Severe Thunderstorm Warning 252, NWS Milwaukee, WI

Issued

Aug 18, 2026, 5:27 PM CDT (22:27 UTC)

Expired

Aug 18, 2026, 6:30 PM CDT

In force

63 min

Issued by

NWS Milwaukee, WI

Area

Storm-based polygon

Tornado

Possible

Hail

1.0 in

Wind

60.0 mph

Counties Dodge County, WI, Fond du Lac County, WI, Sheboygan County, WI, Washington County, WI

The Green Bay radar (KGRB), 87 km from the middle of the area, began a volume at 22:30 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

788 
WUUS53 KMKX 182227
SVRMKX
WIC027-039-117-131-182330-
/O.NEW.KMKX.SV.W.0252.260818T2227Z-260818T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
527 PM CDT Tue Aug 18 2026

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for...
  Eastern Fond du Lac County in east central Wisconsin...
  Northwestern Washington County in southeastern Wisconsin...
  Northeastern Dodge County in southeastern Wisconsin...
  Western Sheboygan County in east central Wisconsin...

* Until 630 PM CDT.

* At 527 PM CDT, severe thunderstorms were located along a line
  extending from near Southern Lake Winnebago to Oakfield to near
  Beaver Dam, moving east at 35 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Fond Du Lac, West Bend, Hartford, Plymouth, Mayville, Slinger,
  North Fond Du Lac, Kewaskum, Horicon, Juneau, Lomira,
  Campbellsport, Theresa, Oakfield, Elkhart Lake, Iron Ridge,
  Southern Lake Winnebago, Burnett, Taycheedah, and Addison.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4389 8816 4389 8797 4359 8802 4331 8831
      4343 8881 4359 8860 4381 8853 4394 8818
      4394 8816
TIME...MOT...LOC 2227Z 286DEG 30KT 4391 8847 4367 8855 4351 8876 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

DDV

648 
WWUS53 KMKX 182313
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
613 PM CDT Tue Aug 18 2026

WIC039-182323-
/O.CAN.KMKX.SV.W.0252.000000T0000Z-260818T2330Z/
Fond du Lac WI-
613 PM CDT Tue Aug 18 2026

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN FOND DU LAC COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
southeastern and east central Wisconsin.

&&

LAT...LON 4359 8802 4331 8831 4343 8881 4350 8834
      4355 8824 4354 8816 4380 8816 4379 8812
      4383 8798
TIME...MOT...LOC 2313Z 277DEG 24KT 4381 8799 4357 8807 4341 8828 

$$

WIC027-117-131-182330-
/O.CON.KMKX.SV.W.0252.000000T0000Z-260818T2330Z/
Washington WI-Dodge WI-Sheboygan WI-
613 PM CDT Tue Aug 18 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR NORTHWESTERN WASHINGTON...EAST CENTRAL DODGE AND WESTERN
SHEBOYGAN COUNTIES...

At 613 PM CDT, severe thunderstorms were located along a line
extending from near Elkhart Lake to near Random Lake to near West
Bend, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
West Bend, Hartford, Plymouth, Mayville, Slinger, Kewaskum, Horicon,
Juneau, Elkhart Lake, Iron Ridge, Addison, Greenbush, Woodland,
Cascade, Glenbeulah, Nenno, Beechwood, Boltonville, Allenton, and
Batavia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4359 8802 4331 8831 4343 8881 4350 8834
      4355 8824 4354 8816 4380 8816 4379 8812
      4383 8798
TIME...MOT...LOC 2313Z 277DEG 24KT 4381 8799 4357 8807 4341 8828 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

DDV

Severe Thunderstorm Warnings in Wisconsin, 2026Every severe thunderstorm warning in 2026

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; radar from the NEXRAD Level II archive.