Alert archive / Minnesota / Tornado Warnings in 1993

Tornado Warning 30, NWS Twin Cities, MN

August 18, 1993Benton County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Aug 18, 1993, 4:46 AM CDT for Benton County, Minnesota. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Aug 18, 1993, 4:46 AM CDT (09:46 UTC)
Expired
Aug 18, 1993, 5:15 AM CDT
In force
29 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Benton County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 9.8 hours before the alert went out and 99 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 1993-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1153 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 00:00Z on 1993-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 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
1153 J/kg
Mixed-layer CIN
-121 J/kg
Mixed-layer LCL
1053 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
58 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 KMSP 180948
TORSTC
MNC009-181015-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST CLOUD MN
ISSUED BY MINNEAPOLIS MN
446 AM CDT WED AUG 18 1993
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  515 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL MINNESOTA
 
   ...BENTON COUNTY
 
AT 440 AM CDT THIS WEDNESDAY MORNING THE PUBLIC REPORTS A TORNADO NEAR
SARTELL IN SOUTHWEST BENTON COUNTY OR...10 MILES NORTH OF ST. CLOUD.
RADAR INDICATES EAST MOVEMENT OF 40 MPH WHICH WOULD CARRY THIS STORM
ACROSS POPPLE CREEK...PARENT AND FOLEY BY 515 AM CDT.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH ORJ STAIRWAY TO AVOID COLLAPSING
WALLS.  IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN A CENTRAL
ROOM SUCH AS A CLOSET OR BATHROOM ON THE LOWEST FLOOR.
USE BLANKETS...PILLOWS...OR CUSHIONS TO COVER YOUR BODY.
 
 TOGSTAD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 5:20 AM CDTSevere Thunderstorm WarningMPXMcLeod, Wright40 min
Aug 18, 5:24 AM CDTSevere Thunderstorm WarningMPXMeeker36 min
Aug 18, 5:52 AM CDTSevere Thunderstorm WarningMPXCarver, Wright53 min
Aug 18, 6:46 AM CDTSevere Thunderstorm WarningMPXLe Sueur, Nicollet44 min
Aug 18, 6:58 AM CDTSevere Thunderstorm WarningMPXRamsey30 min
Aug 18, 6:58 AM CDTSevere Thunderstorm WarningMPXChisago, Washington47 min
Aug 18, 8:07 AM CDTSevere Thunderstorm WarningMPXDodge, Steele38 min
Aug 18, 8:45 AM CDTSevere Thunderstorm WarningMPXOlmsted15 min
Aug 18, 9:04 AM CDTSevere Thunderstorm WarningMPXWabasha, Winona41 min

Nearby

Tornado Warnings in Minnesota, 1993Every tornado warning in 1993Tornadoes in 1993

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.