Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 1, NWS La Crosse, WI

June 12, 1990Trempealeau County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Jun 12, 1990, 5:15 PM CDT for Trempealeau County, Wisconsin. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
Jun 12, 1990, 5:15 PM CDT (22:15 UTC)
Expired
Jun 12, 1990, 5:50 PM CDT
In force
35 min
Issued by
NWS La Crosse, WI
Area
Whole counties

County Trempealeau County, WI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 10.3 hours before the alert went out and 188 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 1990-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 966 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, Minneapolis, MN at 12:00Z on 1990-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 187 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
966 J/kg
Mixed-layer CIN
-164 J/kg
Mixed-layer LCL
781 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
187 m²/s²
0-3 km storm-relative helicity
191 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Jun 12, 1:01 PM CDT, 4 hours 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
100 PM CDT TUE JUN 12 1990

...TORNADO WATCH FOR WEST CENTRAL WISCONSIN AND ADJACENT AREAS
OF SOUTHEAST MINNESOTA UNTIL 8 PM...

AT 1255 PM...NO PRECIPITATION WAS BEING DETECTED IN THE LA CROSSE
...TRI STATE...AREA.  HOWEVER...A LINE OF THUNDERSTORMS CONTINUED
TO DEVELOP FROM NORTHWEST WISCONSIN...ACROSS SOUTHEAST MINNESOTA
WEST OF ROCHESTER...AND INTO NORTH CENTRAL IOWA.

THE LINE WAS MOVING EAST AT 30 MILES AN HOUR...AND AT ITS CURRENT
SPEED WOULD REACH THE LA CROSSE...AND BLACK RIVER FALLS...AREAS
BETWEEN 330 AND 430 PM. THUNDERTORMS COULD REACH ALMA AND MONDOVI BY
AS EARLY AS 2 PM.

PEOPLE IN THE LA CROSSE...TRI STATE...AREA ARE URGED TO MONITOR
WEATHER RADIO...OR COMMERCIAL RADIO AND TV...FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

BRUCE
Special weather statement, Jun 12, 1:56 PM CDT, 3 hours 19 minutes before
WIZ010-014-122130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
155 PM CDT TUE JUN 12 1990

...TORNADO WATCH FOR WEST CENTRAL WISCONSIN AND SOUTHEAST MINNESOTA
UNTIL 8 PM...

AT 150 PM...A LINE OF SHOWERS AND THUNDERSTORMS CONTINUED FROM
NORTHWEST WISCONSIN...ACROSS SOUTHEAST MINNESOTA...AND INTO EXTREME
NORTH CENTRAL IOWA.  THE LEADING EDGE OF THE LINE EXTENDED FROM
EAU CLAIRE...TO 50 MILES NORTHWEST OF LA CROSSE NEAR ALMA...TO JUST
WEST OF ROCHESTER.  THE STRONGEST STORMS WERE IN THE NORTHERN PART OF
THIS LINE...BUT NO SEVERE WEATHER HAS BEEN REPORTED IN WEST CENTRAL
WISCONSIN OR SOUTHEAST MINNESOTA.

THE NORTHERN PORTION OF THE LINE WAS MOVING EAST AT 30 MILES AN HOUR
...BUT THE SOUTHERN PART OF THE LINE HAD DECREASED IN SPEED TO AROUND
20 MILES AN HOUR.  AS A RESULT...IT NOW APPEARS THAT THUNDERSTORMS
WOULD NOT REACH LA CROSSE BEFORE LATE AFTERNOON.

PEOPLE IN THE LA CROSSE...TRI STATE...AREA ARE URGED TO MOMNITOR
WEATHER RADIO...OR COMMERCIAL RADIO AND TV...FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

BRUCE
Special weather statement, Jun 12, 3:00 PM CDT, 2 hours 15 minutes before
WIZ010-014-122200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
300 PM CDT TUE JUN 12 1990

...TORNADO WATCH FOR WEST CENTRAL WISCONSIN AND SOUTHEAST MINNESOTA
UNTIL 8 PM...

AT 255 PM...SCATTERED SHOWERS AND THUNDERSTORMS WERE INDICATED FROM
FROM WEST CENTRAL WISCONSIN...ACROSS SOUTHEAST MINNESOTA...AND INTO
NORTH CENTRAL IOWA.  THE PRECIPITATION WAS NORTHWEST OF A LINE FROM
40 MILES SOUTHEAST OF EAU CLAIRE...TO 25 MILES WEST OF LA CROSSE
...TO 40 MILES WEST OF DECORAH IOWA.  NO SEVERE WEATHER HAS BEEN
REPORTED WITH THESE STORMS AS THEY MOVE NORTHEAST AT 50 MILES AN
HOUR.

