Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 29, NWS Milwaukee, WI

July 6, 1987Dodge County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 6, 1987, 3:39 PM CDT for Dodge County, Wisconsin. It was in force for 51 min.

The area

The counties it named.

The facts

Issued
Jul 6, 1987, 3:39 PM CDT (20:39 UTC)
Expired
Jul 6, 1987, 4:30 PM CDT
In force
51 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

County Dodge 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, 8.7 hours before the alert went out and 128 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 1987-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1987-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
668 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
7 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 062039
SVRMKE
WIC027-062130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE WI
339 PM CDT MON JUL 6 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 430 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

SOUTHEAST WISCONSIN...DODGE

AT 335 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY RADAR IN
COLUMBIA COUNTY NEAR COLUMBUS...ABOUT 25 MILES NORTHEAST OF MADISON.
THIS STORM WAS MOVING NORTHEAST AT 30 MPH AND WILL MOVE ACROSS
DODGE COUNTY.  TOWNS IN OR NEAR THE PATH OF THIS STORM ARE FOX LAKE
..MAYVILLE...HORICON...AND JUNEAU.

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

HAASE

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 6, 2:10 PM CDT, 1 hour 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MADISON WI
205 PM CDT MON JUL 6 1987

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 7 PM CDT FOR PORTIONS
OF WESTERN AND SOUTHERN WISCONSIN...

AT 200 PM CDT WEATHER RADAR INDICATED A LINE OF SHOWERS AND SOME
THUNDERSTORMS EXTENDING FROM 10 MILES WEST OF MADISON TO 25 MILES
EAST OF LACROSSE.  THIS LINE WAS MOVING TO THE EAST AT ABOUT 30 MPH.

A SECOND AREA OF SHOWERS AND THUNDERSTORMS WAS LOCATED OVER EXTREME
SOUTHWEST WISCONSIN AND NORTHWESTERN ILLIONIS WITH THE HEAVIEST RAINFALL
AREA LOCATED 25 MILES EAST SOUTHEAST OF DUBUQUE IOWA.  THIS AREA WAS
ALSO MOVING TO THE EAST AT ABOUT 30 MPH.

ONLY HEAVY RAIN HAS BEEN REPORTED FROM SOME OF THE STRONG THUNDERSTORMS
THUS NO SEVERE HAS BEEN REPORTED AS OF 200 PM CDT.

ADDISON
Special weather statement, Jul 6, 2:37 PM CDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MADISON WI
235 PM CDT MON JUL 6 1987

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 7 PM CDT FOR PORTIONS
OF WESTERN AND SOUTHERN WISCONSIN...

AT 230 PM CDT WEATHER RADAR INDICATED A BROAD AREA OF SHOWERS AND SOME
THUNDERSTORMS ABOUT 50 MILES WIDE EXTENDING FROM 35 MILES NORTH OF
MOLINE ILLINOIS TO 10 MILES NORTHWEST OF MADISON TO 25 MILES NORTHEAST
OF LOCROSSE.  THE ENTIRE AREA WAS MOVING TO THE EAST AT ABOUT 30 MPH.

THE HEAVIEST RAINFALL AREAS WERE LOCATED BETWEEN SAUK CITY AND LODI
OR ABOUT 20 WEST NORTHWEST TO 15 MILES NORTH OF MADISON.  ALSO A VERY
HEAVY RAIN AREA WAS NOTED 5 MILES SOUTH OF LENA ILLINOIS OR ABOUT 35
MILES WEST OF ROCKFORD.

VERY HEAVY RAIN HAS BEEN REPORTED...NOT MUCH WIND AND NO REPORTS OF
ANY SEVERE WEATHER AS OF 230 PM CDT.

ADDISON
Special weather statement, Jul 6, 2:59 PM CDT, 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE WI
255 PM CDT MON JUL 6 1987

...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR CLARK AND WOOD COUNTIES
   OF CENTRAL WISCONSIN UNTIL 700 PM...

AT 250 PM CDT...THUNDERSTORMS WERE IN WESTERN CLARK COUNTY OF CENTRAL
WISCONSIN.  AT THE PRESENT TIME THESE STORMS WERE NOT STRONG HOWEVER...
STRONG THUNDERSTORMS WERE LOCATED IN WESTERN AND SOUTHWEST WISCONSIN.

STRONG THUNDERSTORMS ARE EXPECTED TO MOVE INTO CLARK AND WOOD COUNTIES
OF CENTRAL WISCONSIN BY 330 PM.

