Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 21, NWS Twin Cities, MN

May 23, 1994Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 23, 1994, 9:38 PM CDT for Yellow Medicine County, Minnesota. It was in force for 52 min.

The area

The counties it named.

The facts

Issued
May 23, 1994, 9:38 PM CDT (02:38 UTC)
Expired
May 23, 1994, 10:30 PM CDT
In force
52 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Yellow Medicine County, MN

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 2.6 hours before the alert went out and 201 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 1994-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1212 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, Aberdeen, SD at 00:00Z on 1994-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
1212 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
2117 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KSTC 240238 RRA
SVRSTC
MNC173-240330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA
938 PM CDT MON MAY 23 1994
 
THE NATIONAL WEATHER SERVICE IN ST CLOUD MINNESOTA  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL MINNESOTA
 
   ...EASTERN YELLOW MEDICINE COUNTY
 
AT 930 PM CDT RADAR SHOWED A SEVERE THUNDERSTORM WAS LOCATED 5 MILES
SOUTHWEST OF MONTEVIDEO AND MOVING SOUTHEAST AT 20 MPH. THIS STORM
HAS A HISTORY OF LARGE HAIL AND DAMAGING WINDS AND WILL AFFECT THE
CITIES OF GRANITE FALLS...CLARKFIELD...HAZEL RUN...WOOD LAKE AND
ECHO BY 1000 PM.
 
IF YOU OUTSIDE IN THE OPEN...YOU SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
DO NOT USE ELECTRICAL APPLIANCES OR THE TELEPHONE UNLESS IT IS
AN EMERGENCY.
 
 
 
&
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 7:45 PM CDTSevere Thunderstorm WarningMPXBig Stone60 min
May 23, 7:54 PM CDTSevere Thunderstorm WarningMPXBig Stone51 min
May 23, 8:43 PM CDTSevere Thunderstorm WarningMPXLac qui Parle47 min
May 23, 9:05 PM CDTSevere Thunderstorm WarningMPXChippewa, Swift55 min
May 23, 9:52 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns53 min
May 23, 10:02 PM CDTSevere Thunderstorm WarningMPXKandiyohi43 min
May 23, 10:07 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville53 min
May 23, 10:52 PM CDTSevere Thunderstorm WarningMPXRedwood38 min
May 23, 11:07 PM CDTSevere Thunderstorm WarningMPXBrown, Nicollet47 min
May 23, 11:38 PM CDTSevere Thunderstorm WarningMPXWatonwan52 min
May 24, 12:43 AM CDTSevere Thunderstorm WarningMPXBlue Earth, Faribault32 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; the sounding from the Mesonet's radiosonde archive.