Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 118, NWS Twin Cities, MN

July 5, 1994Morrison County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 5, 1994, 9:13 PM CDT for Morrison County, Minnesota. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
Jul 5, 1994, 9:13 PM CDT (02:13 UTC)
Expired
Jul 5, 1994, 10:00 PM CDT
In force
47 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Morrison County, MN

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 2.2 hours before the alert went out and 294 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, International Fa, MN at 00:00Z on 1994-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 107 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, International Fa, MN at 00:00Z on 1994-07-06The 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
107 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
1204 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
17 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 
WUUS1 KSTC 060213 RRA
SVRSTC
MNC097-060300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
913 PM CDT TUE JUL 5 1994
 
THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL MINNESOTA
 
   ...MORRISON COUNTY
 
INCLUDING THE CITIES OF LITTLE FALLS...PIERZ AND ROYALTON.
 
AT 900 PM RADAR SHOWED A SEVERE THUNDERSTORM NEAR LITTLE FALLS AND
15 MILES SOUTHWEST OF LITTLE FALLS MOVING TO THE EAST AT 20 MPH.
THESE STORMS WILL AFFECT LITTLE FALLS...UPSALA AND BOWLES BETWEEN 900
AND 930 PM AND WILL MOVE INTO ROYALTON AND PIERZ BY 945 PM.
 
 
IF OUTSIDE..FIND A STRONG BUILDING.  DO NOT SEEK SHELTER UNDER TREES.
STAY INDOORS AWAY FROM WINDOWS.  DO NOT USE ELECTRICAL APPLIANCES.
 
 
 
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, Jul 5, 8:30 PM CDT, 43 minutes before
MNZ042>044-046-048>051-054>058-064-060130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
830 PM CDT TUE JUL 5 1994

...STRONG THUNDERSTORMS DEVELOPING IN WEST-CENTRAL MINNESOTA...

AT 825 PM RADAR SHOWED A STRONG THUNDERSTORM DEVELOPING IN WEST SWIFT
COUNTY ABOUT 15 MILES WEST OF BENSON.  THIS STORM WAS MOVING EAST AT
25 MPH AND SHOULD BE IN THE DANVERS/BENSON AREAS BY 9 PM.

THIS THUNDERSTORM CAN PRODUCE HEAVY RAIN...HAIL...FREQUENT LIGHTNING
STRIKES AND GUSTY WINDS.

PERSONS IN SWIFT COUNTY SHOULD KEEP AN EYE TO THE SKY AND SEEK
SHELTER IF THREATENING WEATHER APPROACHES.

FRASER
Special weather statement, Jul 5, 8:31 PM CDT, 42 minutes before
MNZ042>044-046-048>051-054>058-064-060130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
830 PM CDT TUE JUL 5 1994

...STRONG THUNDERSTORMS DEVELOPING IN WEST-CENTRAL MINNESOTA...

AT 825 PM RADAR SHOWED A STRONG THUNDERSTORM DEVELOPING IN WEST SWIFT
COUNTY ABOUT 15 MILES WEST OF BENSON.  THIS STORM WAS MOVING EAST AT
25 MPH AND SHOULD BE IN THE DANVERS/BENSON AREAS BY 9 PM.

THIS THUNDERSTORM CAN PRODUCE HEAVY RAIN...HAIL...FREQtUENT LIGHTNING
STRIKES AND GUSTY WINDS.

PERSONS IN SWIFT COUNTY SHOULD KEEP AN EYE TO THE SKY AND SEEK
SHELTER IF THREATENING WEATHER APPROACHES.

FRASER
Local storm report, Jul 5, 8:55 PM CDT, 18 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
855 PM CDT TUE JUL 05 1994

PRELIMINARY REPORT FOR 5 JUL 94

852  PM     GOLF BALL SIZE HAIL (1 3/4 INCH) AT HOLLAWAY IN SWIFT
            COUNTY...15 MILES SOUTHWEST OF BENSON.

FRASER
Local storm report, Jul 5, 9:01 PM CDT, 12 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
855 PM CDT TUE JUL 05 1994

PRELIMINARY REPORT FOR 5 JUL 94

852  PM     GOLF BALL SIZE HAIL (1 3/4 INCH) AT HOLLAWAY IN SWIFT
            COUNTY.X..15 MILES SOUTHWEST OF BENSON.

FRASER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 8:41 PM CDTSevere Thunderstorm WarningMPXSwift49 min
Jul 5, 9:37 PM CDTSevere Thunderstorm WarningMPXSwift38 min
Jul 5, 10:02 PM CDTSevere Thunderstorm WarningMPXMorrison58 min
Jul 5, 10:22 PM CDTSevere Thunderstorm WarningMPXChippewa53 min
Jul 6, 1:55 AM CDTFlash Flood WarningMPXGoodhue3 hr
Jul 6, 2:39 PM CDTSevere Thunderstorm WarningMPXSwift51 min
Jul 6, 3:33 PM CDTSevere Thunderstorm WarningMPXSwift42 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.