THE LINE OF THUNDERSTORMS THAT WE HAD BEEN WATCHING EARLIER HAD...
FOR THE MOST PART...DISSIPATED.  HOWEVER...SCATTERED SHOWERS AND
THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE TRI STATE REGION
DURING THE REMAINDER OF THE AFTERNOON.

PEOPLE IN THE LA CROSSE...TRI STATE...AREA ARE URGED TO MONITOR
WEATHER RADIO...OR COMMERCIAL RADIO AND TV...FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

BRUCE
Special weather statement, Jun 12, 3:44 PM CDT, 1 hour 31 minutes before
WIZ010-014-122230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
345 PM CDT TUE JUN 12 1990

...TORNADO WATCH FOR WEST CENTRAL WISCONSIN AND SOUTHEAST MINNESOTA
UNTIL 8 PM...AND FOR EXTREME NORTHEAST IOWA UNTIL 1000 PM...

AT 340 PM...A THUNDERSTORM...PRODUCING HEAVY RAIN...WAS 15 MILES
NORTHWEST OF LA CROSSE NEAR TREMPEALEAU.

OTHERWISE...SHOWERS AND THUNDERSTORMS WERE WIDELY SCATTERED FROM
WEST CENTRAL WISCONSIN...ACROSS SOUTHEAST MINNESOTA AND INTO
NORTHEAST IOWA.  THE PRECIPITATION WAS MAINLY NORTHWEST OF A LINE
FROM BLACK RIVER FALLS...TO JUST WEST OF LA CROSSE...TO 10 MILES WEST
OF DECORAH IOWA.

THE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 45 MILES AN
HOUR.

PEOPLE IN THE LA CROSSE...TRI STATE...AREA ARE URGED TO MONITOR
WEATHER RADIO...OR COMMERCIAL RADIO AND TV...FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

BRUCE
Special weather statement, Jun 12, 4:18 PM CDT, 57 minutes before
WIZ010-014-122300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
417 PM CDT TUE JUN 12 1990

...THUNDERSTORMS MOVING INTO THE LA CROSSE AREA...

AT 415 PM...RADAR INDICATED THUNDERSTORMS OVER THE SOUTHEAST CORNER
OF MINNESOTA...ABOUT 15 MILES SOUTHWEST OF LA CROSSE.  THE
THUNDERSTORMS WERE MOVING NORTHEAST AT 45 MILES AN HOUR AND WILL BE
AFFECTING THE CITY OF LA CROSSE BETWEEN 420 AND 515 PM. BRIEF HEAVY
RAIN...AND SMALL HAIL ARE POSSSIBLE WITH THESE STORMS.

PEOPLE IN THE LA CROSSE...TRI STATE...AREA ARE URGED TO MONITOR
WEATHER RADIO...OR COMMERCIAL RADIO AND TV...FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. A TORNADO WATCH REMAINS IN EFFECT FOR
LA CROSSE UNTIL 800 PM.

BRUCE
Special weather statement, Jun 12, 4:49 PM CDT, 26 minutes before
WIZ010-014-122230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
450 PM CDT TUE JUN 12 1990

...TORNADO WATCH FOR WEST CENTRAL WISCONSIN AND SOUTHEAST MINNESOTA
UNTIL 8 PM...AND FOR EXTREME NORTHEAST IOWA UNTIL 1000 PM...

AT 445 PM...THUNDERSTORMS...PRODUCING HEAVY RAIN...WERE JUST
SOUTHEAST OF LA CROSSE...AND 50 MILES NORTHWEST OF LA CROSSE...
BETWEEN ALMA AND OSSEO.

OTHERWISE...SHOWERS AND THUNDERSTORMS WERE SCATTERED ACROSS WEST
CENTRAL WISCONSIN...SOUTHEAST MINNESOTA...AND NORTHEAST IOWA...BUT
NO SEVERE WEATHER HAS BEEN REPORTED.

THE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 45 MILES AN
HOUR...AND WERE INCREASING IN COVERAGE AND INTENSITY.

PEOPLE IN T8HE LA CROSSE...TRI STATE...AREA ARE URGED TO MONITOR
WEATHER RADIO...OR COMMERCIAL RADIO AND TV...FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

BRUCE

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1990Every severe thunderstorm warning in 1990

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.