Alert archive / Wisconsin / Tornado Warnings in 1987

Tornado Warning 6, NWS Green Bay, WI

September 16, 1987Dane County, Green County, Wisconsin

NWS Green Bay, WI issued this tornado warning at Sep 16, 1987, 5:07 PM CDT for Dane County, Green County, Wisconsin. It was in force for 23 min.

The area

The counties it named.

The facts

Issued
Sep 16, 1987, 5:07 PM CDT (22:07 UTC)
Expired
Sep 16, 1987, 5:30 PM CDT
In force
23 min
Issued by
NWS Green Bay, WI
Area
Whole counties

Counties Dane County, WI, 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.1 hours before the alert went out and 212 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 1987-09-16Temperature 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 1987-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.1939Sfc1 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
-76 J/kg
Mixed-layer LCL
556 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
63 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 162207
TORMSN
WIC025-045-162230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE MADISON WI
507 PM CDT WED SEP 16 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 530 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

SOUTH CENTRAL WISCONSIN...SOUTHERN DANE AND NORTHERN GREEN

AT 4:55PM CDT NUMBEROUS REPORTS OF FUNNELS FROM THE GREEN COUNTY
SHERIFF FROM CITIZENS NEAR NEW GLAROUS IN GREEN COUNTY..THE RADAR
INDICATED STRONG THUNDERSTORMS IN THE AREA WHILE MOVING TO THE
NORTHEAST AT AROUND 10 MPH..NEW GLARSOUS IS ABOUT 20 MILES SOUTH-
WEST OF MADISON.

IF THREATENING WEATHER APPROACHES YOU..TAKE COVER IMMEDIATELY.
IN SCHOOLS..HOSPITALS..FACTORIES AND PUBLIC PLACES..MOVE TO
PREDESIGNATED SHELTER AREAS.  INTERIOR HALLWAYS ON THE LOWEST FLOORS
ARE BEST.

GRIMM

Nearby

Tornado Warnings in Wisconsin, 1987Every tornado warning in 1987Tornadoes in 1987

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.