Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 1, NWS La Crosse, WI

April 24, 1994Jackson County, Trempealeau County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Apr 24, 1994, 3:52 PM CDT for Jackson County, Trempealeau County, Wisconsin. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Apr 24, 1994, 3:52 PM CDT (20:52 UTC)
Expired
Apr 24, 1994, 5:00 PM CDT
In force
68 min
Issued by
NWS La Crosse, WI
Area
Whole counties

Counties Jackson County, WI, Trempealeau County, WI

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 8.9 hours before the alert went out and 208 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, Minneapolis, MN at 12:00Z on 1994-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Minneapolis, MN at 12:00Z on 1994-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1686 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
140 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLSE 242052
SVRLSE
WIC053-121-242200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
352 PM CDT SUN APR 24 1994
 
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM CDT
    FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL WISCONSIN
 
   ...SOUTHERN JACKSON COUNTY...SOUTHERN TREMPEALEAU COUNTY
 
AT 358 PM...RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF
ETTRICK...OR 25 MILES NORTH OF LA CROSSE. THE STORM WAS MOVING EAST
AT 30 MILES AN HOUR. SOME CITIES AND TOWNS IN THE PATH OF THIS STORM
INCLUDE ETTRICK AND MELROSE.
 
 
SEVERE THUNDERSTORMS SOMETIMES PRODUCE TORNADOS WITH LIT(TLE OR
NO WARNING.  MOVE INDOORS AND BE PREPARED TO QUICKLY GO TO THE
BASEMENT.  LEAVE MOBILE HOMES AND GO TO A STORM SHELTER NOW.
 
BRUCE
 
NNNN

What forecasters said that day

The local office's own words before this severe thunderstorm 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, Apr 24, 11:39 AM CDT, 4 hours 13 minutes before
WIZ032>034-241830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1139 AM CDT SUN APR 24 1994

...SEVERE THUNDERSTORM WATCH FOR THIS AFTERNOON...

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR BUFFALO...TREMPEALEAU
AND JACKSON COUNTIES UNTIL 5 PM.

AT 1135 AM CDT NO THUNDERSTORMS WERE IN OR NEAR THE WATCH AREA.
THUNDERSTORMS ARE EXPECTED TO DEVELOP OR MOVE INTO THE AREA THIS
AFTERNOON AND COULD BECOME SEVERE. LARGE HAIL...DAMAGING WINDS...AND
DEADLY LIGHTNING WILL BE POSSIBLE WITH THESE STORMS.

IF YOU LIVE IN AREAS NORTH OF LA CROSSE NOW IS THE TIME TO PLAN WHAT
TO DO IF A SEVERE THUNDERSTORM APPROACHES OR A WARNING IS ISSUED. THE
SAFEST PLACE IS INSIDE AND IN THE BASEMENT IF ONE IS AVAILABLE.

COUCH
Special weather statement, Apr 24, 12:53 PM CDT, 2 hours 59 minutes before
WIZ032>034-241845-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1253 PM CDT SUN APR 24 1994

...SEVERE THUNDERSTORM WATCH FOR THIS AFTERNOON...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR BUFFALO
TREMPEALEAU AND JACKSON COUNTIES UNTIL 5 PM.

STRONG THUNDERSTORMS WERE OCCURING IN NORTHWEST WISCONSIN BUT WERE
WELL NORTH AND WEST OF THE LA CROSSE AREA.

STILL THUNDERSTORMS COULD DEVELOP OR MOVE INTO THE WATCH AREAS NORTH
OF LA CROSSE. IF A THUNDERSTORM APPROACHES OR A WARNING IS ISSUED
GO INDOORS AND REMAIN THERE UNTIL THE STORM PASSES.THE SAFEST PLACE
IS IN THE BASEMENT IF ONE IS AVAILABLE.

COUCH

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 24, 4:27 PM CDTSevere Thunderstorm WarningARXMonroe63 min
Apr 24, 5:23 PM CDTTornado WarningARXMonroe37 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1994Every severe thunderstorm warning in 1994

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.