Alert archive / Minnesota / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 80, NWS Twin Cities, MN

August 9, 1993Faribault County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 9, 1993, 5:30 PM CDT for Faribault County, Minnesota. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Aug 9, 1993, 5:30 PM CDT (22:30 UTC)
Expired
Aug 9, 1993, 6:15 PM CDT
In force
45 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Faribault County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 10.5 hours before the alert went out and 134 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 12:00Z on 1993-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1750 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 12:00Z on 1993-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
1750 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
649 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 092231 RRA
SVRRST
MNC043-092315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MINNESOTA
ISSUED BY MINNEAPOLIS MN
530 PM CDT MON AUG 9 1993
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 615 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL MINNESOTA
 
   ...FARIBAULT COUNTY
 
AT 515 PM...A SEVERE THUNDERSTORM WAS LOCATED NEAR BLUE EARTH IN WEST
CENTRAL FAIRBAULT COUNTY. THIS THUNDERSTORM WAS MOVING TO THE SOUTHEAST
AT 20 MPH. SOME CITIES IN THE PATH OF THIS STORM INCLUDE BLUE EARTH AND
BRICELYN.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE HAIL...
DEADLY LIGHTNING...AND VERY HEAVY RAIN.  FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM.  PEOPLE IN MOBILE HOMES SHOULD GO
TO A STORM SHELTER.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 9, 4:40 PM CDT, 50 minutes before
WIZ003-006-MNZALL-092245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
440 PM CDT MON AUG 9 1993

...STRONG THUNDERSTORMS OVER SOUTH CENTRAL MINNESOTA...

STRONG THUNDERSTORMS HAD DEVELOPED OVER EXTREME SOUTH CENTRAL MINNESOTA
AT 430 PM.  THE MOST POWERFUL STORMS WERE IN THE ALBERT LEA...AUSTIN
AREA...JUST NORTH OF THE IOWA BORDER.

WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE THUNDERSTORMS...
THEY STILL HAVE THE POTENTIAL TO PRODUCE FREQUENT DEADLY LIGHTNING...
STRONG GUSTY WINDS TO ABOUT 45 MILES AN HOUR...SMALL HAIL...AND
VERY HEAVY RAINFALL.  PERSONS ENGAGED IN OUTDOOR ACTIVITIES SUCH AS
BOATING OR OPERATING FARM EQUIPMENT SHOULD BE READY TO SEEK SAFE
SHELTER.

MOVEMENT WAS TO THE EAST AT 35 MILES AN HOUR.  THEY SHOULD REACH THE
TOWNS OF GLENVILLE...LE ROY...AND HARMONY BY ABOUT 515 PM.

SHOWERS AND THUNDERSTORMS WERE ALSO OCCURRING OVER SOUTH CENTRAL
AND SOUTHEAST MINNESOTA SOUTH OF A LINE FROM NEW ULM TO LE SUEUR TO
REDWING TO LA CROSSE.  MOVEMENT WAS TO THE EAST AT 35 MILES AN HOUR.
KRAFT
Special weather statement, Aug 9, 4:40 PM CDT, 50 minutes before
WIZ003-006-MNZALL-092245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
440 PM CDT MON AUG 9 1993

...STRONG THUNDERSTORMS OVER SOUTH CENTRAL MINNESOTA...

STRONG THUNDERSTORMS HAD DEVELOPED OVER EXTREME SOUTH CENTRAL MINNESOTA
AT 430 PM.  THE MOST POWERFUL STORMS WERE IN THE ALBERT LEA...AUSTIN
AREA...JUST NORTH OF THE IOWA BORDER.

WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE THUNDERSTORMS...
THEY STILL HAVE THE POTENTIAL TO PRODUCE FREQUENT DEADLY LIGHTNING...
STRONG GUSTY WINDS TO ABOUT 45 MILES AN HOUR...SMALL HAIL...AND
VERY HEAVY RAINFALL.  PERSONS ENGAGED IN OUTDOOR ACTIVITIES SUCH AS
BOATING OR OPERATING FARM EQUIPMENT SHOULD BE READY TO SEEK SAFE
SHELTER.

MOVEMENT WAS TO THE EAST AT 35 MILES AN HOUR.  THEY SHOULD REACH THE
TOWNS OF GLENVILLE...LE ROY...AND HARMONY BY ABOUT 515 PM.

SHOWERS AND THUNDERSTORMS WERE ALSO OCCURRING OVER SOUTH CENTRAL
AND SOUTHEAST MINNESOTA SOUTH OF A LINE HFROM NEW ULM TO LE SUEUR TO
REDWING TO LA CROSSE.  MOVEMENT WAS TO THE EAST AT 35 MILES AN HOUR.
KRAFT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 6:57 AM CDTSevere Thunderstorm WarningMPXFillmore, Mower48 min
Aug 9, 6:25 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn35 min

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.