Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 161, NWS Twin Cities, MN

July 31, 1994Olmsted County, Wabasha County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 31, 1994, 4:15 PM CDT for Olmsted County, Wabasha County, Minnesota. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jul 31, 1994, 4:15 PM CDT (21:15 UTC)
Expired
Jul 31, 1994, 5:00 PM CDT
In force
45 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Olmsted County, MN, Wabasha County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 9.3 hours before the alert went out and 129 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 1994-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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 1994-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
4 J/kg
Mixed-layer CIN
-306 J/kg
Mixed-layer LCL
1222 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRST 312120 RRA
SVRRST
MNC109-157-312200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
415 PM CDT SUN JUL 31 1994
 
THE NATIONAL WEATHER SERVICE IN ROCHESTER MN HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST MINNESOTA
 
   ...OLMSTED COUNTY...SOUTHERN WABASHA COUNTY
 
AT 412 PM RADAR INDICATED A SEVERE THUNDERSTORM OVER OLMSTED AND WABASHA
COUNTIES. THE STRONGEST CELLS WERE JUST TO THE NORTHEAST OF ROCHESTER.
HAIL OF ONE AND A QUARTER INCHES WAS REPORTED AT THE ROCHESTER AIRPORT.
MOVEMENT OF THESE STORMS WAS TO THE EAST AT 20 MPH. CITIES IN THE PATH
OF THESE STORMS INCLUDE EYOTA...PLAINVIEW...AND STEWARTVILLE.
 
IF YOU ARE IN THE PATH OF THESE STORMS SEEK SHELTER IMMEDIATELY.
 
TEAL
 
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.
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 4:56 AM CDTSevere Thunderstorm WarningMPXMeeker34 min
Jul 31, 5:58 AM CDTSevere Thunderstorm WarningMPXWright32 min
Jul 31, 5:05 PM CDTSevere Thunderstorm WarningMPXFillmore, Mower, Olmsted40 min
Jul 31, 5:41 PM CDTSevere Thunderstorm WarningMPXFreeborn, Mower34 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.