Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 102, NWS Twin Cities, MN

September 1, 1989Pepin County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 1, 1989, 1:56 AM CDT for Pepin County, Wisconsin. It was in force for 34 min.

The area

The counties it named.

The facts

Issued
Sep 1, 1989, 1:56 AM CDT (06:56 UTC)
Expired
Sep 1, 1989, 2:30 AM CDT
In force
34 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Pepin 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 00:00Z, 6.9 hours before the alert went out and 122 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 1989-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 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 1989-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
595 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
290 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 010656
SVRMSP
WIC091-010730-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
156 AM CDT FRI SEP 1 1989
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  230 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN WEST CENTRAL WISCONSIN
          ...PEPIN
 
AT 152 AM...RADAR INDICATED A LINE OF THUNDERSTORMS...WITH THE
LEADING EDGE 10 MILES EAST TO SOUTHEAST OF RED WING MINNESOTA.
THE STORMS WERE MOVING EAST AT 60 MILES AN HOUR...AND WILL
PRODUCE DAMAGING WINDS AS THEY MOVE ACROSS PEPIN COUNTY
THROUGH 230 AM.
 
THIS WARNING INCLUDES ADJACENT AREAS OF THE MISSISSIPPI RIVER
AND LAKE PEPIN.  TOWNS INCLUDED IN THE WARNING ARE PEPIN AND
DURAND.
 
 
 
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 WATER COVERS THE ROAD.
 
TDK

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, Aug 31, 8:49 PM CDT, 5 hours 7 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
848 PM CDT THU AUG 31 1989

...SEVERE THUNDERSTORM WATCH CONTINUES FOR MOST OF SOUTHERN MINNESOTA
AND LARGE PARTS OF WESTERN WISCONSIN UNTIL 10 PM CDT...

...SEVERE THUNDERSTORM WARNING UNTIL 845 PM FOR FARIBAULT AND
EASTERN MARTIN COUNTY OF SOUTH CENTRAL MINNESOTA...

AT 825 PM SHOWERS AND THUNDERSTORMS WERE SCATTERED OVER CENTRAL AND
SOUTHERN MINNESOTA AND EXTENDED INTO WEST WISCONSIN.

THUNDERSTORMS WITH VERY HEAVY RAINS WERE RACING ACROS EXTREME SOUTHERN
MINNESOTA JUST NORTH OF THE IOWA BORDER. THESE VERY HEAVY THUNDERSTORMS
EXTENDED FROM EAST OF FAIRMONT TO NEAR LACROSSE. THESE THUNDERSTORMS
ALSO HAVE HAD A HISTORY OF PRODUCING LARGE HAIL RANGING FROM MARBLE TO
BASEBALL IN DIAMETER.

OTHER SHOWERS AND THUNDERSTORMS WERE ALSO SCATTERED ACROSS CENTRAL AND
SOUTHERN MINNESOTA. AS THESE THUNDERSTORMS MOVE EAST OVER SOME OF THESE
SAME AREAS..LOCALIZED FLOODING MAY BE POSSIBLE.

MOVEMENT CONTINUES EAST AT 40 MILES AN HOUR.
RND
Special weather statement, Aug 31, 9:29 PM CDT, 4 hours 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
925 PM CDT THU AUG 31 1989

...SEVERE THUNDERSTORM WATCH NUMBER 704 CANCELLED FOR SECTIONS OF
   CENTRAL MINNESOTA...

THE SEVERE THUNDERSTORM WATCH NUMBER 704 HAS BEEN CANCELLED IN
MINNESOTA NORTH OF A LINE FROM REDWOOD FALLS TO NORTHFIELD TO
TO LE SUEUR TO REDWOOD FALLS TO CANBY NEAR THE SOUTH DAKOTA BORDER.

THIS SEVERE THUNDERSTORM WATCH IS NO LONGER IN EFFECT FOR THE TWIN
CITIES METROPOLITAN AREA.
WJH
Special weather statement, Aug 31, 11:59 PM CDT, 1 hour 57 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1155PM CDT THU AUG 31 1989

...SEVERE THUNDERSTORM WATCH CANCELLED IN SOUTHWEST MINNESOTA...

THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH
NUMBER 706 IN SOUTHWEST MINNESOTA WEST OF A LINE FROM MANKATO TO
FAIRMONT. THE SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM
FOR SOUTHEAST MINNESOTA.
WJH
Special weather statement, Sep 1, 12:54 AM CDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1253 AM CDT FRI SEP 1 1989

...THUNDERSTORMS WITH TORRENTIAL RAINS ENTERING THE TWIN CITIES...

AT 1250 AM...THUNDERSTORMS WERE PRODUCING VERY HEAVY RAINS OVER
PORTIONS OF CENTRAL AND EAST CENTRAL MINNESOTA.

SOME THUNDERSTORMS WERE PRODUCING RAIN AT SUCH A RATE THAT VISIBILITIES
WERE REDUCED TO NEAR ZERO AT A NUMBER OF LOCATIONS.  THE MOST RECENT
REPORT OF SUCH RAINFALL WAS 1240 AM NEAR ROGERS...OR ABOUT 25 MILES
NORTHWEST OF DOWNTOWN MINNEAPOLIS.

SOME OF THESE AREAS RECEIVED HEAVY RAINS EARLIER TODAY.  THESE STORMS
COULD EASILY CAUSE SOME SMALL STREAM AND URBAN FLOODING.

THIS TYPE OF SITUATION IS ESPECIALLY DANGEROUS AT NIGHT...WHEN MOTORISTS
MAY NOT BE ABLE TO SEE FLOODED ROADWAYS.

THESE STORMS WERE JUST ENTERING THE WESTERN AND NORTHERN PORTIONS OF
THE TWIN CITIES METROPOLITAN AREA...AND WILL MOVE ACROSS THE
TWIN CITIES THROUGH AT LEAST 2 AM.

THERE WILL UNDOUBTEDLY BE SOME UNDERPASSES AROUND THE TWIN CITIES
WHICH WILL FLOOD.  DO NOT DRIVE THROUGH FLOODED AREAS.  BE VERY
CAREFUL OF THIS DANGEROUS SITUATION.

TDK
Special weather statement, Sep 1, 1:15 AM CDT, 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
115 AM CDT FRI SEP 1 1989

...WINDS TO 55 MPH IN THE TWIN CITIES...

AT 108 AM...A WIND GUST TO 52 MPH WAS REGISTERED AT THE NATIONAL
WEATHER SERVICE IN MINNEAPOLIS.

THESE STORMS WILL MOVE ACROSS THE METROPOLITAN AREA THROUGH 2 AM.
WHILE THE STORMS DO NOT AT THIS TIME APPEAR TO BE SEVERE...PEOPLE
AROUND THE AREA SHOULD BE READY TO MOVE TO SAFETY IF THE STORMS
SHOULD BECOME ANY STRONGER.

TDK
Special weather statement, Sep 1, 1:33 AM CDT, 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
130 AM CDT FRI SEP 1 1989

...WINDS TO 55 MPH CAN BE EXPECTED ACROSS THE EASTERNMOST PART OF
THE TWIN CITIES...AND INTO WEST CENTRAL WISCONSIN...

WINDS BETWEEN 50 AND 55 MPH CONTINUE TO BE REPORTED.  AT 125 AM...
THESE WINDS WERE CURRENTLY IN EASTERN RAMSEY...WASHINGTON...AND DAKOTA
COUNTIES...OR JUST ACROSS THE EASTERN AND SOUTHERN SUBURBS OF ST. PAUL.

THE STORMS !ARE POISED TO ENTER WEST CENTRAL WISCONSIN.  PERSONS IN
ST. CROIX...PIERCE...PEPIN...AND DUNN COUNTIES OF WEST CENTRAL WISCONSIN
SHOULD BE ON THE LOOKOUT FOR THESE STORMS...AND BE READY TO GET TO
SHELTER IF THE STORMS BECOME ANY STRONGER.

TDK

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1989Every severe thunderstorm warning in 1989

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.