Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 143, NWS Twin Cities, MN

July 18, 1994Chippewa County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 18, 1994, 2:06 PM CDT for Chippewa County, Minnesota. It was in force for 54 min.

The area

The counties it named.

The facts

Issued: Jul 18, 1994, 2:06 PM CDT (19:06 UTC)
Expired: Jul 18, 1994, 3:00 PM CDT
In force: 54 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Chippewa County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 7.1 hours before the alert went out and 156 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1309 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KSTC 181906 RRA
SVRSTC
MNC023-182000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
206 PM CDT MON JUL 18 1994
 
THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  300 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL MINNESOTA
 
   ...CHIPPEWA COUNTY
 
AT 200 PM RADAR SHOWED A SEVERE THUNDERSTORM 10 MILES NORTHWEST OF
MONTEVIDEO MOVING EAST SOUTHEAST AT 20 MPH. STORMS IN THIS PORTION
OF WEST CENTRAL MINNESOTA HAVE A HISTORY OF LARGE HAIL AND HEAVY RAIN.
THIS STORM WILL MOVE THROUGH MILAN...WATSON AND MONTEVIDEO BY 230 PM
AND INTO MAYNARD AND CLARA CITY BY 245 PM.
 
 
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

Local storm report, Jul 18, 9:00 AM CDT, 5 hours 6 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
900 AM CDT MON JUL 18 1994

PRELIMINARY REPORT FOR 18 JUL 94

815   AM      BIG STONE COUNTY...AT CLINTON 15 N OF ORTONVILLE...
              PEA TO MARBLE HAIL.

900   AM      BIG STONE CTY...14 NE ORTONVILLE...3/4 (DIME) HAIL.

1220  PM      GOLF BALL SIZE HAIL.  TRAVERSE/BIG STONE COUNTY
              LINE...CITY OF GRACEVILLE. 20 MILES NORTH OF
              ORTONVILLE.

1245 PM       GOLF BALL SIZE HAIL...NUMEROUS REPORTS MARBLE SIZE
              HAIL.  VICINITY OF CLINTON IN BIG STONE COUNTY...
              10 MILES NORTH OF ORTONVILLE.

FRASER

Local storm report, Jul 18, 9:03 AM CDT, 5 hours 3 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
900 AM CDT MON JUL 18 1994

PRELIMINARY REPORT FOR 18 JUL 94

815 AM      BIG STONE COUNTY...AT CLINTON 15 N OF ORTONVILLE...
            PEA TO M*ARBLE HAIL.

900 AM      BIG STONE CTY...14 NE ORTONVILLE...3/4 (DIME) HAIL.

RAY

Local storm report, Jul 18, 1:04 PM CDT, 1 hour 2 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
900 AM CDT MON JUL 18 1994

PRELIMINARY REPORT FOR 18 JUL 94

815   AM      BIG STONE COUNTY...AT CLINTON 15 N OF ORTONVILLE...
              PEA TO MARBLE HAIL.

900   AM      BIG STONE CTY...14 NE ORTONVILLE...3/4 (DIME) HAIL.

1220  PM      GOLF BALL SIZE HAIL.  TRAVERSE/BIG STONE COUNTY
              LINE...CITY OF GRACEVILLE. 20 MILES NORTH OF
              ORTONVILLE.

1245 PM       GOLF BALL SIZE HAIL...NUMEROUS REPORTS MARBLE SIZE
              HAIL.  VICINITY OF CLINTON IN BIG STONE COUNTY...
              10 MILES NORTH OF ORTONVILLE.

FRASER

Local storm report, Jul 18, 1:40 PM CDT, 26 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
140 PM CDT MON JUL 18 1994

PRELIMINARY REPORT FOR 18 JUL 94

815   AM      BIG STONE COUNTY...AT CLINTON 15 N OF ORTONVILLE...
              PEA TO MARBLE HAIL.

900   AM      BIG STONE CTY...14 NE ORTONVILLE...3/4 (DIME) HAIL.

1220  PM      GOLF BALL SIZE HAIL.  TRAVERSE/BIG STONE COUNTY
              LINE...CITY OF GRACEVILLE. 20 MILES NORTH OF
              ORTONVILLE.

1245 PM       GOLF BALL SIZE HAIL...NUMEROUS REPORTS MARBLE SIZE
              HAIL.  VICINITY OF CLINTON IN BIG STONE COUNTY...
              10 MILES NORTH OF ORTONVILLE.

135  PM       MARBLE SIZE HAIL AND 60 MPH WINDS REPORTED IN NASSAU
              AND MARIETTA IN LAC QUI PARLE COUNTY.

230  PM       DIME SIZE HAIL AND 60 MPH WINDS NEAR CANBY IN YELLOW
              MEDICINE COUNTY...55 MILES NORTHWEST OF REDWOOD FALLS.

FRASER

Local storm report, Jul 18, 1:43 PM CDT, 23 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
140 PM CDT MON JUL 18 1994

PRELIMINARY REPORT FOR 18 JUL 94

815   AM      BIG STONE COUNTY...AT CLINTON 15 N OF ORTONVILLE...
              PEA TO MARBLE HAIL.

900   AM      BIG STONE CTY...14 NE ORTONVILLE...3/4 (DIME) HAIL.

1220  PM      GOLF BALL SIZE HAIL.  TRAVERSE/BIG STONE COUNTY
              LINE...CITY OF GRACEVILLE. 20 MILES NORTH OF
              ORTONVILLE.

1245 PM       GOLF BALL SIZE HAIL...NUMEROUS REPORTS MARBLE SIZE
              HAIL.  VICINITY OF CLINTON IN BIG STONE COUNTY...
              10 MILES NORTH OF ORTONVILLE.

135 PM        MARBLE SIZE HAIL AND 60 MPH WINDS REPORTED IN NASSAU
              AND MARIETTA IN LAC QUI PARLE COUNTY.

FRASER/PARKIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 8:18 AM CDT	Severe Thunderstorm Warning	MPX	Big Stone	57 min
Jul 18, 12:31 PM CDT	Severe Thunderstorm Warning	MPX	Big Stone	59 min
Jul 18, 1:36 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle	54 min
Jul 18, 2:18 PM CDT	Severe Thunderstorm Warning	MPX	Yellow Medicine	57 min
Jul 18, 3:10 PM CDT	Severe Thunderstorm Warning	MPX	Redwood	65 min
Jul 18, 5:05 PM CDT	Severe Thunderstorm Warning	MPX	Martin	40 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.