Alert archive / Oklahoma / Tornado Warnings in 1992

Tornado Warning 13, NWS Norman, OK

April 18, 1992Jackson County, Oklahoma

NWS Norman, OK issued this tornado warning at Apr 18, 1992, 7:39 PM CDT for Jackson County, Oklahoma. It was in force for 33 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: Apr 18, 1992, 7:39 PM CDT (00:39 UTC)
Expired: Apr 18, 1992, 8:12 PM CDT
In force: 33 min
Issued by: NWS Norman, OK
Area: Whole counties

County Jackson County, OK

What was reported inside it

Time	Report	Where
Apr 18, 7:52 PM CDT	Hail 2.75	Jackson, OK
Apr 18, 8:03 PM CDT	Hail 4.5	Jackson, OK
Apr 18, 8:13 PM CDT	Hail 2.75	Jackson, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.7 hours before the alert went out and 197 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 993 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 865 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 132 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOKC 190041
TOROKC
OKC065-190130-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
739 PM CDT SAT APR 18 1992
 
THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  830 PM CDT
FOR THE FOLLOWING OKLAHOMA LOCATIONS...
 
IN SOUTHWEST OKLAHOMA
 
   ...WESTERN JACKSON COUNTY
 
AT 739 RADAR INDICATED A LARGE POTENTIALLY TORNADIC STORM 9 MILES
NORTHWEST OF ELDORADO MOVING SOUTHEAST AT 20 MPH. ELDORADO IS IN THE
PATH OF THIS STORM.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 7:02 PM CDT	Severe Thunderstorm Warning	OUN	Greer	58 min
Apr 18, 7:21 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Roger Mills	54 min
Apr 18, 7:29 PM CDT	Tornado Warning	OUN	Harmon	43 min
Apr 18, 7:52 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	38 min
Apr 18, 8:03 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	42 min
Apr 18, 8:45 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	45 min
Apr 18, 9:29 PM CDT	Severe Thunderstorm Warning	OUN	Washita	46 min
Apr 18, 9:32 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	43 min
Apr 18, 9:51 PM CDT	Severe Thunderstorm Warning	OUN	Grady	54 min
Apr 18, 10:13 PM CDT	Severe Thunderstorm Warning	OUN	Carter	47 min
Apr 18, 10:49 PM CDT	Severe Thunderstorm Warning	OUN	McClain	41 min
Apr 19, 1:29 AM CDT	Severe Thunderstorm Warning	OUN	Greer	46 min
Apr 19, 2:55 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland	35 min
Apr 19, 3:13 AM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	47 min

Nearby

Tornado Warnings in Oklahoma, 1992 Every tornado warning in 1992 Tornadoes in 1992

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.