Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 4, NWS Green Bay, WI

April 25, 1986Green County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Apr 25, 1986, 8:21 PM CST for Green County, Wisconsin. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Apr 25, 1986, 8:21 PM CST (02:21 UTC)
Expired
Apr 25, 1986, 9:03 PM CST
In force
42 min
Issued by
NWS Green Bay, WI
Area
Whole counties

County Green County, WI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Peoria Regional, IL (KPIA), launched 00:00Z, 2.4 hours before the alert went out and 224 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, Peoria Regional, IL at 00:00Z on 1986-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1042 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, Peoria Regional, IL at 00:00Z on 1986-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
1042 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
2510 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
154 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMKE 260221
SVRMSN
WIC025-045-105-260330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MADISON WI
ISSUED BY MILWAUKEE WI
821 PM CST FRI APR 25 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 930 PM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTH CENTRAL WISCONSIN...EASTERN DANE...GREEN AND ROCK

AT 815 PM CST RADAR INDICATED SEVERE THUNDERSTORMS WITH 3/4 INCH
HAIL OR GREATER MOVING OUT OF NORTHERN ILLINOIS INNTO ROCK AND
GREEN COUNTIES. ALSO RECEIVING NUMEROUS REPORTS OF 1 INCH OR
GREATER HAIL OVER EASTERN DANE COUNTY INCLUDING THE CITY OF
MADISON. THUNDERSTORMS ARE MOVING NORTH NORTHEAST AT 40 MPH.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND
DEADLY LIGHTNING. TORNADOES CAN ALSO DEVELOP FROM SEVERE
THUNDERSTORMS.   IF THREATENING WEATHER APPROACHES...TAKE SHELTER
IMMEDIATELY.

 HASSE/TZ

The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 25, 7:31 PM CSTSevere Thunderstorm WarningGRBColumbia, Dane, Sauk59 min
Apr 25, 7:37 PM CSTSevere Thunderstorm WarningGRBDane, Green68 min
Apr 25, 7:58 PM CSTSevere Thunderstorm WarningGRBWaushara62 min
Apr 25, 8:21 PM CSTSevere Thunderstorm WarningGRBDane, Rock69 min
Apr 25, 8:35 PM CSTSevere Thunderstorm WarningGRBAdams55 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1986Every severe thunderstorm warning in 1986

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.