Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 86, NWS Twin Cities, MN

June 28, 1991Barron County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 28, 1991, 7:33 PM CDT for Barron County, Wisconsin. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Jun 28, 1991, 7:33 PM CDT (00:33 UTC)
Expired
Jun 28, 1991, 8:15 PM CDT
In force
42 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Barron County, WI

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 0.6 hours before the alert went out and 152 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 00:00Z on 1991-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3476 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 00:00Z on 1991-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 385 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
3476 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
941 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
385 m²/s²
0-3 km storm-relative helicity
583 m²/s²
Significant tornado parameter
11.6
Supercell composite
41.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 290033
SVRMSP
WIC005-290115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
733 PM CDT FRI JUN 28 1991

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE WEST CENTRAL PART OF WISCONSIN
      NORTHERN BARRON

AT....725 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM JUST
NORTHWEST OF CUMBERLAND OR 25 MILES WEST..NORTHWEST OF RICE LAKE
WISCONSIN.

THIS SEVERE THUNDERSTORM WAS MOVING EAST..NORTHEAST AT 25 MPH.

SOME CITIES IN THE PATH OF THIS SEVERE THUNDERSTORM ARE HAUGEN..
CUMBERLAND AND AREAS NEAR RICE LAKE.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL..DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON`T DRIVE
INTO AREAS WHERE WA	TER COVERS THE ROAD. ALSO REMEMBER SEVERE
THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING.

JPR

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 28, 6:58 PM CDT, 35 minutes before
MNZ016-012-WIZ006-290100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
655 PM CDT FRI JUN 28 1991

...STRONG THUNDERSTORMS BUILDING ACROSS EAST CENTRAL MINNESOTA AND
NORTHWEST WISCONSIN...

STRONG THUNDERSTORMS HAVE CONTINUED TO DEVELOPE NORTH AND NORTHEAST
OF THE TWIN CITIES ACROSS PARTS OF ISANTI AND CHISAGO COUNTIES OF EASTERN
MINNESOTA INTO POLK AND BURNETT COUNTIES OF NORTHWEST WISCONSIN.

THESE STRONG THUNDERSTORMS WERE LOCATED FROM AROUND RUSH CITY AND
CAMBRIDGE TO NEAR TAYLORS FALLS ON THE MINNESOTA SIDE OF THE ST CROIX
RIVER AND FROM CUSHING TO BALSAM LAKE IN ADJACENT WISCONSIN.

THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING FREQUENT LIGHTNING STRIKES...
STRONG GUSTY WINDS AS WELL AS LOCALLLY VERY HEAVY RAINS AS THEY MOVE
TO THE NORTHEAST AT AROUND 30 MILES AN HOUR.
<
A TORNADO WATCH IS IN EFFECT FOR A PORTION OF EAST CENTRAL MINNESOTA
INTO MUCH OF NORTHWEST WISCONSIN UNTIL MIDNIGHT.
SWANBERG

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1991Every severe thunderstorm warning in 1991

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.