ANY THUNDERSTORM THAT DEVELOPS CAN PRODUCE VERY HEAVY RAIN...STRONG
WINDS AND POSSIBLE LARGE HAIL.

YOU SHOULD STAY ALERT TO THE DEVELOPMENT OF STRONG THUNDERSTORMS AND
SEEK SHELTER IF THREATENING WEATHER APPROACHES.
HAASE
Special weather statement, Jul 6, 3:05 PM CDT, 34 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE WI
303 PM CDT MON JUL 6 1987

...STRONG THUNDERSTORMS MOVING INTO DODGE AND JEFFERSON COUNTIES...

AT 300 PM CDT...WEATHER RADAR SHOWED AN AREA OF STRONG THUNDERSTORMS IN
EASTERN COLUMBIA AND NORTHEAST DANE COUNTY IN SOUTHERN WISCONSIN.

THE STORMS WERE MOVING TO THE EASTNORTHEAST AT 30 MPH AND WILL BE
MOVING INTO PORTIONS OF WESTERN DODGE AND NORTHWESTERN JEFFERSON
COUNTIES BETWEEN 3 AND 330 PM.

THESE STRONG THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN...GUSTY WINDS
AND POSSIBLE SMALL HAIL.

PERSONS IN DODGE AND JEFFERSON COUNTIES SHOULD BE ALERT TO RAPIDLY
CHANGING WEATHER CONDITIONS AS THESE STORMS APPROACH.

FIELD
Special weather statement, Jul 6, 3:06 PM CDT, 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MADISON WI
305 PM CDT MON JUL 6 1987

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 7 PM CDT FOR PORTIONS
OF WESTERN AND SOUTHERN WISCONSIN...

AT 300 PM CDT WEATHER RADAR INDICATED A 75 MILE WIDE AREA OF SHOWERS AND
THUNDERSTORMS EXTENDING FROM 35 MILES SOUTHWEST OF ROCKFORD ILLINOIS TO
MADISON AND TO 35 MILES NORTHEAST OF LACROSSE.  THE ENTIRE AREA WAS
MOVING TO THE EAST AT ABOUT 20 MPH.

THE HEAVIEST RAINFALL AREAS WERE LOCATED OVER ELROY OR 45 MILES EAST OF
LACROSSE...JUST NORTHEAST OF LODI OR ABOUT 20 MILES NORTH OF MADISON...
ANOTHER LOCATED 5 MILES NORTHWEST OF MT. HOREB OR ABOUT 20 MILES WEST
MADISON AND A VERY HEAVY RAINFALL AREA LOCATED 15 MILES WEST OF ROCKFORD
ILLINOIS.

VERY HEAVY RAIN HAS BEEN REPORTED...NOT MUCH WIND AND NO REPORTS OF
ANY SEVERE WEATHER AS OF 300 PM CDT.

ADDISON
Special weather statement, Jul 6, 3:35 PM CDT, 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MADISON WI
335 PM CDT MON JUL 6 1987

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 7 PM CDT FOR PORTIONS
OF WESTERN AND SOUTHERN WISCONSIN...

AT 330 PM CDT WEATHER RADAR INDICATED A 75 MILE WIDE AREA OF SHOWERS AND
THUNDERSTORMS EXTENDING FROM 25 MILES SOUTHWEST OF ROCKFORD ILLINOIS TO
20 MILES EAST OF MADISON AND TO 45 MILES NORTHEAST OF LACROSSE.  THE
ENTIRE AREA WAS MOVING TO THE EAST AT ABOUT 30 MPH.

THE HEAVIEST RAINFALL AREAS WERE LOCATED 5 MILES EAST OF ELROY OR 45
MILES EAST OF LACROSSE...A SECOND JUST SOUTH OF RIO OR ABOUT 20 MILES
NORTH NORTHEAST OF MADISON...AND A HEAVY RAINFALL AREA LOCATED OVER
ROCKFORD ILLINOIS.

AT 320 PM CDT THE JUNEAU COUNTY SHERIFF REPORTED WINDS OF 40 TO 45 MPH
AT ELROY ALONG WITH VERY HEAVY RAINS.  NO DAMAGE WAS REPORTED.  NO
OTHER REPORTS OF SEVERE WSATHER HAVE BEEN RECEIVED AS OF 330 PM CDT.

ADDISON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 4:59 PM CDTSevere Thunderstorm WarningMKXWaukesha41 min
Jul 6, 5:23 PM CDTSevere Thunderstorm WarningMKXMilwaukee37 min
Jul 6, 5:44 PM CDTSevere Thunderstorm WarningMKXMilwaukee, Waukesha51 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.