Alert archive / Wisconsin / Tornado Warnings in 1986

Tornado Warning 4, NWS Green Bay, WI

July 12, 1986Adams County, Marquette County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Jul 12, 1986, 2:28 PM CDT for Adams County, Marquette County, Wisconsin. It was in force for 52 min.

The area

The counties it named.

The facts

Issued
Jul 12, 1986, 2:28 PM CDT (19:28 UTC)
Expired
Jul 12, 1986, 3:20 PM CDT
In force
52 min
Issued by
NWS Green Bay, WI
Area
Whole counties

Counties Adams County, WI, Marquette 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, 7.5 hours before the alert went out and 135 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 1986-07-12Temperature 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, Green Bay/Straub, WI at 12:00Z on 1986-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
660 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
32 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 KMSN 121928
TORMSN
WIC001-077-122030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE MADISON WI
228 PM CDT SAT JUL 12 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 330 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

SOUTH CENTRAL WISCONSIN...SOUTHERN ADAMS AND MARQUETTE

AT 224 PM CDT RADAR INDICATED A POSSIBLE TORNADO IN ADAMS COUNTY
ABOUT 10 MILES SOUTH OF ADAMSC MOVING TO THE EAST NORTHEAST AT ABOUT
25 MILES AN HOUR.

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.

 ADDISON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 4:53 PM CDTTornado WarningGRBColumbia, Sauk37 min
Jul 12, 5:20 PM CDTTornado WarningGRBColumbia40 min
Jul 12, 5:46 PM CDTSevere Thunderstorm WarningGRBGreen29 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.