Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 29, NWS Milwaukee, WI

July 18, 1990Kenosha County, Racine County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 18, 1990, 2:20 PM CDT for Kenosha County, Racine County, Wisconsin. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Jul 18, 1990, 2:20 PM CDT (19:20 UTC)
Expired
Jul 18, 1990, 3:00 PM CDT
In force
40 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

Counties Kenosha County, WI, 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, 7.3 hours before the alert went out and 205 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 1990-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1306 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 1990-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 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
1306 J/kg
Mixed-layer CIN
-170 J/kg
Mixed-layer LCL
919 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
165 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 181932 COR
SVRMKE
WIC059-101-182000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED ...CORRECTION...
SEVERE THUNDERSTORM WARNING AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
230 PM CDT WED JUL 18 1990

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  300 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...

IN SOUTHEAST WISCONSIN
 ...KENOSHA...RACINE...AND ADJACENT COASTAL WATERS OF LAKE MICHIGAN...

AT 220 PM CDT A LINE OF SEVERE THUNDERSTORMS WAS LOCATED FROM CENTRAL
RACINE COUNTY NEAR RAYMOND...ABOUT 15 MILES NORTHWEST OF RACINE TO
WESTERN KENOSHA COUNTY. THE LINE WAS MOVING SOUTHEAST AT 35 MPH. HIGH
WINDS AND HAIL IS LIKELY WITH THESE STORMS.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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 18, 10:31 AM CDT, 3 hours 49 minutes before
WIZ010-011-014-015-018-019-181530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MADISON WI
10:30 AM CDT WED JULY 18 1990

...THUNDERSTORMS ENTERING WEST CENTRAL WISCONSIN...

AT10:20 AM CDT..RADAR DETECTED AN AREA OF SHOWERS AND A FEW HEAVY THUNDER-
STORMS WEST CENTRAL WISCONSIN. THE SHOWERS AND THUNDERSTORMS WERS LOCATED
40 MILES NORTHWEST OF MADISON TO 40 MILES NORTHWEST OF DUBUQUE IOWA. THE
HEAVIEST STORM WERE LOCATED JUST NORTH OF RICHLAND CENTER OR ABOUT 40 MILES
NORTHWEST OF MADISON. THESE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT
30 MILES AN HOUR. BRIEF HEAVY RAIN AND PEA SIZE HAIL CAN BE EXPECTED FROM
FROM THESE STORMS.

GRIMM
Special weather statement, Jul 18, 11:54 AM CDT, 2 hours 26 minutes before
WIZ016-WIZ017-181730

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1145 AM CDT WED JUL 18 1990

...THUNDERSTORMS PRODUCING HEAVY RAIN IN DODGE COUNTY...

AT 1145 AM...WEATHER RADAR SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS
IN DODGE COUNTY MOVING EAST AT 35 MPH AND ENTERING WASHINGTON AND
JEFFERSON COUNTIES.

THE STRONGEST THUNDERSTORM WAS LOCATED JUST EAST OF RICHWOOD IN
SOUTHERN DODGE COUNTY...41 MILES WEST NORTHWEST OF MILWAUKEE...WAS
PRODUCING BRIEF HEAVY DOWNPOURS.  SMALL HAIL IS POSSIBLE WITH THIS
THUNDERSTORM.

THE AREA OF RAIN WILL MOVE EAST THROUGH WASHINGTON AND JEFFERSON
COUNTIES AND ENTER WAUKESHA AND OZAUKEE COUNTIES DURING THE NEXT HOUR
...POSSIBLY REACHING MILWAUKEE COUNTY BY 1 PM CDT.
GARCIA
Special weather statement, Jul 18, 12:51 PM CDT, 1 hour 29 minutes before
WIZ016-WIZ017-WIZ019-WIZ020-181845

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1250 PM CDT WED JUL 18 1990

...THUNDERSTORMS PRODUCING HEAVY RAIN IN DODGE COUNTY...

AT 1245 PM...WEATHER RADAR SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS
IN DODGE AND JEFFERSON COUNTIES EXTENDING TO SOUTH OF MADISON.  THE
STORMS ARE MOVING TO THE EAST/SOUTHEAST AT 35 MILES AN HOUR.
ANOTHER THUNDERSTORM IS OVER THE COASTAL WATERS OFF OZAUKEE COUNTY.

THE STRONGEST THUNDERSTORMS WERE LOCATED NEAR BEAVER DAM AND
LEBANON IN DODGE COUNTY WHICH IS ABOUT 35 MILES WEST/NORTHWEST
OF MILWAUKEE.  SOME OF THESE STORMS MAY PRODUCE STRONG WINDS AND HAIL.
THUNDERSTORMS PRODUCED WIND DAMAGE IN ToHE TOWN OF PORT WASHINGTON
SHORTLY AFTER NOON.

THUNDERSTORMS WILL CONTINUE TO MOVE THROUGH PORTIONS OF DODGE...
WASHINGTON...OZAUKEE...AND JEFFERSON COUNTIES POSSIBLY MOVING INTO
WAUKESHA AND WALWORTH COUNTIES BY 130 P.M.

KAVINSKY

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 1:08 PM CDTSevere Thunderstorm WarningMKXJefferson52 min
Jul 18, 1:23 PM CDTSevere Thunderstorm WarningMKXWaukesha67 min

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.