Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 86, NWS Twin Cities, MN

June 30, 1994Carver County, Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 30, 1994, 7:01 PM CDT for Carver County, Sibley County, Minnesota. It was in force for 59 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 30, 1994, 7:01 PM CDT (00:01 UTC)
Expired
Jun 30, 1994, 8:00 PM CDT
In force
59 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Carver County, MN, Sibley County, MN

What was reported inside it

TimeReportWhereRemark
Jun 30, 7:45 PM CDTTornado F1Winthrop, MNA tornado lifted a porch from a home and carried about 300 feet and leveled a barn on a farmstead. Several large trees were blown down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 0.0 hours before the alert went out and 37 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 1994-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2237 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 1994-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 266 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
2237 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1140 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
266 m²/s²
0-3 km storm-relative helicity
383 m²/s²
Significant tornado parameter
4.4
Supercell composite
12.4

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KMSP 010004
SVRMPX
MNC143-019-010100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
701 PM CDT THU JUN 30 1994
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  800 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MINNESOTA
 
   ...SIBLEY COUNTY
 
IN EAST CENTRAL MINNESOTA
 
   ...CARVER COUNTY
 
AT 700 PM...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS ENTERING
SIBLEY AND CARVER COUNTIES. THESE THUNDERSTORMS HAVE A HISTORY OF
PRODUCING LARGE HAIL.
 
THIS WARNING INCLUDES THE CITIES OF GAYLORD...GREEN ISLE...YOUNG AMERICA
AND WACONIA.
 
WHEN SEVERE THUNDERSTORMS ARE OCCURRING...STAY INSIDE A STRONG
BUILDING.  PROTECT YOURSELF FROM DAMAGING WINDS OR HAIL BY
KEEPING AWAY FROM WINDOWS.  LISTEN TO YOUR RADIO OR TELEVISION...
BUT TURN OFF ALL OTHER ELECTRICAL APPLIANCES.  DO NOT USE THE
PHONE DURING PERIODS OF FREQUENT LIGHTNING.
 
LUSSKY

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 30, 6:03 PM CDT, 58 minutes before
MNZ042>044-046-048>051-054>058-064-302330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
605 PM CDT THU JUN 30 1994

...SEVERE THUNDERSTORM WARNING FOR MEEKER COUNTY UNTIL 630 PM...

AT 600 PM RADAR SHOWED A LINE OF STRONG THUNDERSTORMS EXTENDING FROM
ABOUT 10 MILES NORTHEAST OF ST CLOUD SOUTHWEST TO REDWOOD FALLS
MINNESOTA.

THESE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. THESE STORMS SHOULD
MOVE INTO CLEAR LAKE IN SHERBURNE COUNTY BY 615 PM AND HUTCHINSON
IN MCLEOD COUNTY BY 630 PM.

THESE STORMS ARE CAPABLE OF PRODUCING BRIEF PERIODS OF RAIN...LARGE
HAIL...FREQUENT CLOUD TO GROUND LIGHTNING STRIKES AND  GUSTY WINDS.

PERSONS IN THE PATH OF THESE STORMS SHOULD BE PREPARED TO SEEK
SHELTER IF NECESSARY. LISTEN TO NOAA WEATHER RADIO FOR UPDATES.

FRASER
Special weather statement, Jun 30, 6:05 PM CDT, 56 minutes before
MNZ042>044-046-048>051-054>058-064-302330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
605 PM CDT THU JUN 30 1994

...SEVERE THUNDERSTORM WARNING FOR MEEKER COUNTY UNTIL 630 PM...

AT 600 PM RADAR SHOWED A LINE OF STRONG THUNDERSTORMS EXTENDING FROM
ABOUT 10 MILES NORTHEAST OF ST CLOUD SOUTHWEST TO REDWOOD FALLS
MINNESOTA.

THESE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. THESE STORMS SHOULD
MOVE INTO CLEAR LAKE IN SHERBURNE COUNTY BY 615 PM AND HUTCHINSON
IN MCLEOD COUNTY BY 630 PM.

