON NOV 9 1998

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
     WESTERN COTTON COUNTY IN SOUTHWEST OKLAHOMA
     EASTERN TILLMAN COUNTY IN SOUTHWEST OKLAHOMA
     WESTERN COMANCHE COUNTY IN SOUTHWEST OKLAHOMA
     SOUTHEASTERN WILBARGER COUNTY IN WESTERN NORTH TEXAS
     WESTERN WICHITA COUNTY IN WESTERN NORTH TEXAS

* UNTIL 830 PM CST

* AT 746 PM CST DOPPLER RADAR INDICATED A LINE OF SEVERE 
THUNDERSTORMS FROM NEAR SADDLE MOUNTAIN TO INDIAHOMA TO HOLLISTER TO 
GRAYBACK...MOVING EAST AT 45 MILES PER HOUR.  WINDS TO 65 MPH WERE 
REPORTED IN FREDERICK AT 732 PM.

* LOCATIONS IN THE WARNING INCLUDE MAGNOLIA...GRAYBACK...ELECTRA...
  MEERS...MEDICINE PARK...LOVELAND...INDIAHOMA...HOLLISTER...
  GRANDFIELD...FAXON...DEVOL...CHATTANOOGA AND CACHE

HAIL UP TO THE SIZE OF DIMES AND WIND GUSTS TO AT LEAST 65 MPH ARE 
LIKELY. SEEK SHELTER INDOORS...AWAY FROM WINDOWS...AND AVOID 
ELECTRICAL APPLIANCES AND TELEPHONES.

LAT...LON 3388 9933 3386 9886 3435 9846 3488 9841
          3484 9881 3455 9884

&

$$

24

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 9, 6:14 PM CSTSevere Thunderstorm WarningOUNAlfalfa31 min
Nov 9, 6:46 PM CSTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Grant, Major44 min
Nov 9, 7:30 PM CSTSevere Thunderstorm WarningOUNBlaine, Garfield, Kingfisher45 min
Nov 9, 7:30 PM CSTSevere Thunderstorm WarningOUNGrant, Kay45 min
Nov 9, 7:46 PM CSTSevere Thunderstorm WarningOUNComanche44 min
Nov 9, 7:47 PM CSTSevere Thunderstorm WarningOUNCaddo, Canadian43 min
Nov 9, 7:57 PM CSTSevere Thunderstorm WarningOUNLogan, Noble, Payne63 min
Nov 9, 8:07 PM CSTSevere Thunderstorm WarningOUNComanche, Cotton38 min
Nov 9, 8:13 PM CSTSevere Thunderstorm WarningOUNKay47 min
Nov 9, 8:18 PM CSTSevere Thunderstorm WarningOUNGrady42 min
Nov 9, 8:18 PM CSTSevere Thunderstorm WarningOUNKingfisher27 min
Nov 9, 8:26 PM CSTSevere Thunderstorm WarningOUNCanadian, Oklahoma34 min
Nov 9, 8:26 PM CSTSevere Thunderstorm WarningOUNJefferson, Stephens64 min
Nov 9, 8:53 PM CSTSevere Thunderstorm WarningOUNLincoln, Logan, Noble, Payne52 min
Nov 9, 8:53 PM CSTSevere Thunderstorm WarningOUNCanadian, Cleveland, McClain, Oklahoma52 min
Nov 9, 8:53 PM CSTSevere Thunderstorm WarningOUNGarvin52 min
Nov 9, 9:20 PM CSTSevere Thunderstorm WarningOUNPottawatomie40 min
Nov 9, 9:26 PM CSTSevere Thunderstorm WarningOUNCarter, Murray49 min
Nov 9, 9:26 PM CSTSevere Thunderstorm WarningOUNJefferson49 min
Nov 9, 9:44 PM CSTSevere Thunderstorm WarningOUNPontotoc, Seminole46 min
Nov 9, 10:08 PM CSTSevere Thunderstorm WarningOUNCarter, Johnston22 min
Nov 9, 10:21 PM CSTSevere Thunderstorm WarningOUNAtoka, Coal, Johnston54 min
Nov 9, 10:21 PM CSTSevere Thunderstorm WarningOUNHughes54 min
Nov 9, 8:07 PM CSTSevere Thunderstorm WarningOUNArcher, Baylor, Wichita38 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1998Severe Thunderstorm Warnings in Texas, 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.