Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 67, NWS Twin Cities, MN

June 20, 1994Redwood County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 20, 1994, 1:44 PM CDT for Redwood County, Minnesota. It was in force for 46 min.

The area

The counties it named.

The facts

Issued
Jun 20, 1994, 1:44 PM CDT (18:44 UTC)
Expired
Jun 20, 1994, 2:30 PM CDT
In force
46 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Redwood County, MN

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 6.7 hours before the alert went out and 255 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, Aberdeen, SD at 12:00Z on 1994-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2188 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 1994-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 square meters per square second.1939Sfc1 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
2188 J/kg
Mixed-layer CIN
-270 J/kg
Mixed-layer LCL
939 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
-14 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 KMSP 201845
SVRMSP
MNC127-201930-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
144 PM CDT MON JUN 20 1994
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  230 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST MINNESOTA
 
   ...SOUTHEAST REDWOOD COUNTY
 
AT 144 PM RADAR INDICATED A SEVERE THUNDERSTORM IN REDWOOD COUNTY. THE
SEVERE STORM WAS LOCATED JUST NORTH OF WALNUT GROVE...WHICH IS ABOUT 15
MILES SOUTHWEST OF REDWOOD FALLS.  THE STORM IS MOVING SOUTHEAST AT 30
MPH.
 
CITIES IN THE PATH OF THIS SEVERE STORM ARE REVERE AND LAMBERTON.  THIS
STORM IS MOVING ALONG HIGHWAY 14.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE HAIL...
DEADLY LIGHTNING...AND VERY HEAVY RAIN.  FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM.  PEOPLE IN MOBILE HOMES SHOULD GO
TO A STORM SHELTER.
 
DRB

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 20, 8:43 AM CDT, 5 hours 1 minute before
WIZ014>016-023>028-201445-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
842 AM CDT MON JUN 20 1994

...STRONG THUNDERSTORMS MOVING INTO WEST CENTRAL WISCONSIN...

AT 840 AM...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM NEAR CLEAR
LAKE WISCONSIN...THROUGH BALDWIN TO NEAR RED WING MINNESOTA. THIS
LINE OF THUNDERSTORMS HAS A HISTORY OF PRODUCING NUMEROUS CLOUD TO
GROUND LIGHTNING STRIKES...GUSTY WINDS TO OVER 40 MILES AN HOUR...AND
HEAVY DOWNPOURS.

RESIDENTS IN WHEELER...MENOMONIE AND DURAND CAN EXPECT THESE
THUNDERSTORMS TO MOVE INTO THEIR AREA BY AROUND 915 THIS MORNING.
PERSONS ENGAGED IN OUTDOOR ACTIVITIES SHOULD TAKE APPROPRIATE SAFETY
MEASURES AS THESEN STORMS MOVE THROUGH THE AREA.

LUSSKY
Local storm report, Jun 20, 8:44 AM CDT, 5 hours before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
845 AM CDT MON JUN 20 1994

REPORTS FOR JUNE 19-20

1100 PM             PEA SIZE HAIL...HEAVY RAIN...AND WINDS GUSTS
                    TO 40 MPH REPORTED IN MORRISON COUNTY

1149 PM             WIND GUSTS TO 45 MPH BLEW DOWN LARGE TREES
                    IN ELK RIVER IN SHERBURNE COUNTY

1215 AM             SEVERAL TREES DOWN IN PIERZ IN MORRISON COUNTY.
                    ONE TREE HIT A MOVING CAR...NO ONE INJURED.

1232 AM             LIGHTNING STRIKE CAUSED A BARN FIRE NEAR STAPLES
                    IN TODD COUNTY.

 225 AM             POWER LINES KNOCKED DOWN BY FALLING TREE NEAR
                    COUNTY ROADS 48 AND ^23 IN MORRISON COUNTY.

 530 AM             LIGHTNING CAUSED A HOUSE FIRE IN LITTLE FALLS
                    IN MORRISON COUNTY.
Local storm report, Jun 20, 8:45 AM CDT, 4 hours 59 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
845 AM CDT MON JUN 20 1994

REPORTS FOR JUNE 19-20

1100 PM             PEA SIZE HAIL...HEAVY RAIN...AND WINDS GUSTS
                    TO 40 MPH REPORTED IN MORRISON COUNTY

1149 PM             WIND GUSTS TO 45 MPH BLEW DOWN LARGE TREES
                    IN ELK RIVER IN SHERBURNE COUNTY

1215 AM             SEVERAL TREES DOWN IN PIERZ IN MORRISON COUNTY.
                    ONE TREE HIT A MOVING CAR...NO ONE INJURED.

1232 AM             LIGHTNING STRIKE CAUSED A BARN FIRE NEAR STAPLES
                    IN TODD COUNTY.

 225 AM             POWER LINES KNOCKED DOWN BY FALLING TREE NEAR
                    COUNTY ROADS 48 AND 23 IN MORRISON COUNTY.

