Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 28, NWS Milwaukee, WI

July 18, 1990Waukesha County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 18, 1990, 1:23 PM CDT for Waukesha County, Wisconsin. It was in force for 67 min.

The area

The counties it named.

The facts

Issued: Jul 18, 1990, 1:23 PM CDT (18:23 UTC)
Expired: Jul 18, 1990, 2:30 PM CDT
In force: 67 min
Issued by: NWS Milwaukee, WI
Area: Whole counties

County Waukesha 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 163 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 181826
SVRMKE
WIC133-181930-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
123 PM CDT WED JUL 18 1990
 
THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  230 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHEAST WISCONSIN
          ...WAUKESHA
 
AT 125 PM CDT SEVERE THUNDERSTORMS WERE LOCATED IN EASTERN JEFFERSON
COUNTY MOVING EAST AT 35 MPH INTO WAUKESHA COUNTY SHORTLY. RADAR
INDICATED HIGH WINDS AND HAIL LIKELY WITH THIS STORM. THE STRONGEST
STORMS WERE NEAR SULLIVAN...ABOUT 35 MILES WEST OF MILWAUKEE.
 
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, 2 hours 52 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, 1 hour 29 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, 32 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.

Issued	Product	Office	Counties	Lasted
Jul 18, 1:08 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson	52 min
Jul 18, 2:20 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine	40 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1990 Every 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.