THESE STORMS ARE CAPABLE OF PRODUCING BRIEF PERIODS OF RAIN...LARGE
HAIL...FREQUENT CLOUD TO GROUND LIGHTNING STRIKES AND  GUSTY WINDS.

PERSONS IN THE PATH OF THESE STORMS SHOULD BE PREPARED TO SEEK
SHELTER IF NECESSARY. LISTEN TO NOAA WEATHER RADIO FOR UPDATES.

FRASER
Local storm report, Jun 30, 6:15 PM CDT, 46 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
615 PM CDT THU JUN 30 1994

PRELIMINARY REPORT FOR 30 JUN 94

603 PM      QUARTER SIZE (1 INCH) HAIL COVERED THE GROUND. 6 MILES
            SOUTH OF LITCHFIELD MINNESOTA...ABOUT 40 MILES SOUTHWEST
            OF ST CLOUD.

FRASER
Local storm report, Jun 30, 6:16 PM CDT, 45 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
615 PM CDT THU JUN 30 1994

PRELIMINARY REPORT FOR 30 JUN 94

603 PM      QUARTER SIZE (1 INCH) HAIL COVERED THE GROUND. 6 MILES
            SOUTH OF LITCHFIELD MINNESOTA...ABOUT 40 MILES SOUTHWEST
            OF ST CLOUD.

FRASER
Special weather statement, Jun 30, 6:50 PM CDT, 11 minutes before
MNZ042>044-046-048>051-054>058-064-010015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
650 PM CDT THU JUN 30 1994

...SEVERE THUNDERSTORM WARNING FOR MEEKER COUNTY HAS EXPIRED...

THE LINE OF THUNDERSTORMS THAT MOVED THROUGH CENTRAL MINNESOTA IS
NOW LOCATED FROM MILACA IN MILLE LACS COUNTY SOUTHWARD TO THE
NORTHWESTERN SUBURBS OF THE TWIN CITIES.

AT 645 THE STRONGEST STORM WAS LOCATED NEAR BUFFALO IN WRIGHT COUNTY.

PARKIN
Special weather statement, Jun 30, 6:52 PM CDT, 9 minutes before
MNZ042>044-046-048>051-054>058-064-010015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
650 PM CDT THU JUN 30 1994

...SEVERE THUNDERSTORM WARNING FOR MEEKER COUNTY HAS EXPIRED...

THE LINE OF THUNDERSTORMS THAT MOVED THROUGH CENTRAL MINNESOTA IS
NOW LOCATED FROM MILACA IN MILLE LACS COUNTY SOUTHWARD TO THE
NORTHWESTERN SUBURBS OF THE TWIN CITIES.

AT 645 THE STRONGEST STORM WAS LOCATED NEAR BUFFALO IN WRIGHT COUNTY.

PARKIN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 7:13 PM CDTTornado WarningMPXCarver, McLeod32 min
Jun 30, 7:22 PM CDTSevere Thunderstorm WarningMPXHennepin68 min
Jun 30, 7:42 PM CDTTornado WarningMPXCarver33 min
Jun 30, 7:47 PM CDTTornado WarningMPXSibley28 min
Jun 30, 7:54 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Nicollet51 min
Jun 30, 8:13 PM CDTTornado WarningMPXScott32 min
Jun 30, 8:21 PM CDTSevere Thunderstorm WarningMPXSibley39 min
Jun 30, 8:22 PM CDTSevere Thunderstorm WarningMPXNicollet68 min
Jun 30, 8:32 PM CDTTornado WarningMPXLe Sueur, Nicollet28 min
Jun 30, 8:42 PM CDTSevere Thunderstorm WarningMPXBrown48 min
Jun 30, 8:49 PM CDTSevere Thunderstorm WarningMPXDakota, Scott21 min
Jun 30, 8:51 PM CDTTornado WarningMPXBlue Earth, Nicollet54 min
Jun 30, 9:41 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Waseca49 min
Jun 30, 9:41 PM CDTSevere Thunderstorm WarningMPXWatonwan49 min
Jun 30, 10:19 PM CDTTornado WarningMPXFreeborn26 min
Jun 30, 10:52 PM CDTSevere Thunderstorm WarningMPXFreeborn38 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.