Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 45, NWS Milwaukee, WI

September 15, 1990Ozaukee County, Washington County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Sep 15, 1990, 7:27 PM CDT for Ozaukee County, Washington County, Wisconsin. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Sep 15, 1990, 7:27 PM CDT (00:27 UTC)
Expired
Sep 15, 1990, 8:30 PM CDT
In force
63 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

Counties Ozaukee County, WI, Washington 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, 0.5 hours before the alert went out and 122 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 1990-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 706 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 1990-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
706 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
902 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMKE 160028
SVRMKE
WIC089-131-160130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
727 PM CDT  SEP 15 1990
 
THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING AND
SPECIAL MARINE WARNING EFFECTIVE UNTIL  830 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTHEAST WISCONSIN
          ...OZAUKEE...WASHINGTON
 
AND ADJOINING COASTAL WATERS OF LAKE MICHIGAN.
 
AT 715 PM 52 MPH WINDS AND TREES DOWN WERE REPORTED IN CAMPBELLSPORT
AND HAIL COVERING THE GROUND UP TO ONE HALF INCH IN DIAMETER WAS
REPORTED IN NORTHEAST DODGE COUNTY. THE STORM WAS MOVING TOWARD THE
SOUTHEAST AT ABOUT 35 MPH. CITIES IN THE PATH OF THE STORM INCLUDE
WEST BEND.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

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, Sep 15, 6:11 PM CDT, 1 hour 16 minutes before
WIZ010-011-014-015-018-019-160100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MADISON WI
600 PM CDT SAT SEP 15 1990

....STRONG THUNDERSTORMS IN CENTRAL WISCONSIN....

AT 554 PM CDT WAUSHARA COUNTY SHERIFF REPORTED THAT 3/8 TO 1/2 INCH
HAIL WAS REPORTED IN SAXEVILLE BY THE SAXEVILLE FIRE DEPARTMENT.  RADAR
INDICATED A STRONG THUNDERSTORM WITH VERY HEAVY RAIN IN THE AREA.

THIS THUNDERSTORM WAS PART OF A LARGER AREA OF SHOWERS AND THUNDERSTORMS
IN CENTRAL WISCONSIN NORTH OF A LINE FROM 10 MILES SOUTH OF RICHLAND
CENTER...TO FOND DU LAC...TO 15 SOUTHEAST OF GREEN BAY.  THE STRONGEST
STORMS WERE IN WAUSHARA COUNTY 10 MILES EAST OF WAUTOMA AND IN GREEN LAKE
COUNTY 5 MILES SOUTHEAST OF PRINCETON.

THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR.  BRIEF HEAVY
DOWNPOURS...GUSTY WINDS...AND SOME SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
                                                                             [

PIERCE
Special weather statement, Sep 15, 7:08 PM CDT, 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
700 PM CDT SAT SEP 15 1990

...STRONG THUNDERSTORM IN DODGE COUNTY...MOVING INTO WASHINGTON COUNTY...

AT 700 PM...RADAR SHOWED A STRONG THUNDERSTORM IN NORTHERN DODGE
COUNTY.  THIS STORM IS MOVING SOUTHEAST AT 35 MPH AND WILL BE PASSING
OVER THE CITIES OF MAYVILLE AND LOMIRA BY 715 PM.

AT 645 PM THE DODGE COUNTY SHERIFFS DEPARTMENT REPORTED PEA SIZE HAIL
AND BRIEF DOWNPOURS WITH THIS STORM OVER THE CITY OF WAUPUN IN EXTREME
NORTHERN DODGE COUNTY.

THIS STORM WAS PART OF A BAND OF SHOWERS AND THUNDERSTORMS MOVING INTO
SOUTHEAST WISCONSIN.  SOME AREAS IN SOUTHEAST WISCONSIN CAN EXPECT SMALL
HAIL..BRIEF GUSTY WINDS AND HEAVY RAIN WITH A FEW OF THE THUNDERSTORMS
THIS EVENING.

HELMAN

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1990Every severe thunderstorm warning in 1990

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.