Alert archive / Minnesota / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 2, NWS Twin Cities, MN

May 7, 1993Redwood County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 7, 1993, 8:03 PM CDT for Redwood County, Minnesota. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
May 7, 1993, 8:03 PM CDT (01:03 UTC)
Expired
May 7, 1993, 8:45 PM CDT
In force
42 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Redwood County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 1.1 hours before the alert went out and 140 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 KMSP 080104
SVRMSP
MNC127-080145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
803 PM CDT FRI MAY 7 1993
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  845 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST MINNESOTA
 
   ...SOUTHERN AND EASTERN REDWOOD COUNTY
 
AT 800 PM...RADAR INDICATED STORMS WITH DAMAGING STRAIGHTLINE WIND
ABOUT TO MOVE INTO REDWOOD COUNTY. THE STORMS EXTENDED FROM JUST
NORTHWEST OF MARSHALL...TO 15 MILES SOUTH OF MARSHALL.
 
THE LINE OF STORMS WAS MOVING EAST AT 50 MPH...AND DAMAGING WIND
SHOULD BE EXPECTED FROM MILRPY AND WALNUT GROVE...TO REDWOOD FALLS
AND MORGAN.
 
 
WINDS IN EXCESS OF 60 MPH...MAKE THIS A VERY DANGEROUS STORM.
GET READY FOR DAMAGING WINDS.  HOUSES COULD BE BADLY DAMAGED...
SO HEAD FOR THE BASEMENT.  MOBILE HOMES COULD BE OVERTURNED.
PEOPLE IN MOBILE HOMES SHOULD FLEEn TO A STORM SHELTER.

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, 8:05 PM CDTTornado WarningMPXChippewa40 min
May 7, 8:07 PM CDTTornado WarningMPXRenville38 min
May 7, 8:31 PM CDTTornado WarningMPXYellow Medicine59 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

Severe Thunderstorm Warnings in Minnesota, 1993Every severe thunderstorm warning 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.