Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 21, NWS La Crosse, WI

August 27, 1994Jackson County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Aug 27, 1994, 7:29 PM CDT for Jackson County, Wisconsin. It was in force for 46 min.

The area

The counties it named.

The facts

Issued
Aug 27, 1994, 7:29 PM CDT (00:29 UTC)
Expired
Aug 27, 1994, 8:15 PM CDT
In force
46 min
Issued by
NWS La Crosse, WI
Area
Whole counties

County Jackson County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.5 hours before the alert went out and 216 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 1994-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1920 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 1994-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 211 square meters per square second.1939587897Sfc1 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
1920 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
879 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
211 m²/s²
0-3 km storm-relative helicity
359 m²/s²
Significant tornado parameter
2.1
Supercell composite
13.8

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KLSE 280029 RRA
SVRLSE
WIC053-121-280115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
729 PM CDT SAT AUG 27 1994
 
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  815 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONSS...
 
IN WEST CENTRAL WISCONSIN
 
   ...WESTERN JACKSON COUNTY...NORTHERN TREMPEALEAU COUNTY
 
AT 728 PM...RADAR INDICATED SEVERE THUNDERSTORMS 40 TO 50 MILES NORTH
OF LA CROSSE NEAR BLAIR AND STRUM. THE STORMS WERE MOVING EAST AT
30 MILES AN HOUR...AND WILL AFFECT THE OSSEO...PIGEON FALLS...HIXTON
AND TAYLOR AREAS BETWEEN 740 AND 815 PM.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
BRUCE
 
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 7:29 PM CDTSevere Thunderstorm WarningARXTrempealeau31 min
Aug 27, 8:12 PM CDTSevere Thunderstorm WarningARXBuffalo48 min
Aug 27, 8:18 PM CDTSevere Thunderstorm WarningARXJackson42 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.