Alert archive / Wisconsin / Tornado Warnings in 1987

Tornado Warning 2, NWS Milwaukee, WI

May 27, 1987Walworth County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at May 27, 1987, 5:28 PM CDT for Walworth County, Wisconsin. It was in force for 32 min.

The area

The counties it named.

The facts

Issued
May 27, 1987, 5:28 PM CDT (22:28 UTC)
Expired
May 27, 1987, 6:00 PM CDT
In force
32 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

County Walworth 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, 10.5 hours before the alert went out and 204 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 1987-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 94 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 1987-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 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
94 J/kg
Mixed-layer CIN
-163 J/kg
Mixed-layer LCL
1262 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
123 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 272228
TORMKE
WIC127-272300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE MILWAUKEE WI
528 PM CDT WED MAY 27 1987

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

SOUTHEAST WISCONSIN...WALWORTH

AT 525 PM A CONFIRMED FUNNEL CLOUD HAS BEEN SIGHTED 6 MILES
SOUTH OF WHITEWATER MOVING NORTHEAST AT 30 MPH.

PEOPLE IXN THE PATH OF THIS STORM SHOULD TAKE COVER.

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.

HENTZ

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 9:50 PM CDTSevere Thunderstorm WarningMKXJefferson10 min
May 27, 3:25 PM CDTSevere Thunderstorm WarningMKXDodge, Fond du Lac, Jefferson65 min
May 27, 4:34 PM CDTSevere Thunderstorm WarningMKXFond du Lac41 min
May 27, 4:37 PM CDTSevere Thunderstorm WarningMKXForest, Langlade53 min

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.