Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 7, NWS Twin Cities, MN

April 24, 1994Fillmore County, Mower County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 24, 1994, 6:29 PM CDT for Fillmore County, Mower County, Minnesota. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Apr 24, 1994, 6:29 PM CDT (23:29 UTC)
Expired
Apr 24, 1994, 7:00 PM CDT
In force
31 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Fillmore County, MN, Mower County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 11.5 hours before the alert went out and 161 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 1994-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1994-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1686 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
140 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRST 242334
SVRRST
MNC045-099-250000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
629 PM CDT SUN APR 24 1994
 
THE NATIONAL WEATHER SERVICE IN ROCHESTER MN HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  700 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST MINNESOTA
 
   ...WESTERN FILLMORE COUNTY...MOWER COUNTY
 
THIS WARNING INCLUDES THE TOWNS OF OSTRANDER...SPRING VALLEY...LE
ROY...AND TAOPI.
 
AT 625 PM RADAR INDICATED A SEVERE THUNDERSTORM 23 MILES SOUTHEAST OF
AUSTING NEAR LE ROY.  THE STORM WAS MOVING EAST AT 30 MPH TOWARD
OSTRANDER AND SPRING VALLEY.
 
AS OF 625PM THERE HAVE BEEN NUMEROUS REPORTS OF PEA TO MARBLE SIZE HAIL
IN MOWER COUNTY AT SPRING VALLEY...OAKLAND...WEST OF AUSTIN AT THE REST
AREA ALONG I-90.
 
MOTORISTS ALONG I-90 BETWEEN AUSTIN AND DEXTER SHOULD BE PREPARED FOR
SEVERE THUNDERSTORMS.
 
 
 
WHEN SEVERE THUNDERSTORMS ARE OCCURRING...STAY INSIDE A STRONG
BUILDING.  PROTECT YOURSELF FROM DAMAGING WINDS OR HAIL BY
KEEPING AWAY FROM WINDOWS.  LISTEN TO YOUR RADIO OR TELEVISION...
BUT TURN OFF ALL OTHER ELECTRICAL APPLIANCES.  DO NOT USE THE
PHONE DURING PERIODS OF FREQUENT LIGHTNING.
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 24, 5:15 PM CDTSevere Thunderstorm WarningMPXMower30 min
Apr 24, 5:45 PM CDTSevere Thunderstorm WarningMPXFillmore, Mower30 min
Apr 24, 5:57 PM CDTSevere Thunderstorm WarningMPXFreeborn33 min
Apr 24, 6:14 PM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin, Wright46 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.