Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 9, NWS Twin Cities, MN

April 26, 1994Pierce County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 26, 1994, 12:19 PM CDT for Pierce County, Saint Croix County, Wisconsin. It was in force for 21 min.

The area

The counties it named.

The facts

Issued
Apr 26, 1994, 12:19 PM CDT (17:19 UTC)
Expired
Apr 26, 1994, 12:40 PM CDT
In force
21 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Pierce County, WI, Saint Croix County, WI

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 5.3 hours before the alert went out and 92 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 1994-04-26Temperature 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 1994-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -315 square meters per square second.1939587897117136156Sfc1 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
511 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
-315 m²/s²
0-3 km storm-relative helicity
-952 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 261720
SVRMSP
WIC093-109-261800-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
1219 PM CDT TUE APR 26 1994
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  100 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL WISCONSIN
 
   ...NORTHEASTERN PIERCE COUNTY...ST CROIX COUNTY
 
AT 1201 PM...ONE AND ONE QUARTER INCH HAIL WAS REPORTED IN ELLSWORTH.
THE THUNDERSTORM PRODUCING THE LARGE HAIL WAS LOCATED FROM NEAR BALDWIN
TO NORTHEAST OF ELLSWORTH...NEAR THE TOWN OF SPRING VALLEY...ABOUT 20
MILES WEST OF MENOMONIE.
 
THE STORMS WERE MOVING TO THE NORTH AT 30 MPH.
 
SEVElRE 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.
 DWE
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 12:31 PM CDTSevere Thunderstorm WarningMPXPolk44 min
Apr 26, 12:40 PM CDTSevere Thunderstorm WarningMPXDunn50 min
Apr 26, 12:59 PM CDTSevere Thunderstorm WarningMPXBarron46 min
Apr 26, 1:09 PM CDTTornado WarningMPXBarron46 min
Apr 26, 1:37 PM CDTSevere Thunderstorm WarningMPXRusk36 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 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.