Alert archive / Louisiana / Tornado Warnings in 1992

Tornado Warning 10, NWS Shreveport, LA

May 11, 1992Bossier Parish, Caddo Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at May 11, 1992, 11:29 PM CDT for Bossier Parish, Caddo Parish, Louisiana. It was in force for 56 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 11, 1992, 11:29 PM CDT (04:29 UTC)
Expired: May 12, 1992, 12:25 AM CDT
In force: 56 min
Issued by: NWS Shreveport, LA
Area: Whole counties

Counties Bossier Parish, LA, Caddo Parish, LA

What was reported inside it

Time	Report	Where	Remark
May 12, 12:15 AM CDT	Hail 1	Bossier, 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

Longview/Gregg, TX (KGGG), launched 00:00Z, 4.5 hours before the alert went out and 86 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: 1833 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 924 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 319 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 8.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 120436
TORSHV
LAC015-017-TXC183-120530-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1129 PM CDT MON MAY 11 1992
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1230 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS..
 
IN NORTHWEST LOUISIANA
 
   ...BOSSIER PARISH...CADDO PARISH
 
IN NORTHEAST TEXAS
 
   ...GREGG COUNTY
 
AT 1130 PM WEATHER RADAR IN SHREVEPORT INDICATED TWO SEVERE STORMS
WITH POSSIBLE TORNADOES. ONE WAS LOCATED 8 MILES WEST OF WASKOM
AND ONE WAS 6 MILES WEST OF KILGORE. MOVEMENT WAS MOVING EAST AT
25 MPH.
 
TORNADO WARNING REMAINS IN EFFECT FOR HARRISON COUNTY IN NORTHEAST
TEXAS.
 
 
 
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...
O~R 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, May 11, 10:54 PM CDT, 35 minutes before

OKZ040-021-034-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-
002-003-004-005-006-120500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1055 PM CDT MON MAY 11 1992

TORNADO WATCH IN EFFECT FOR NORTHWEST AND NORTHCENTRAL LOUISIANA...
SOUTHWEST ARKANSAS AND NORTHEAST TEXAS.

AT 1045 PM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED
AN AREA OF SHOWERS AND THUNDERSTORMS LOCATED TO THE NORTH AND WEST OF
A LINE FROM TYLER AND KARNACK TEXAS...ON TO RODESSA LOUISIANA...CANFIELD
...STEPHENS AND PRINCETON ARKANSAS. THE HEAVIEST STORMS WERE LOCATED NEAR
MANNING ARKANSAS...TEXARKANA...ATLANTA...HUGHES SPRINGS...LONE STAR...
AND BIG SANDY TEXAS. ANOTHER THUNDERSTORM WAS LOCATED NEAR CAMPBELL
TEXAS.

ISOLATED SHOWERS HAD DEVELOPED DURING THE PAST HOUR NEAR FLORIEN AND
MANY LOUISIANA.
THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE EAST AT 20 MILES
PER HOUR.

THE STRONGER THUNDERSTORMS WERE PRODUCING VERY HEAVY RAINFALL IN
EXCESS OF ONE INCH IN A VERY SHORT TIME...RESULTING IN FLOODING
IN LOW LYING AND FLOOD PRONE AREAS. THESE STORMS WERE ALSO PRODUCING
STRONG WINDS UP TO 45 MILES AN HOUR AND UP TO MARBLE SIZE HAIL.

STAY TUNED FOR FURTHER UPDATES AND POSSIBLE WARNINGS.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 3:42 AM CDT	Flash Flood Warning	SHV	De Soto	3 hr
May 12, 4:58 AM CDT	Severe Thunderstorm Warning	SHV	Winn	32 min

Nearby

Tornado Warnings in Louisiana, 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.