Alert archive / Minnesota / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 3, NWS Twin Cities, MN

May 7, 1993Redwood County, Renville County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 7, 1993, 8:58 PM CDT for Redwood County, Renville County, Minnesota. It was in force for 32 min.

The area

The counties it named.

The facts

Issued
May 7, 1993, 8:58 PM CDT (01:58 UTC)
Expired
May 7, 1993, 9:30 PM CDT
In force
32 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Redwood County, MN, Renville County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 2.0 hours before the alert went out and 123 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 080204
SVRMSP
MNC129-127-080230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
858 PM CDT FRI MAY 7 1993
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  930 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MINNESOTA
 
   ...WESTERN RENVILLE COUNTY
 
IN SOUTHWEST MINNESOTA
 
   ...CENTRAL REDWOOD COUNTY
 
 
AT 900 PM CDT WEATHER RADAR INDICATED SEVERE THUNDERSTORMS CAPABLE OF
PRODUCING WINDS IN EXCESS OF 60 MILES AN HOUR AND LARGE HAIL ABOUT 8
MILES SOUTHWEST OF REDWOOD FALLS TO 10 MILES NORTHWEST OF REDWOOD FALLS.
THE STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR.
 
PEOPLE IN THE TOWNS OF REDWOOD FALLS...DANUBE AND DELHI SHOULD MOVE INDO
SAND STAY AWAY FROM WINDOWS AS THESE STORMS MOVE THROUGH BETWEEN 900PM
AND 930 PM CDT.
EDWARDS

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, 8:31 PM CDTTornado WarningMPXYellow Medicine59 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.