Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 22, NWS Green Bay, WI

July 2, 1987Columbia County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 2, 1987, 7:11 PM CDT for Columbia County, Wisconsin. It was in force for 34 min.

The area

The counties it named.

The facts

Issued
Jul 2, 1987, 7:11 PM CDT (00:11 UTC)
Expired
Jul 2, 1987, 7:45 PM CDT
In force
34 min
Issued by
NWS Green Bay, WI
Area
Whole counties

County Columbia 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 00:00Z, 0.2 hours before the alert went out and 150 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 00:00Z on 1987-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 172 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 00:00Z on 1987-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 177 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
172 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
1434 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
177 m²/s²
0-3 km storm-relative helicity
260 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSN 030011
SVRMSN
WIC021-030045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MADISON WI
711 PM CDT THU JUL 2 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 745 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

SOUTH CENTRAL WISCONSIN...COLUMBIA

AT 655 PM CDT COLUMBIA COUNTY SHERIFF REPORTED WINDS OF 50 TO 60
MPH ABOUT 5 MILES WEST OF POYNETTE OR ABOUT 18 MILES NORTH OF
MADISON.  THE ASSOCIATED STORM WAS MOVING TO THE EAST AT ABOUT 40
MPH.

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

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 2, 6:16 PM CDT, 55 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
615PM CDT THU JUL 2 1987

AT 615PM CDT STRONG THUNDERSTORMS HAVE ENTERED NORTHERN OCONTO
COUNTY SOUTHWEST THRU MEMOMINEE COUNTY AND WEST SHAWANO COUNTY.
THE STRONGEST THUNDERSTORM WAS NEAR WITTENBERG IN WEST SHAWANO COUNTY.
THESE STORMS WERE MOVING TO THE SOUTHEAST AT 30 MPH AND WILL BE
AFFECTING MOST OF THE ABOVE MENTION COUNTIES WITHIN THE HOUR.
BRIEF HEAVY DOWNPOURS ...STRONG GUSTY TWINDS...DANGEROUS LIGHTNING AND
SOME HAIL CAN BE EXPECTED WITH THE PASSAGE OF THESE STORMS.
PLH
Special weather statement, Jul 2, 7:03 PM CDT, 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
7PM CDT THU JUL 2 1987

...STRONG THUNDERSTORMS CONTINUE OVER OCONTO...SHAWANO AND
WAUPACA COUNTIES...
AT 7PM WEATHER SERVICE RADAR SHOWS A LINE OF THUNDERSTORMS FROM
SOUTHERN MARINETTE COUNTY THRU CENTRAL OCONTO COUNTY THEN SOUTHWEST
THRU CENTRAL AND EASTERN SHAWANO COUNTY AND NORTH WAUPACA COUNTY.
THE STRONGEST STORMS IN THE LINE WERE IN EASTERN SHAWANO COUNTY.
THESE STORMS WERE MOVING TO THE SOUTHEAST AT 30 MPH AND WILL BE AFFECTING
BROWN AND OUTAGAMIE COUNTIES AND THE BAY OF GREEN BAY BY 730PM CDT.
DANGEROUS LIGHTNING...HEAVY RAINS...SOME HAIL AND GUSTY WINDS CAN BE
EXPECTED WITH THE PASSAGE OF THESE THUNDERSTORMS.
PLH

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.