Alert archive / Wisconsin / Tornado Warnings in 1992

Tornado Warning 1, NWS La Crosse, WI

April 20, 1992Vernon County, Wisconsin

NWS La Crosse, WI issued this tornado warning at Apr 20, 1992, 7:20 PM CDT for Vernon County, Wisconsin. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Apr 20, 1992, 7:20 PM CDT (00:20 UTC)
Expired
Apr 20, 1992, 8:00 PM CDT
In force
40 min
Issued by
NWS La Crosse, WI
Area
Whole counties

County Vernon County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.3 hours before the alert went out and 240 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, Green Bay/Straub, WI at 00:00Z on 1992-04-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 33 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, Green Bay/Straub, WI at 00:00Z on 1992-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 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
33 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
584 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLSE 210020
TORLSE
WIC123-210100-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
720 PM CDT MON APR 20 1992
 
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  800 PM CDT
    FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST WISCONSIN
 
   ...VERNON COUNTY
 
 
AT 720 VERNON COUNTY SHERRIFF REPORTED A POSSIBLE TORNADO 2 MILES
WEST OF HILLSBORO...OR 45 MILES SOUTHEAST OF LA CROSSE
 
THE TORMADO WAS MOVING WEST AT 30 MILES AN HOUR AND WILLLIKELY AFFECT
DILLY AROUND 730 PM.
 
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.
 
INGRAM
 
NNNN

Nearby

Tornado Warnings in Wisconsin, 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; the sounding from the Mesonet's radiosonde archive.