Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 40, NWS Green Bay, WI

July 29, 1987Waushara County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 29, 1987, 1:25 PM CDT for Waushara County, Wisconsin. It was in force for 27 min.

The area

The counties it named.

The facts

Issued
Jul 29, 1987, 1:25 PM CDT (18:25 UTC)
Expired
Jul 29, 1987, 1:52 PM CDT
In force
27 min
Issued by
NWS Green Bay, WI
Area
Whole counties

County Waushara 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, 6.4 hours before the alert went out and 100 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 1987-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 633 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 1987-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 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
633 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
789 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
154 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSN 291825 RRA
SVRMSN
WIC047-077-137-291915-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MADISON WI
125 PM CDT WED JUL 29 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 215 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTH CENTRAL WISCONSIN...GREEN-LAKE...MARQUETTE AND WAUSHARA

AT 120 PM CDT A SEVERE THUNDERSTORM WAS LOCATED ABOUT 10 MILES WEST
OF WESTFIELD WISCONSIN MOVING TO THE SOUTHEAST AT ABOUT 30 MPH.
THIS STORM SHOULD AFFECT WAUTOMA, MONTELLO, GREEN LAKE AND THE
BERLIN AREAS AS IT MOVE TO THE SOUTHEAST.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS..LARGE HAIL AND DANGEROUS
LIGHTNING. IF THREATENING WEATHER APPROACHES TAKE SHELTER.

REMEMBER..SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
A TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT.

ADDISON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 1:25 PM CDTSevere Thunderstorm WarningGRBGreen Lake, Marquette50 min
Jul 29, 6:17 PM CDTSevere Thunderstorm WarningGRBSauk43 min
Jul 29, 6:37 PM CDTSevere Thunderstorm WarningGRBColumbia, Dane53 min
Jul 29, 6:54 PM CDTSevere Thunderstorm WarningGRBRock51 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1987Every severe thunderstorm warning 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.