Alert archive / Wisconsin / Tornado Warnings in 1994

Tornado Warning 9, NWS Twin Cities, MN

May 30, 1994Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at May 30, 1994, 4:27 PM CDT for Saint Croix County, Wisconsin. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
May 30, 1994, 4:27 PM CDT (21:27 UTC)
Expired
May 30, 1994, 5:15 PM CDT
In force
48 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Saint Croix County, WI

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 9.5 hours before the alert went out and 93 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 1994-05-30Temperature 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 1994-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 197 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1954 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
197 m²/s²
0-3 km storm-relative helicity
262 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 302127
TORMSP
WIC109-302215-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
427 PM CDT MON MAY 30 1994
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  515 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL WISCONSIN
 
   ...ST CROIX COUNTY
 
RADAR INDICATES A TORNADO OVER WASHINGTON COUNTY MINNESOTA WHICH WILL
MOVE EAST INTO INTO ST CROIX COUNTY BY 440 PM.
 
CITIES IN THE PATH OF THIS TORNADO INCLUDE HUDSON...SOMERSET...BOARDMAN
...AND NEW RICHMOND.  THIS IS VERY DANGEROUS.  TAKE COVER NOW.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR STAIRWAY0 TO AVOID COLLAPSING
WALLS.  IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN A CENTRAL
ROOM SUCH AS A CLOSET OR BATHROOM ON THE LOWEST FLOOR.
USE BLANKETS...PILLOWS...OR CUSHIONS TO COVER YOUR BODY.
 
DRB

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 3:46 PM CDTSevere Thunderstorm WarningMPXPolk44 min
May 30, 4:06 PM CDTTornado WarningMPXPolk54 min
May 30, 5:09 PM CDTTornado WarningMPXPierce, Saint Croix36 min
May 30, 5:22 PM CDTSevere Thunderstorm WarningMPXDunn68 min
May 30, 5:45 PM CDTTornado WarningMPXPierce, Saint Croix30 min
May 30, 6:08 PM CDTSevere Thunderstorm WarningMPXPepin, Pierce67 min

Nearby

Tornado Warnings in Wisconsin, 1994Every tornado warning in 1994Tornadoes 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.