A slow moving low pressure area brought a 18-24 hour period of moderate to sometimes heavy rainfall. 3 to 6 inches of rain fell over far eastern WI, which resulted in river, creek, and lowland flooding. Numerous roads were flooded and closed. A small number of water rescues were executed. One indirect death occurred when a retaining wall collapsed onto an elderly woman.

Lakeshore Flood in OZAUKEE, WISCONSIN
From 17-MAY-20 13:00:00 to 18-MAY-20 13:00:00 (CST-6)
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall and persistent northeast winds causing high waves resulted in significant lakeshore bluff erosion in parts of Ozaukee County, along Lake Michigan.  In the Town of Grafton, an estimated 4 feet of bluff eroded causing the foundation of one home on Lake Shore Road and Pioneer Road to be exposed.  A significant mud slide occurred at Lion's Den Gorge State Park that did necessitate the rescue of two hikers that were trying to retrieve a dog.  The hikers had only minor injuries.  There was also a hill slide at the Port Washington High School/Community Pool.  This resulted in a compromised roadway.  Small sections of the bluff have failed up and down the Ozaukee county shoreline, including Upper Lake Park in Port Washington.

Flood in MILWAUKEE, WISCONSIN
From 17-MAY-20 16:30:00 to 18-MAY-20 04:15:00 (CST-6)
Location: FOX PT
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: 911 Call Center

West Allis PD rescued a stranded driver via a boat on the Root River Parkway, whose car stalled in relatively deep water from the flooding of the nearby Root River. Another car stalled in relatively deep water at 112th and Cleveland Ave. from the flooding of the Root River. The Root River and other creeks and rivers throughout Milwaukee remained high or flooded through the night. Some of the adjacent roads, yards, and basements also flooded.

Flood in RACINE, WISCONSIN
From 17-MAY-20 12:00:00 to 20-MAY-20 06:00:00 (CST-6)
Location: KNEELAND
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Root River at Raymond and across northeast Racine County flooded after several inches of rainfall in the basin. The Root River at Raymond crested at 10.97 feet on May 18th. Floodwaters are in the backyards of some homes in the Town of Raymond. There is widespread flooding of lowland and agricultural land throughout the basin.  Floodwaters cover a baseball diamond on 6 Mile Road. On May 18th, Nicholson Road, which crosses the Root River near the Racine and Milwaukee County line, was closed due to flooding. Husher Creek, which flows into the Root River, also flooded and was covering Highway 38 south of Seven Mile Road.

Flood in OZAUKEE, WISCONSIN
From 18-MAY-20 04:15:00 to 20-MAY-20 19:45:00 (CST-6)
Location: THIENSVILLE
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

The Milwaukee River near Cedarburg reached minor flood stage, cresting at 11.8 feet during the early afternoon on May 19th. Water approaches some homes along Klug Lane just south of Highway C in Thiensville. Water is near some homes along Island Drive and Shoreland Parkway in the Mequon area.

Lakeshore Flood in SHEBOYGAN, WISCONSIN
From 17-MAY-20 13:00:00 to 18-MAY-20 13:00:00 (CST-6)
Crop damage: 0.00K
Reported by: Emergency Manager

Lakeshore flooding reported along Broughton Drove along Deland Park on the lakeshore.

Flood in WAUKESHA, WISCONSIN
From 17-MAY-20 16:30:00 to 18-MAY-20 04:15:00 (CST-6)
Location: NEW BERLIN
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: 911 Call Center

In New Berlin there were numerous flooded streets, basements, and elevator shafts.
A portion of 130th St. was closed due to road buckling.

Flood in RACINE, WISCONSIN
From 18-MAY-20 17:00:00 to 20-MAY-20 06:00:00 (CST-6)
Location: DOWNTOWN RACINE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Root River at Racine reached moderate flood stage, cresting at 7.9 feet during the early afternoon of May 19th. Lincoln Park and Horlick Park in Racine are flooded and closed. Floodwaters are in the backyards of some homes and there is some basement flooding.

Flood in MILWAUKEE, WISCONSIN
From 18-MAY-20 04:15:00 to 19-MAY-20 02:00:00 (CST-6)
Location: FRANKLIN ARPT
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Root River at Franklin reach minor flood stage, cresting at 9.52 feet the morning of May 18th. On May 18th, the Root River Parkway at Layton Avenue in Greenfield had to close due to flooding. A driver drove his vehicle into floodwaters which caused his vehicle to stall. The driver did exit the scene safely.  The Root River also flooded and closed both the north and southbound lanes of Wisconsin 241 over far southeast Franklin the morning of May 18th. The road remained closed into the afternoon.  A portion of Oakwood Road is flooded and closed. There is widespread flooding to agricultural land along the basin.

Flood in SHEBOYGAN, WISCONSIN
From 17-MAY-20 14:15:00 to 18-MAY-20 04:15:00 (CST-6)
Location: HAVEN
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water over roads in low-lying areas all over the county with some closures. Many people in the City of Sheboygan had water in their basements due to the storm sewer backing up.

Flood in SHEBOYGAN, WISCONSIN
From 18-MAY-20 04:15:00 to 20-MAY-20 09:30:00 (CST-6)
Location: SHEBOYGAN
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Sheboygan River reached moderate flood stage, cresting at 11.07 feet the morning of May 18th. About 3 miles west of Sheboygan Airport, Woodland Road is flooded and closed between Rio Road and Willow Road due to the flooding of the Sheboygan River. Sections of Alpine Road and Meadowlark Road in the Sheboygan Falls area are flooded and closed. Floodwaters affect Kiwanis and Esslingen Parks in Sheboygan. Other roads and low lying areas are flooded in closed due to areal flooding from the several inches of rain that had fallen.

Flood in KENOSHA, WISCONSIN
From 17-MAY-20 20:10:00 to 26-MAY-20 23:45:00 (CST-6)
Location: SILVER LAKE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Fox River at New Munster reached minor flood stage, cresting at 12.97 feet the early morning of May 19th. Water is up to the first floor levels of some homes in the Town of Wheatland, and the Village of Salem Lakes along Riverside Drive and Shorewood Drive. Floodwaters surround a home at the intersection of Highway 50 and Highway W in the Town of Wheatland area. Water is about 12 inches deep over 77th Street in the Town of Wheatland area.

Flood in OZAUKEE, WISCONSIN
From 17-MAY-20 13:30:00 to 18-MAY-20 04:15:00 (CST-6)
Location: LAKE CHURCH
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Numerous flooding reports all over the county with some road closures. Numerous basements flooded in Port Washington. A retaining wall collapsed onto an elderly woman in Port Washington, killing her. Two drivers rescued driving into deep water underneath a railroad bridge on Spring St. and Sunset Rd. in Port Washington.