 530 AM             LIGHTNING CAUSED A HOUSE FIRE IN LITTLE FALLS
                    IN MORRISON COUNTY.
Special weather statement, Jun 20, 12:48 PM CDT, 56 minutes before
MNZ042>044-046-048>051-054>058-064-201830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
1245 AM CDT MON JUN 20 1994

...STRONG THUNDERSTORMS MOVING INTO WEST-CENTRAL MINNESOTA...

AT 1240 RADAR SHOWED A LINE OF STRONG THUNDERSTORMS IN YELLOW
MEDICINE AND LINCOLN COUNTIES OF WESTERN MINNESOTA. HEAVY RAIN WAS
REPORTED IN CANBY...55 MILES NORTHWEST OF REDWOOD FALLS.

THESE THUNDERSTORMS WERE MOVING EAST-SOUTHEAST AT 20 MPH AND ARE
CAPABLE OF PRODUCING BRIEF VERY HEAVY RAIN...SMALL HAIL...FREQUENT
LIGHTNING STRIKES AND WIND GUSTS TO 45 MPH.

BY 230 PM THESE STRONG STORMS SHOULD MOVE INTO OR NEAR THE
CITIES OF PORTER...ST LEO AND HANLEY FALLS OF YELLOW MEDICINE COUNTY.
PERSpONS IN THE PATH OF THESE STORMS SHOULD BE PREPARED TO SEEK
SHELTER IF THREATENING WEATHER APPROACHES.

FRASER
Special weather statement, Jun 20, 1:01 PM CDT, 43 minutes before
MNZ052-053-059>063-065>070-073-WIZ014>016-023-028-201905-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
101 PM CDT MON JUN 20 1994

...STRONG THUNDERSTORMS PRODUCING HEAVY RAINS OVER SOUTHWEST
MINNESOTA...

THUNDERSTORMS WITH HEAVY TO VERY HEAVY RAINS WERE LOCATED OVER
SOUTHWEST MINNESOTA ALONG AND NEAR THE MINNESOTA RIVER FROM GRANITE
FALLS TO THE REDWOOD FALLS AREA.

THE STORMS WERE MOVING TO THE EAST SOUTHEAST AT 20 MILES AN HOUR AND
THEY SHOULD EXTEND FROM REDWOOD FALLS TO NEW ULM BY 130 PM.

PERSONS IN SOUTHWEST MINNESOTA ALONG AND NEAR THE MINNESOTA RIVER
VALLEY SHOULD BE PREPARED FOR SOME LOCALLY HEAVY RAINS. THE HEAVY
RAINS COULD CAUSE SOME LOCALIZED FLOODING OF STREETS AND RISES IN
AREA STREAMS AND RIVERS.

THIS BAND OF THUNDERSTORMS WAS PART OF A LARGE AREA OF SHOWERS AND
THUNDERSTORMS THAT EXTENDED FROM SOUTHWEST MINNESOTA NEAR MONTEVIDEO
DOWN INTO SOUTH CENTRAL MINNESOTA NEAR ALBERT LEA AND AUSTIN.

MOVEMENT WAS TO THE SOUTHEAST AT 20 MILES AN HOUR.
SES
Special weather statement, Jun 20, 1:03 PM CDT, 41 minutes before
MNZ052-053-059>063-065>070-073-WIZ014>016-023-028-201905-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
101 PM CDT MON JUN 20 1994

...STRONG THUNDERSTORMS PRODUCING HEAVY RAINS OVER SOUTHWEST
MINNESOTA...

THUNDERSTORMS WITH HEAVY TO VERY HEAVY RAINS WERE LOCATED OVER
SOUTHWEST MINNESOTA ALONG AND NEAR THE MINNESOTA RIVER FROM GRANITE
FALLS TO THE REDWOOD FALLS AREA.

THE STORMS WERE MOVING TO THE EAST SOUTHEAST AT 20 MILES AN HOUR AND
THEY SHOULD EXTEND FROM REDWOOD FALLS TO NEW ULM BY 130 PM.

PERSONS IN SOUTHWEST MINNESOTA ALONG AND NEAR THE MINNESOTA RIVER
VALLEY SHOULD BE PREPARED FOR SOME LOCALLY HEAVY RAINS. THE HEAVY
RAINS COULD CAUSE SOME LOCALIZED FLOODING OF STREETS AND RISES IN
AREA STREAMS AND RIVERS.

THIS BAND OF THUNDERSTORMS WAS PART OF A LARGE AREA OF SHOWERS AND
THUNDERSTORMS THAT EXTENDED FROM SOUTHWEST MINNESOTA NEAR MONTEVIDEO
DOWN INTO SOUTH CENTRAL MINNESOTA NEAR ALBERT LEA AND AUSTIN.

MOVEMENT WAS TO THE SOUTHEAST AT 20 MILES AN HOUR.
SES

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 19, 9:41 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd49 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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.