Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 20, NWS Twin Cities, MN

May 23, 1994Chippewa County, Swift County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 23, 1994, 9:05 PM CDT for Chippewa County, Swift County, Minnesota. It was in force for 55 min.

The area

The counties it named.

The facts

Issued: May 23, 1994, 9:05 PM CDT (02:05 UTC)
Expired: May 23, 1994, 10:00 PM CDT
In force: 55 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Chippewa County, MN, Swift County, MN

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 2.1 hours before the alert went out and 220 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1212 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 2117 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTC 240205 RRA
SVRSTC
MNC023-151-240300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
905 PM CDT MON MAY 23 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 LOCATIONS...
 
IN WEST CENTRAL MINNESOTA
 
   ...CHIPPEWA COUNTY...SWIFT COUNTY
 
AT 900 PM CDT SEVERE THUNDERSTORMS WERE LOCATED NEAR APPLETON WHICH IS
45 MILES WEST OF WILLMAR AND AROUND 10 MILES NORTH OF MADISON OR 60
MILES WEST OF WILLMAR. THESE STORMS HAVE PRODUCED QUARTER TO GOLFBALL
SIZE HAIL AND WINDS TO 60 MPH. SOME CITIES IN THE PATH OF THESE STORMS
INCLUDE APPLETON...BENSON AND MONTIVIDEO.
 
YOU SHOULD MOVE INSIDE A STRONG BUILDING.  DO NOT STAND BY WINDOWS.
DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY
UNTIL THE STORM HAS PASSED.
 
 
 
&
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, May 23, 6:25 PM CDT, 2 hours 40 minutes before

MNZ059-065-073-240200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
625 PM CDT MON MAY 23 1994

...SEVERE THUNDERSTORM WATCH UNTIL 11 PM...

SEVERE THUNDERSTORMS HAD DEVELOPED OVER NORTHWEST MINNESOTA LATE THIS
AFTERNOON.  THUNDERSTORMS WERE EXPECTED TO CONTINUE TO SPREAD EAST
AND SOUTH OVER MINNESOTA THIS EVENING. THERE IS A CHANCE THAT SEVERE
THUNDERSTORMS WILL ALSO DEVELOP OVER CENTRAL AND SOUTHWEST MINNESOTA.
A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR THIS AREA UNTIL 11
PM.

REDWOOD...RENVILLE AND WRIGHT COUNTIES WERE AMONG THE COUNTIES
INCLUDED IN THE WATCH.  TOWNS INCLUDED WERE BUFFALO AND REDWOOD
FALLS.  SEVERE THUNDERSTORMS WITH LARGE HAIL AND STRONG WINDS ARE
POSSIBLE IN THESE AREAS THIS EVENING.

STORMS IN NORTHWEST MINNESOTA HAVE PRODUCED STRONG WINDS WITH
NUMEROUS TREES DOWN.  PEOPLE SHOULD BE ALERT FOR THUNDERSTORM
ACTIVITY AND LISTEN TO THE MEDIA FOR POSSIBLE SEVERE WEATHER
WARNINGS.
 SCOTT

Special weather statement, May 23, 7:25 PM CDT, 1 hour 40 minutes before

MNZ059-065-073-240200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
625 PM CDT MON MAY 23 1994

...SEVERE THUNDERSTORM WATCH UNTIL 11 PM...

SEVERE THUNDERSTORMS HAD DEVELOPED OVER NORTHWEST MINNESOTA LATE THIS
AFTERNOON.  THUNDERSTORMS WERE EXPECTED TO CONTINUE TO SPREAD EAST
AND SOUTH OVER MINNESOTA THIS EVENING. THERE IS A CHANCE THAT SEVERE
THUNDERSTORMS WILL ALSO DEVELOP OVER CENTRAL AND SOUTHWEST MINNESOTA.
A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR THIS AREA UNTIL 11
PM.

REDWOOD...RENVILLE AND WRIGHT COUNTIES WERE AMONG THE COUNTIES
INCLUDED IN THE WATCH.  TOWNS INCLUDED WERE BUFFALO AND REDWOOD
FALLS.  SEVERE THUNDERSTORMS WITH LARGE HAIL AND STRONG WINDS ARE
POSSIBLE IN THESE AREAS THIS EVENING.

STORMS IN NORTHWEST MINNESOTA HAVE PRODUCED STRONG WINDS WITH
NUMEROUS TREES DOWN.  PEOPLE SHOULD BE ALERT FOR THUNDERSTORM
ACTIVITY AND LISTEN TO THE MEDIA FOR POSSIBLE SEVERE WEATHER
WARNINGS.
 SCOTtT

Local storm report, May 23, 8:46 PM CDT, 19 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
900 PM CDT MON MAY 23 1994

REPORT FOR 23 MAY 1994, FIRST REPORT, OTHERS WILL FOLLOW.
ALL TIMES CDT

TIME      EVENT
 825 PM   ORTONVILLE, BIG STONE COUNTY,  QUARTER SIZE  (1 INCH)
          HAIL, WIND GUST TO 60 MPH.
 835 PM   ODESSA,  BIG STONE COUNTY, GOLF BALL SIZE ( 13/4 INCH)
          HAIL, HEAVY RAIN, WIND GUST TO 45 MPH.

FRASER

Local storm report, May 23, 9:00 PM CDT, 5 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
900 PM CDT MON MAY 23 1994

REPORT FOR 23 MAY 1994, FIRST REPORT, OTHERS WILL FOLLOW.
ALL TIMES CDT

TIME      EVENT
 825 PM   ORTONVILLE, BIG STONE COUNTY,  QUARTER SIZE  (1 INCH)
          HAIL, WIND GUST TO 60 MPH.
 835 PM   ODESSA,  BIG STONE COUNTY, GOLF BALL SIZE ( 13/4 INCH)
          HAIL, HEAVY RAIN, WIND GUST TO 45 MPH.

FRASER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:45 PM CDT	Severe Thunderstorm Warning	MPX	Big Stone	60 min
May 23, 7:54 PM CDT	Severe Thunderstorm Warning	MPX	Big Stone	51 min
May 23, 8:43 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle	47 min
May 23, 9:38 PM CDT	Severe Thunderstorm Warning	MPX	Yellow Medicine	52 min
May 23, 9:52 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Sherburne, Stearns	53 min
May 23, 10:02 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	43 min
May 23, 10:07 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville	53 min
May 23, 10:52 PM CDT	Severe Thunderstorm Warning	MPX	Redwood	38 min
May 23, 11:07 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Nicollet	47 min
May 23, 11:38 PM CDT	Severe Thunderstorm Warning	MPX	Watonwan	52 min
May 24, 12:43 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault	32 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1994 Every 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.