Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 59, NWS Twin Cities, MN

June 14, 1994Swift County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 14, 1994, 9:48 PM CDT for Swift County, Minnesota. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Jun 14, 1994, 9:48 PM CDT (02:48 UTC)
Expired
Jun 14, 1994, 10:45 PM CDT
In force
57 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Swift County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 2.8 hours before the alert went out and 170 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 1994-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4090 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 1994-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.193958Sfc1 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
4090 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1595 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.9
Supercell composite
13.9

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KSTC 150248 RRA
SVRSTC
MNC151-150345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
948 PM CDT TUE JUN 14 1994
 
THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1050 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL MINNESOTA
 
   ...SWIFT COUNTY
 
AT 945 PM RADAR INDCIATED SEVERE THUNDERSTORMS MOVING OUT OF CHIPPEWA
COUNTY AND INTO SWIFT COUNTY. THESE STORMS ARE MOVING TO THE NORTHEAST
AT 30 MPH. CITIES IN THE PATH OF THESE STORMS INCLUDE
BENSON...MURDOCK...AND APPLETON.
 
 
IF YOU OUTSIDE IN THE OPEN...YOU SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
DO NOT USE ELECTRICAL APPLIANCES OR THE TELEPHONE UNLESS IT IS
AN EMERGENCY.
 
 
PARKIN
NNNN

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 14, 9:34 PM CDT, 14 minutes before
MNZ052-053-059>063-065>070-073-150330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
934 PM CDT TUE JUN 14 1994

...SEVERE THUNDERSTORMS HAVE DEVELOPED OVER CENTRAL MINNESOTA...

AT 930 PM...A SEVERE THUNDERSTORM WAS LOCATED OVER SHERBURNE
COUNTY...NEAR ELK RIVER OR ABOUT 35 MILES NORTHWEST OF THE TWIN CITIES.
THIS THUNDERSTORM IS PART OF A DEVELOPING LINE OF INTENSE
THUNDERSTORMS WHICH EXTENDED FROM NEAR MORA IN KANABEC COUNTY TO NEAR
GRANITE FALLS IN YELLOW MEDICINE COUNTY.  THIS LINE OF THUNDERSTORMS
WAS MOVING TO THE NORTHEAST AT 30 MPH.

THESE THUNDERSTORMS WILL AFFECT AREAS WELL WEST AND NORTHWEST OF THE
TWIN CITIES METRO AREA THROUGH 1030 PM.  SOME TOWNS THAT WILL BE
AFFECTED INCLUDE CAMBRIDGE IN ISANTI COUNTY AND SACRED HEART AND OLIVIA
IN RENVILLE COUNTY.

OTHER INTENSE AND POSSIBLY SEVERE THUNDERSTORMS WILL DEVELOP OVER
EAST CENTRAL MINNESOTA INTO WEST CENTRAL WISCONSIN THROUGH THE
EARLY MORNING HOURS.

A TORNADO WATCH IS ALSO IN EFFECT FOR MUCH OF EAST CENTRAL MINNESOTA
INCLUDING THE TWIN CITIES AND MOST OF THE METRO AREA...EXTENDING WEST
TO RENVILLE COUNTY.  THIS IS A DANGEROUS SITUATION.  DAMAGING WINDS ARE
LIKELY WITH THESE THUNDERSTORMS AS WELL AS LARGE HAIL AND FREQUENT
CLOUD TO GROUND LIGHTNING.  SEEK SHELTER QUICKLY SHOULD ONE OF THESE
STORMS APPROACH YOUR LOCATION.  LISTEN TO NOAA WEATHER RADIO AND
COMMERCIAL RADIO AND TELEVISION FOR UPDATES AND POSSIBLE WARNINGS.

KAVINSKY
Special weather statement, Jun 14, 9:35 PM CDT, 13 minutes before
MNZ052-053-059>063-065>070-073-150330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
934 PM CDT TUE JUN 14 1994

...SEVERE THUNDERSTORMS HAVE DEVELOPED OVER CENTRAL MINNESOTA...

AT 930 PM...A SEVERE THUNDERSTORM WAS LOCATED OVER SHERBURNE
COUNTY...NEAR ELK RIVER OR ABOUT 35 MILES NORTHWEST OF THE TWIN CITIES.
THIS THUNDERSTORM IS PART OF A DEVELOPING LINE OF INTENSE
THUNDERSTORMS WHICH EXTENDED FROM NEAR MORA IN KANABEC COUNTY TO NEAR
GRANITE FALLS IN YELLOW MEDICINE COUNTY.  THIS LINE OF THUNDERSTORMS
WAS MOVING TO THE NORTHEAST AT 30 MPH.

THESE THUNDERSTORMS WILL AFFECT AREAS WELL WEST AND NORTHWEST OF THE
TWIN CITIES METRO AREA THROUGH 1030 PM.  SOME TOWNS THAT WILL BE
AFFECTED INCLUDE CAMBRIDGE IN ISANTI COUNTY AND SACRED HEART AND OLIVIA
IN RENVILLE COUNTY.

OTHER INTENSE AND POSSIBLY SEVERE THUNDERSTORMS WILL DEVELOP OVER
EAST CENTRAL MINNESOTA INTO WEST CENTRAL WISCONSIN THROUGH THE
EARLY MORNING HOURS.

A TORNADO WATCH IS ALSO IN EFFECT FOR MUCH OF EAST CENTRAL MINNESOTA
INCLUDING THE TWIN CITIES AND MOST OF THE METRO AREA...EXTENDING WEST
TO RENVILLE COUNTY.  THIS IS A DANGEROUS SITUATION.  DAMAGING WINDS ARE
LIKELY WITH THESE THUNDERSTORMS AS WELL AS LARGE HAIL AND FREQUENT
CLOUD TO GROUND LIGHTNING.  SEEK SHELTER QUICKLY SHOULD ONE OF THESE
STORMS APPROACH YOUR LOCATION.  LISTEN TO NOAA WEATHER RADIO AND
COMMERCIAL RADIO AND TELEVISION FOR UPDATES AND POSSIBLE WARNINGS.

KAVINSKY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 8:30 PM CDTSevere Thunderstorm WarningMPXMeeker45 min
Jun 14, 8:54 PM CDTSevere Thunderstorm WarningMPXWright51 min
Jun 14, 8:56 PM CDTSevere Thunderstorm WarningMPXSherburne49 min
Jun 14, 9:04 PM CDTSevere Thunderstorm WarningMPXChippewa, Yellow Medicine56 min
Jun 14, 9:26 PM CDTSevere Thunderstorm WarningMPXMille Lacs34 min
Jun 14, 9:33 PM CDTSevere Thunderstorm WarningMPXIsanti35 min
Jun 14, 9:54 PM CDTSevere Thunderstorm WarningMPXRenville51 min
Jun 14, 11:19 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns56 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.