Alert archive / Minnesota / Tornado Warnings in 1993

Tornado Warning 4, NWS Twin Cities, MN

May 7, 1993Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this tornado warning at May 7, 1993, 8:31 PM CDT for Yellow Medicine County, Minnesota. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
May 7, 1993, 8:31 PM CDT (01:31 UTC)
Expired
May 7, 1993, 9:30 PM CDT
In force
59 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Yellow Medicine County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 1.5 hours before the alert went out and 180 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 1993-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 449 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 1993-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
449 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
975 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
266 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTC 080131
TORSTC
MNC173-080230-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
831 PM CDT FRI MAY 7 1993
 
THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA  HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  930 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL MINNESOTA
 
   ...EASTERN YELLOW MEDICINE COUNTY
 
AT 830 PM CDT NUMEROUS TORNADOES WERE BEING REPORTED IN EASTERN
YELLOW MEDICINE COUNTY. THESE TORNADOES WERE DROPPING FROM THE
CLOUDS  WITH LITTLE ADVANCED NOTICE. PEOPLE IN EASTERN YELLOW MEDICEN
SHOULD TAKE COVER.
 
SEEK SHELTER IN THE BASEMENT UNDER A WORKBENCH OR PIECE OF STURDY
FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR
ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR.
HAYS
 
 
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 7:41 PM CDTSevere Thunderstorm WarningMPXYellow Medicine49 min
May 7, 7:55 PM CDTTornado WarningMPXRedwood35 min
May 7, 8:03 PM CDTSevere Thunderstorm WarningMPXRedwood42 min
May 7, 8:05 PM CDTTornado WarningMPXChippewa40 min
May 7, 8:07 PM CDTTornado WarningMPXRenville38 min
May 7, 8:58 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville32 min
May 7, 9:25 PM CDTSevere Thunderstorm WarningMPXKandiyohi35 min
May 8, 2:58 AM CDTFlash Flood WarningMPXCarver, Sibley2 hr

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.