Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 8, NWS La Crosse, WI

July 11, 1994Vernon County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Jul 11, 1994, 4:15 PM CDT for Vernon County, Wisconsin. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Jul 11, 1994, 4:15 PM CDT (21:15 UTC)
Expired
Jul 11, 1994, 5:15 PM CDT
In force
60 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 12:00Z, 9.3 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 12:00Z on 1994-07-11Temperature 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, Green Bay/Straub, WI at 12:00Z on 1994-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.193958Sfc1 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
1083 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
126 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 
WUUS1 KLSE 112115
SVRARX
WIC123-112215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
415 PM CDT MON JUL 11 1994
 
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST WISCONSIN
 
   ...VERNON COUNTY
 
AT 415 PM...READAR INDICATED A SEVERE THUNDERSTORM NEAR STODDARD...
OF ABOUT 10 MILES SOUTH OF LA CROSSE. THE STORM WAS MOVING EAST
AT 20 MILES AN HOUR AND WILL BE AFFECTING THE CHASEBURG...COON VALLEY
...AND WESTBY AREAS BETWEEN 415 AND 515 PM.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
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, Jul 11, 3:05 PM CDT, 1 hour 10 minutes before
WIZ041-112100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
305 PM CDT MON JUL 11 1994

TEST...TEST...TEST

THIS IS A COMMUNCIATIONS TEST ONLY.

BRUCE

NNNN
Special weather statement, Jul 11, 4:11 PM CDT, 4 minutes before
MNZ096-112215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROCHESTER MN
411 PM CDT MON JUL 11 1994

...STRONG THUNDERSTORMS DEVELOPING IN HOUSTON COUNTY....

AT 410PM...RADAR INDICATED STRONG THUNDERSTORMS DEVELOPING IN
HOUSTON COUNTY BETWEEN LA CRESENT AND CALEDONIA. AT 400PM HEAVY RAINS
AND SOME SMALL HAIL HAD FALLING IN THE CITY OF CALEDONIA. THESE
STORMS WERE MOVING TO THE EAST AT 15 TO 20 MPH AND SHOULD BE IN
WISCONSIN BY 445PM.

JT
Special weather statement, Jul 11, 4:12 PM CDT, 3 minutes before
MNZ096-112215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROCHESTER MN
411 PM CDT MON JUL 11 1994

...STRONG THUNDERSTORMS DEVELOPING IN HOUSTON COUNTY....

AT 410PM...RADAR INDICATED STRONG THUNDERSTORMS DEVELOPING IN
HOUSTON COUNTY BETWEEN LA CRESENT AND CALEDONIA. AT 400PM HEAVY RAINS
AND SOME SMALL HAIL HAD FALLING IN THE CITY OF CALEDONIA. THESE
STORMS WERE MOVING TO THE EAST AT 15 TO 20 MPH AND SHOULD BE IN
WISCONSIN BY 445PM.

JTR

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 4:33 PM CDTSevere Thunderstorm WarningARXMonroe57 min
Jul 11, 5:14 PM CDTSevere Thunderstorm WarningARXCrawford31 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.