Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 41, NWS Twin Cities, MN

June 17, 1992Pierce County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 1992, 1:45 AM CDT for Pierce County, Saint Croix County, Wisconsin. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jun 17, 1992, 1:45 AM CDT (06:45 UTC)
Expired
Jun 17, 1992, 2:30 AM CDT
In force
45 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 00:00Z, 6.8 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 00:00Z on 1992-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 528 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 00:00Z on 1992-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
528 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
692 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
188 m²/s²
Significant tornado parameter
0.1
Supercell composite
3.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 170645
SVRMSP
WIC109-093-170730-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
145 AM CDT WED JUN 17 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 230 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE WEST CENTRAL PART OF WISCONSIN
      ST CROIX...WESTERN PIERCE

AT 135 AM GOLFBALL SIZE HAIL WAS REPORTED IN THE TOWN OF
PRESCOTT IN WESTERN PIERCE COUNTY. THE THUNDERSTORM ASSOCIATED
WITH THIS HAIL WAS 20 SOUTHEAST OF DOWNTOWN ST PAUL.

THIS THUNDERSTORM WAS MOVING EAST NORTHEAST AT 30 MILES AN HOUR
AND WILL EFFECT RIVER FALLS..ROBERTS AND BALDWIN.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL..DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON`T DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD. ALSO REMEMBER SEVERE
THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING.

WJH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 3:46 AM CDTSevere Thunderstorm WarningMPXDunn, Pepin44 min
Jun 17, 4:13 AM CDTSevere Thunderstorm WarningMPXEau Claire32 min
Jun 17, 4:59 AM CDTSevere Thunderstorm WarningMPXClark46 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1992Every severe thunderstorm warning in 1992

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.