Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 146, NWS Twin Cities, MN

July 18, 1994Martin County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 18, 1994, 5:05 PM CDT for Martin County, Minnesota. It was in force for 40 min.

The area

The counties it named.

The facts

Issued: Jul 18, 1994, 5:05 PM CDT (22:05 UTC)
Expired: Jul 18, 1994, 5:45 PM CDT
In force: 40 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Martin County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 10.1 hours before the alert went out and 151 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 
TTAA00 KRST 182208 RRA
SVRRST
MNC091-182245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
505 PM CDT MON JUL 18 1994
 
THE NATIONAL WEATHER SERVICE IN ROCHESTER MN HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL MINNESOTA
 
   ...WESTERN MARTIN COUNTY
 
...AT 502PM...RADAR INDICATED A SEVERE THUNDERSTORM ALONG THE
JACKSON...MARTIN COUNTY IN EXTREME NORTHWESTERN MARTIN COUNTY. THIS
STORM WAS MOVING TO THE SOUTHEAST AT 20 MPH AND SHOULD BE MOVING INTO
THE TOWN OF SHERBURN OR 14 MILES WEST OF FAIRMONT BY 515PM...AND NEAR
THE TOWN OF DUNNEL OR 17 MILES SOUTHWEST OF FAIRMONT BjY 530PM. THIS
STORM WILL LIKELY PRODUCE LARGE HAIL...STRONG WINDS...AND DANGEROUS
LIGHTNING AS IT MOVES THROUGH WESTERN MARTIN COUNTY.
 
JT

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 18, 2:16 PM CDT, 2 hours 49 minutes before

MNZ065-073-182020-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
217 PM CDT MON JUL 18 1994

...SEVERE THUNDERSTORMS NORTHWEST OF REDWOOD AND RENVILLE COUNTIES...

AT 215 PM...A CLUSTER OF SEVERE THUNDERSTORMS WAS LOCATED OVER
CHIPPEWA...SOUTHERN LAC QUI PARLE AND NORTHERN YELLOW MEDICINE
COUNTIES. THE STRONGEST THUNDERSTORM WAS ABOUT 10 MILES NORTHWEST OF
MONTEVIDEO OR ABOUT 25 MILES WEST OF WILLMAR.  ANOTHER STRONG AND
POSSIBLY SEVERE THUNDERSTORM WAS NEAR PROVIDENCE IN SOUTHERN LAC QUI
PARLE COUNTY.

THESE THUNDERSTORMS WERE MOVING TO THE EAST TO SOUTHEAST AT 20 MPH AND
WILL BEGIN TO AFFECT WESTERN RENVILLE AND THE FAR NORTHWEST PORTIONS
OF REDWOOD COUNTY AFTER 245 PM.  SOME TOWNS THAT LIE IN THE PATH
OF THESE THUNDERSTORMS INCLUDE MINNESOTA FALLS...SACRED HEART AND
BELVIEW.

THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING LARGE HAIL AND
DAMAGING WINDS IN EXCESS OF 55 MPH IN ADDITION TO FREQUENT CLOUD TO
GROUND LIGHTNING AND TORRENTIAL RAINFALL.

AT SIGNS OF AN IMPENDING STORM...TOWERING THUNDERHEADS...DARKENING
SKIES...LIGHTNING AND INCREASING WINDS...MOVE TO A PLACE OF SAFETY.
TUNE IN NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TV STATION FOR
TVHE LATEST WEATHER INFORMATION.

KAVINSKY

Special weather statement, Jul 18, 2:17 PM CDT, 2 hours 48 minutes before

MNZ065-073-182020-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
217 PM CDT MON JUL 18 1994

...SEVERE THUNDERSTORMS NORTHWEST OF REDWOOD AND RENVILLE COUNTIES...

AT 215 PM...A CLUSTER OF SEVERE THUNDERSTORMS WAS LOCATED OVER
CHIPPEWA...SOUTHERN LAC QUI PARLE AND NORTHERN YELLOW MEDICINE
COUNTIES. THE STRONGEST THUNDERSTORM WAS ABOUT 10 MILES NORTHWEST OF
MONTEVIDEO OR ABOUT 25 MILES WEST OF WILLMAR.  ANOTHER STRONG AND
POSSIBLY SEVERE THUNDERSTORM WAS NEAR PROVIDENCE IN SOUTHERN LAC QUI
PARLE COUNTY.

THESE THUNDERSTORMS WERE MOVING TO THE EAST TO SOUTHEAST AT 20 MPH AND
WILL BEGIN TO AFFECT WESTERN RENVILLE AND THE FAR NORTHWEST PORTIONS
OF REDWOOD COUNTY AFTER 245 PM.  SOME TOWNS THAT LIE IN THE PATH
OF THESE THUNDERSTORMS INCLUDE MINNESOTA FALLS...SACRED HEART AND
BELVIEW.

THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING LARGE HAIL AND
DAMAGING WINDS IN EXCESS OF 55 MPH IN ADDITION TO FREQUENT CLOUD TO
GROUND LIGHTNING AND TORRENTIAL RAINFALL.

AT SIGNS OF AN IMPENDING STORM...TOWERING THUNDERHEADS...DARKENING
SKIES...LIGHTNING AND INCREASING WINDS...MOVE TO A PLACE OF SAFETY.
TUNE IN NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TV STATION FOR
THE LATEST WEATHER INFORMATION.

KAVINSKY

Local storm report, Jul 18, 3:12 PM CDT, 1 hour 53 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, 3:13 PM CDT, 1 hour 52 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, 4:05 PM CDT, 1 hour before

LOCAL STORM REPORT...UPDATE
NATIONAL WEATHER SERVICE ST CLOUD MN
405 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.

344  PM       YELLOW MEDICINE COUNTY...344 PM...3/4 HAIL AT CANBY.

820  PM       3/4 INCH HAIL NEAR MELROSE IN STEARNS COUNTY...20 MILES
              NORTHWEST OF ST CLOUD.

FRASER

Local storm report, Jul 18, 4:08 PM CDT, 57 minutes before

LOCAL STORM REPORT...UPDATE
NATIONAL WEATHER SERVICE ST CLOUD MN
405 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.

344  PM       YELLOW MEDICINE COUNTY...344 PM...3/4 HAIL AT CANBY.

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, 2:06 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	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

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.