Alert archive / Louisiana / Tornado Warnings in 1992

Tornado Warning 30, NWS Shreveport, LA

November 21, 1992Tensas Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Nov 21, 1992, 9:52 PM CST for Tensas Parish, Louisiana. It was in force for 68 min. 2 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
Nov 21, 1992, 9:52 PM CST (03:52 UTC)
Expired
Nov 21, 1992, 11:00 PM CST
In force
68 min
Issued by
NWS Shreveport, LA
Area
Whole counties

County Tensas Parish, LA

What was reported inside it

TimeReportWhereRemark
Nov 21, 9:58 PM CSTTornado F3Tensas, LA
Nov 21, 10:18 PM CSTTornado F2Tensas, LA

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

Jackson, MS (KJAN), launched 00:00Z, 3.9 hours before the alert went out and 124 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, Jackson, MS at 00:00Z on 1992-11-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 642 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, Jackson, MS at 00:00Z on 1992-11-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.19395878Sfc1 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
642 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
1047 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 220352
TORSHV
LAC107-220500-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
952 PM CST SAT NOV 21 1992
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1100 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST LOUISIANA
 
   ...TENSAS PARISH
 
AT 947 PM CST THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT INDICATED
A POSSIBLE TORNADO 15 MILES WEST SOUTHWEST OF ST JOSEPH LOUISIANA...OR
20 MILES SOUTHWEST OF NEWELLTON LOUISIANA. THIS TORNADO IS PART OF A
VERY SEVERE THUNDERSTORM WHICH IS LIKELY PRODUCING LARGE HAIL AND
DAMAGING WINDS.
 
A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEAST FRANKLIN
PARISH UNTIL 1015 PM CST.
 
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 FHLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Nov 21, 3:58 PM CST, 5 hours 54 minutes before
OKZ040-021-034-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-
002-003-004-005-006-212300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
400 PM CST SAT NOV 21 1992

...SEVERE STORMS LIKELY OVER THE SOUTHEAST HALF OF THE ARKLATEX LATE
THIS AFTERNOON AND TONIGHT...A TORNADO WATCH HAS BEEN ISSUED FOR A LARGE
PART OF LOUISIANA UNTIL 1100 PM CST...

THE MOST FAVORABLE AREA FOR SEVERE STORMS AND POSSIBLE TORNADOES WILL
BE OVER THE SOUTHEAST HALF OF THE ARKLATEX AS NEW STORMS DEVELOP RAPIDLY
AHEAD OF AN EASTWARD MOVING INCREASING LINE OF THUNDERSTORMS OVER
EASTERN TEXAS AT 4 PM CST.

AT 4 PM CST THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED  A
BAND OF INCREASING SHOWERS AND THUNDERSTORMS FROM NEAR DEQUEEN ARKANSAS
SOUTH TO NEAR CLARKSVILLE TEXAS ON TO NEAR LONGVIEW AND ON TO HOUSTON
TEXAS. SEVERE STORMS HAVE ALREADY OCCURRED IN THE HOUSTON AREA THIS
AFTERNOON WITH TORNADOES REPORTED IN THE HOUSTON METROPOLITAN AREA.
THE STRONGEST STORMS IN EAST TEXAS WERE LOCATED FROM NEAR LONGVIEW TO
NACOGDOCHES TEXAS. THE SYSTEM CONTINUES TO MOVE TO THE EAST AT 15 TO 20
MPH...WHILE INDIVIDUAL THUNDERSTORMS WERE MOVING THE THE NORTHEAST AT
35 MPH.

AS THIS BAND MOVES EASTWARD...STORMS WILL CONTINUE TO INCREASE...ALSO
CONDITIONS ARE FAVORABLE FOR THUNDERSTORMS TO DEVELOP RAPIDLY AHEAD
OF THE OLD BAND ACROSS EAST CENTRAL TEXAS AND WESTERN LOUISIANA.

BESIDES THE THREAT OF SEVERE STORMS...LOCALIZED FLOODING MAY DEVELOP WITH
THE PASSAGE OF THE THUNDERSTORMS...HOWEVER AREA STREAMS REMAIN BELOW
NORMAL FOR THIS TIME OF YEAR. EXCEPT IN URBAN ARAS ANY FLOODING WOULD
BE SLOW TO DEVELOP.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 21, 7:27 PM CSTSevere Thunderstorm WarningSHVNatchitoches48 min
Nov 21, 7:58 PM CSTSevere Thunderstorm WarningSHVMorehouse, West Carroll62 min
Nov 21, 9:15 PM CSTSevere Thunderstorm WarningSHVFranklin, Tensas60 min

Nearby

Tornado Warnings in Louisiana, 1992Every tornado warning in 1992Tornadoes 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.