Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 45, NWS Milwaukee, WI

September 28, 1986Racine County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Sep 28, 1986, 6:17 PM CDT for Racine County, Wisconsin. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Sep 28, 1986, 6:17 PM CDT (23:17 UTC)
Expired
Sep 28, 1986, 7:15 PM CDT
In force
58 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

County Racine 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, 11.3 hours before the alert went out and 196 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 1986-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 583 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 1986-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.1939587897Sfc1 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
583 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
883 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMKE 282317
SVRMKE
WIC079-101-290015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MILWAUKEE WI
617 PM CDT SUN SEP 28 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND 
SPECIAL MARINE WARNING EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE 
FOLLOWING COUNTIES OF

SOUTHEAST WISCONSIN...MILWAUKEE AND RACINE
...INCLUDING THE ADJACENT COASTAL WATERS OF LAKE MICHIGAN.       
.                      

AT 615 PM CDT...WEATHER RADAR INDICATED SEVERE THUNDERSTORMS
MOVING INTO WESTERN RACINE AND MILWAUKEE COUNTIES.

THE STORMS ARE EXPECTED TO MOVE THROUGH THESE COUNTIES AND OUT
OVER THE COASTAL WATERS OF LAKE MICHIGAN.

THE STORMS WERE EAST NORTHEAST AT 40 MPH.

AT 610 PM...A MUSKEGO OBSERVER REPORTED WINDS TO 35 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.

GARCIA

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 5:10 PM CDTSevere Thunderstorm WarningMKXJefferson50 min
Sep 28, 5:44 PM CDTTornado WarningMKXJefferson, Walworth46 min
Sep 28, 6:00 PM CDTTornado WarningMKXWaukesha30 min
Sep 28, 6:09 PM CDTSevere Thunderstorm WarningMKXWalworth36 min
Sep 28, 6:17 PM CDTSevere Thunderstorm WarningMKXMilwaukee36 min
Sep 28, 6:44 PM CDTSevere Thunderstorm WarningMKXOzaukee18 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.