Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 39, NWS Milwaukee, WI

July 10, 1993Walworth County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 10, 1993, 7:25 PM CDT for Walworth County, Wisconsin. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Jul 10, 1993, 7:25 PM CDT (00:25 UTC)
Expired
Jul 10, 1993, 8:30 PM CDT
In force
65 min
Issued by
NWS Milwaukee, WI
Area
Whole counties

County Walworth County, WI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.4 hours before the alert went out and 204 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 1993-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 212 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 1993-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 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
212 J/kg
Mixed-layer CIN
-100 J/kg
Mixed-layer LCL
1432 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
47 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 
WUUS1 KMKE 110026 RRA
SVRMKE
WIC127-110130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
725 PM CDT SAT JUL 10 1993
 
THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  830 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST WISCONSIN
 
   ...WALWORTH COUNTY
 
AT 725 PM WEATHER RADAR INDICATED A SEVERE THUNDERSTORM JUST
NORTHEAST OF JANESVILLE WHICH WILL MOVE ACROSS WALWORTH COUNTY.
 
THIS STORM WILL LIKELY PRODUCE DAMAGING WINDS AND TORRENTIAL
RAINS AND WILL AFFECT THE TOWNS OF WITEWATER RICHMOND
AND TROY.
 
IN ADDTION BE ON THE LOOKOUT FOR FLOODING WITH THESE STORMS.
THE STORMS ARE MOVING EAST 40 MPH.
 
SEVERE THUNDERSTORMS OCCASIONALLY PRODUCE TORNADOES WITH LITTLE
OR NO ADVANCE WARNING.  IF YOU ARE OUTSIDE...MOVE TO A REINFORCED
SHELTER.  IF INDOORS...STAY 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, Jul 10, 4:59 PM CDT, 2 hours 26 minutes before
WIZ019-020-102300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
500 PM CDT SAT JUL 10 1993

...THUNDERSTORMS DEVELOPING RAPIDLY ALONG WISCONSIN-ILLINOIS BORDER...

AT 5 PM...THUNDERSTORMS WERE DEVELOPING RAPIDLY ALONG THE WISCONSIN
/ILLINOIS BORDER OVER EXTREME SOUTHERN WALWORTH COUNTY.  THE STORMS WERE
JUST SOUTH OF THE TOWN OF WALWORTH OR ABOUT 25 MILES SOUTHEAST OF
JANESVILLE.  THESE STORMS WERE MOVING TO THE NORTHEAST AND WILL BE
ENTERING WALWORTH COUNTY SHORTLY.

OTHER STRONGER STORMS WERE ALSO DEVELOPING FURTHER SOUTH OVER MCHENRY
AND LAKE COUNTIES OF FAR NORTHEAST ILLINOIS.  THESE STORMS MAY MOVE INTO
RACINE AND KENOSHA COUNTIES BY 6 PM.  NO SEVERE WEATHER HAS BEEN
REPORTED ACROSS SOUTHEAST WISCONSIN AS OF 5 PM.

STRONG WINDS...HEAVY RAINS AND HAIL ARE POSSIBLE WITH ANY THUNDERSTORMS
WHICH AFFECT YOUR AREA THIS EVENING.  BE PREPARED TO SEEK SHELTER SHOULD
ONE OF THESE STORMS APPROACH YOUR LOCbATION.  A SEVERE THUNDERSTORM WATCH
REMAINS IN EFFECT FOR MUCH OF SOUTHEAST WISCONSIN UNTIL 10 PM.

KAVINSKY
Special weather statement, Jul 10, 5:00 PM CDT, 2 hours 25 minutes before
WIZ019-020-102300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
500 PM CDT SAT JUL 10 1993

...THUNDERSTORMS DEVELOPING RAPIDLY ALONG WISCONSIN-ILLINOIS BORDER...

