Alert archive / Minnesota / Tornado Warnings in 1993

Tornado Warning 21, NWS Sioux Falls, SD

July 7, 1993Pipestone County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Jul 7, 1993, 8:02 PM CDT for Pipestone County, Minnesota. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Jul 7, 1993, 8:02 PM CDT (01:02 UTC)
Expired
Jul 7, 1993, 8:30 PM CDT
In force
28 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Pipestone County, MN

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 1.0 hours before the alert went out and 196 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, Aberdeen, SD at 00:00Z on 1993-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 513 joules per kilogram.LCLEL10008507005003002001001 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, Aberdeen, SD at 00:00Z on 1993-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.1939587897117Sfc1 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
513 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
963 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 080103
TORFSD
MNC117-080130-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
802 PM CDT WED JUL 7 1993
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  830 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST MINNESOTA
 
   ...PIPESTONE COUNTY
 
 
THE TORNADOES ARE EXPECTED TO PASS NEAR PIPESTONE...IHLEN...JASPER...
AND HATFIELD.
 
NUMEROUS FUNNEL CLOUDS WERE REPORTED WEST OF PIPESTONE TO JASPER WITH A
POSSIBLE TORNADO 6 MILES SOUTH OF PIPESTONE. THEY WERE MOVING EAST AT 20
MPH.
 
 
DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. IF YOU ARE CAUGHT
IN THE PATH OF A TORNADO...LEAVE THE CAR AND GO TO A STRONG
BUILDING. IF NO STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR
LOW SPOT.
 
RYRHOLM
 
&

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 7, 7:50 PM CDTTornado WarningFSDPipestone10 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.