Alert archive / Minnesota / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 8, NWS Twin Cities, MN

May 27, 1993Winona County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 27, 1993, 7:31 PM CDT for Winona County, Minnesota. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
May 27, 1993, 7:31 PM CDT (00:31 UTC)
Expired
May 27, 1993, 8:00 PM CDT
In force
29 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Winona County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 0.5 hours before the alert went out and 174 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 1993-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 1993-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
724 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
81 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 
TTAA00 KRST 280033 RRA
SVRRST
MNC169-280100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
731 PM CDT THU MAY 27 1993
 
THE NATIONAL WEATHER SERVICE IN ROCHESTER MN HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  800 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST MINNESOTA
 
   ...SOUTHEASTERN WINONA COUNTY
 
A SEVERE THUNDERSTORM WAS INDICATED BY RADAR IN SOUTHEAST WINONA COUTNY
ABOUT 10 MILES SOUTH OF WINONA. IT WAS MOVING TO THE EAST AT 25 MPH.
 
SOME CITIES AND TOWNS IN THE PATH OF THIS STORM ARE
WINONA...RIDGEWAY...NODINE AND ALSO BOATERS ALONG THE MISSISSIPPI RIVER
BETWEEN WINONA AND LA CROSSE.
 
 
PEOPLE IN THE AFFEFCTED AREA SHOULD TAKE SHELTER IN A STRONG
BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND
DEADLY LIGHTNING ARE ALL POSSIBLE.  STAY AWAY FROM WINDOWS.
MOTORISTS SHOULD GET OFF THE ROAD AND FIND A SAFE SHELTER.

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, May 27, 6:42 PM CDT, 49 minutes before
WIZ003-006-MNZALL-280045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
642 PM CDT THU MAY 27 1993

...STRONG THUNDERSTORMS OVER WEST CENTRAL WISCONSIN...

STRONG THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE OCCURRING OVER
EXTREME EASTERN WINONA COUNTY OF SOUTHEAST MINNESOTA...AND EXTENDED
INTO BUFFALO...TREMPEALEAU...JACKSON...AND CLARK COUNTIES OF WEST
CENTRAL WISCONSIN AT 630 PM.  THEY EXTENDED FROM MINNESOTA CITY...ALONG
THE MISSISSIPPI RIVER...TO NEAR BLAIR WISCONSIN AND FAIRCHILD.

WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS...THEY ARE
STILL CAPABLE OF PRODUCING LARGE DAMAGING HAIL...STRONG GUSTY WINDS...
EXTREMELY HEAVY RAINFALL...AND FREQUENT DEADLY LIGHTNING.  PERSONS
ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE READY TO SEEK SAFE SHELTER.

MOVEMENT WAS TO THE EAST AT 40 TO 45 MILES AN HOUR.
DLK
Special weather statement, May 27, 6:43 PM CDT, 48 minutes before
WIZ003-006-MNZALL-280045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
642 PM CDT THU MAY 27 1993

...STRONG THUNDERSTORMS OVER WEST CENTRAL WISCONSIN...

STRONG THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE OCCURRING OVER
EXTREME EASTERN WINONA COUNTY OF SOUTHEAST MINNESOTA...AND EXTENDED
INTO BUFFALO...TREMPEALEAU...JACKSON...AND CLARK COUNTIES OF WEST
CENTRAL WISCONSIN AT 630 PM.  THEY EXTENDED FROM MINNESOTA CITY...ALONG
THE MISSISSIPPI RIVER...TO NEAR BLAIR WISCONSIN AND FAIRCHILD.

WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS...THEY ARE
STILL CAPABLE OF PRODUCING LARGE DAMAGING HAIL...STRONG GUSTY WINDS...
EXTREMELY HEAVY RAINFALL...AND FREQUENT DEADLY LIGHTNING.  PERSONS
ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE READY TO SEEK SAFE SHELTER.

MOVEMENT WAS TO THE EAST AT 40 TO 45 MILES AN HOUR.
DLK

Nearby

Severe Thunderstorm Warnings in Minnesota, 1993Every severe thunderstorm warning in 1993

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.