AT 5 PM...THUNDERSTORMS WERE DEVELOPING RAPIDLY ALONG THE WISCONSIN
/ILLINOIS BORDER OVER EXTREME SOUTHERN WALWORTH COUNTY.  THE STORMS WERE
JUST SOUTH OF THE TOWN OF WALWORTH OR ABOUT 25 MILES SOUTHEAST OF
JANESVILLE.  THESE STORMS WERE MOVING TO THE NORTHEAST AND WILL BE
ENTERING WALWORTH COUNTY SHORTLY.

OTHER STRONGER STORMS WERE ALSO DEVELOPING FURTHER SOUTH OVER MCHENRY
AND LAKE COUNTIES OF FAR NORTHEAST ILLINOIS.  THESE STORMS MAY MOVE INTO
RACINE AND KENOSHA COUNTIES BY 6 PM.  NO SEVERE WEATHER HAS BEEN
REPORTED ACROSS SOUTHEAST WISCONSIN AS OF 5 PM.

STRONG WINDS...HEAVY RAINS AND HAIL ARE POSSIBLE WITH ANY THUNDERSTORMS
WHICH AFFECT YOUR AREA THIS EVENING.  BE PREPARED TO SEEK SHELTER SHOULD
ONE OF THESE STORMS APPROACH YOUR LOCATION.  A SEVERE THUNDERSTORM WATCH
REMAINS IN EFFECT FOR MUCH OF SOUTHEAST WISCONSIN UNTIL 10 PM.

KAVINSKY
Special weather statement, Jul 10, 5:23 PM CDT, 2 hours 2 minutes before
WIZ019-020-502-102330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
523 PM CDT SAT JUL 10 1993

...STRONG THUNDERSTORMS OVER WALWORTH AND KENOSHA COUNTIES...

AT 525 PM...STRONG THUNDERSTORMS WERE LOCATED OVER SOUTHERN WALWORTH
COUNTY NEAR THE TOWN OF FONTANA OR 25 MILES SOUTHEAST OF JANESVILLE AND
IN FAR WESTERN KENOSHA COUNTY NEAR POWERS LAKE OR ABOUT 25 MILES WEST OF
KENOSHA.  THE STORMS WERE MOVING TO THE NORTHEAST AT 25 MPH.  NO SEVERE
WEATHER HAS BEEN REPORTED ACROSS SOUTHEAST WISCONSIN THIS AFTERNOON.

THESE STORMS WILL AFFECT THE TOWNS OF LAKE GENEVA...SILVER LAKE AND
LYONS IN THE NEXT HALF HOUR TO HOUR.  LARGE HAIL...DAMAGING WINDS AND
FREQUENT LIGHTNING CAN BE EXPECTED WITH THESE STORMS.

BOATERS ON LAKE MICHIGAN OFF THE RACINE AND KENOSHA COUNTY COASTLINES
SHOULD BE PREPARED TO SEEK SAFE HARBOR AS THESE STORMS MOVE OUT OVER
THE WATERS OF LAKE MICHIGAN THROUGH 7 PM.
KAVINSKY
Special weather statement, Jul 10, 5:25 PM CDT, 2 hours before
WIZ019-020-502-102330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
523 PM CDT SAT JUL 10 1993

...STRONG THUNDERSTORMS OVER WALWORTH AND KENOSHA COUNTIES...

AT 525 PM...STRONG THUNDERSTORMS WERE LOCATED OVER SOUTHERN WALWORTH
COUNTY NEAR THE TOWN OF FONTANA OR 25 MILES SOUTHEAST OF JANESVILLE AND
IN FAR WESTERN KENOSHA COUNTY NEAR POWERS LAKE OR ABOUT 25 MILES WEST OF
KENOSHA.  THE STORMS WERE MOVING TO THE NORTHEAST AT 25 MPH.  NO SEVERE
WEATHER HAS BEEN REPORTED ACROSS SOUTHEAST WISCONSIN THIS AFTERNOON.

