Alert archive / Minnesota / Tornado Warnings in 1991

Tornado Warning 6, NWS Twin Cities, MN

June 18, 1991Meeker County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 18, 1991, 9:53 AM CDT for Meeker County, Minnesota. It was in force for 22 min.

The area

The counties it named.

The facts

Issued
Jun 18, 1991, 9:53 AM CDT (14:53 UTC)
Expired
Jun 18, 1991, 10:15 AM CDT
In force
22 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Meeker County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 2.9 hours before the alert went out and 79 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 12:00Z on 1991-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 814 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, Minneapolis, MN at 12:00Z on 1991-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 square meters per square second.193958Sfc1 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
814 J/kg
Mixed-layer CIN
-230 J/kg
Mixed-layer LCL
926 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
135 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 
TTAA00 KSTC 181453
TORSTC
MNC093-181515-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
953 AM CDT TUE JUN 18 1991
 
THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA   HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1015 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL MINNESOTA
 
   ...MEEKER COUNTY
 
INCLUDING THE CITIES OF GROVE CITY...LITCHFIELD...DASSEL AND
CEDAR MILLS.
 
AT 945 AM CDT A TORNADO WAS REPORTED 4 MILES NORTH OF GROVE CITY
OR 10 MILES WEST OF LITCHFIELD WHICH IS 35 MILES SOUTHWEST OF
ST CLOUD. THE TORNADO WAS MOVING EAST AT 25 MPH AND WILL AFFECT
GROVE CITY BY 10 AM CDT...INTO THE LITCHFIELD AND CEDAR MILLS AREAS
BETWEEN 10 AND 1015 AM CDT AND MOVING INTO THE DASSEL AREA BY
1030 AM CDT.
 
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 2:46 AM CDTSevere Thunderstorm WarningMPXRedwood, Renville44 min
Jun 18, 7:54 AM CDTSevere Thunderstorm WarningMPXLac qui Parle36 min
Jun 18, 8:34 AM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Swift56 min
Jun 18, 9:03 AM CDTSevere Thunderstorm WarningMPXBenton, Stearns17 min
Jun 18, 9:27 AM CDTSevere Thunderstorm WarningMPXMcLeod, Wright58 min
Jun 18, 10:16 AM CDTSevere Thunderstorm WarningMPXCarver51 min
Jun 18, 10:33 AM CDTSevere Thunderstorm WarningMPXHennepin57 min

Nearby

Tornado Warnings in Minnesota, 1991Every tornado warning in 1991Tornadoes in 1991

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.