Alert archive / Wisconsin / Tornado Warnings in 1986

Tornado Warning 3, NWS Green Bay, WI

July 11, 1986Dane County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Jul 11, 1986, 5:08 PM CDT for Dane County, Wisconsin. It was in force for 52 min.

The area

The counties it named.

The facts

Issued
Jul 11, 1986, 5:08 PM CDT (22:08 UTC)
Expired
Jul 11, 1986, 6:00 PM CDT
In force
52 min
Issued by
NWS Green Bay, WI
Area
Whole counties

County Dane 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.1 hours before the alert went out and 189 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, Green Bay/Straub, WI at 12:00Z on 1986-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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, Green Bay/Straub, WI at 12:00Z on 1986-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 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
3 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
748 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
128 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 112208
TORMSN
WIC025-112300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE MADISON WI
ISSUED BY MILWAUKEE WI
508 PM CDT FRI JUL 11 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 600 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

SOUTH CENTRAL WISCONSIN...DANE

AT 455PM CDT...THE WEATHER SERVICE OFFICE AT MADISON SPOTTED
A TORNADO ONE AND ONE HALF MILES EAST OF THE AIRPORT. THE
TORNADO WAS MOVING SOUTHEAST AT 25 MPH.

IF THREATENING WEATHER APPROACHES YOU...TAKE COVER IMMEDIATELY.
A BASEMENT..INTERIOR HALLWAY OR ROOM ON THE LOWEST FLOOR IS THE
SAFEST PLACE IN MOST BUILDINGS. GET UNDER SOMETHING STURDY.

GARCIA

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 6:11 PM CDTSevere Thunderstorm WarningGRBRock34 min

Nearby

Tornado Warnings in Wisconsin, 1986Every tornado warning in 1986Tornadoes 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.