THESE STORMS WILL AFFECT THE TOWNS OF LAKE GENEVA...SILVER LAKE AND
LYONS IN THE NEXT HALF HOUR TO HOUR.  LARGE HAIL...DAMAGING WINDS AND
FREQUENT LIGHTNING CAN BE EXPECTED WITH THESE STORMS.

BOATERS ON LAKE MICHIGAN OFF THE RACINE AND KENOSHA COUNTY COASTLINES
SHOULD BE PREPARED TO SEEK SAFE HARBOR AS THESE STORMS MOVE OUT OVER
THE WATERS OF LAKE MICHIGAN THROUGH 7 PM.
KAVINSKY
Special weather statement, Jul 10, 6:09 PM CDT, 1 hour 16 minutes before
WIZ019-020-110015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
609 PM CDT SAT JUL 10 1993

...INTENSE THUNDERSTORMS DEVELOPING RAPIDLY OVER JEFFERSON COUNTY...

AT 6 PM...INTENSE THUNDERSTORMS HAD DEVELOPED RAPIDLY IN NORTHEAST
JEFFERSON COUNTY...BETWEEN IXONIA AND SULLIVAN.  THE STORMS WERE HEADING
TO THE EAST-NORTHEAST AT 40 MPH INTO NORTHWEST WAUKESHA COUNTY.

LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE WITH THESE THUNDERSTORMS.
CITIES IN THE PATH OF THESE STORMS INCLUDE OCONOMOWOC AND HARTLAND.

ALSO...INTENSE THUNDERSTORMS WERE OVER WESTERN KENOSHA COUNTY MOVING TO
THE NORTHEAST INTO RACINE COUNTY.  PEA SIZE HAIL WAS REPORTED IN WILMOT
OR 20 MILES WEST OF KENOSHA AT 555 PM.  THESE STORMS WILL AFFECT RACINE
AND KENOSHA COUNTIES THROUGH 7 PM.

SEEK SHELTER QUICKLY SHOULD THESE STORMS APPROACH YOUR LOCATION.

KAVINSKY

&
Special weather statement, Jul 10, 6:10 PM CDT, 1 hour 15 minutes before
WIZ019-020-110015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
609 PM CDT SAT JUL 10 1993

...INTENSE THUNDERSTORMS DEVELOPING RAPIDLY OVER JEFFERSON COUNTY...

AT 6 PM...INTENSE THUNDERSTORMS HAD DEVELOPED RAPIDLY IN NORTHEAST
JEFFERSON COUNTY...BETWEEN IXONIA AND SULLIVAN.  THE STORMS WERE HEADING
TO THE EAST-NORTHEAST AT 40 MPH INTO NORTHWEST WAUKESHA COUNTY.

LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE WITH THESE THUNDERSTORMS.
CITIES IN THE PATH OF THESE STORMS INCLUDE OCONOMOWOC AND HARTLAND.

ALSO...INTENSE THUNDERSTORMS WERE OVER WESTERN KENOSHA COUNTY MOVING TO
THE NORTHEAST INTO RACINE COUNTY.  PEA SIZE HAIL WAS REPORTED IN WILMOT
OR 20 MILES WEST OF KENOSHA AT 555 PM.  THESE STORMS WILL AFFECT RACINE
AND KENOSHA COUNTIES THROUGH 7 PM.

SEEK SHELTER QUICKLY SHOULD THESE STORMS APPROACH YOUR LOCATION.

KAVINSKY

&

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 7:06 PM CDTTornado WarningMKXJefferson39 min
Jul 10, 7:38 PM CDTSevere Thunderstorm WarningMKXWaukesha52 min
Jul 10, 7:38 PM CDTSevere Thunderstorm WarningMKXKenosha, Racine67 min
Jul 10, 7:38 PM CDTSevere Thunderstorm WarningMKXMilwaukee67 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1993Every severe thunderstorm warning in 1993

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.