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Ozaukee storm history

Storm events recorded in Ozaukee, Wisconsin between 1950 and 2025.

658
Total events
4
Tornadoes
71
Hail
43
Floods
5
Deaths
$31.5M
Property damage

Most significant events

Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.

August 22, 1964 · Ozaukee, Wisconsin
Tornado F4 Tornado30 injuries, $2.5M damage
May 17, 2020 · Ozaukee, Wisconsin
Flood Flood1 death
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 Spri…
November 6, 2019 · Ozaukee, Wisconsin
Winter Weather Winter Weather1 death
Snow accumulation of 4 to 5 inches. One indirect death from a vehicle accident on I-43 near Saukville around 8 AM.
August 20, 2018 · Ozaukee, Wisconsin
Rip Current Rip Current1 death
Ozaukee County Emergency Manager first alerted WFO MKX about a missing swimmer at Harrington Beach State Park along the Lake Michigan shore. A group of 5 people went swimming in dangerous swimming conditions when strong onshore winds were creating high waves and an increased risk…
August 20, 2018 · Ozaukee, Wisconsin
Rip Current Rip Current1 death
Ozaukee County Emergency Manager first alerted WFO MKX about a missing swimmer at Harrington Beach State Park along the Lake Michigan shore. A group of 5 people went swimming in dangerous swimming conditions when strong onshore winds were creating high waves and an increased risk…
October 11, 2002 · Ozaukee, Wisconsin
Dense Fog Dense Fog1 death
April 13, 2006 · Ozaukee, Wisconsin
Hail Hail$6.3M damage
June 1, 2004 · Ozaukee, Wisconsin
Flood Flood$2.6M damage
May 31, 1998 · Ozaukee, Wisconsin
Thunderstorm Wind Thunderstorm Wind4 injuries, $3.5M damage
June 18, 1996 · Ozaukee, Wisconsin
Flash Flood Flash Flood$5.3M damage
June 18, 1996 · Ozaukee, Wisconsin
Flood Flood$3.9M damage
December 28, 2025 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Snow accumulation of 1-3 inches. Westerly wind gusts 35-40 mph.
December 14, 2025 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Wind chill temperatures 20 below to 26 below zero.
December 9, 2025 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Snow accumulation of 2-4 inches with lesser amounts near the lake. Some blowing and drifting snow.
November 29, 2025 · Ozaukee, Wisconsin
Winter Storm Winter Storm
Snow accumulation 5-12 inches with the lowest amounts near the lake.
November 26, 2025 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Snow accumulation less than 2 inches and wind gusts of 40-50 mph. A portion of I-43 was closed for some time due to accidents on a slick highway.
August 11, 2025 · Ozaukee, Wisconsin
Flood Flood
The Milwaukee River and Cedar Creek continued to flood from the heavy rainfall of prior days in Ozaukee County. For the flooded Milwaukee River, floodwaters affected Island Dr. and Shoreland Parkway in the Mequon area. Water is over Elm St, Green Bay Rd., and North Cedarburg Rd. …
August 10, 2025 · Ozaukee, Wisconsin
Flash Flood Flash Flood
The flash flooding of streets, creeks, rivers, and low lying neighborhoods in Mequon, Thiensville, Cedarburg and southern Grafton. More specifically, the flash flooding of Pigeon Creek washed out a portion of Highland Rd. The flash flooding of Olau Creek flooded Pioneer Rd. just …
August 10, 2025 · Ozaukee, Wisconsin
Flood Flood
The continued areal flooding of streets, creeks, rivers, and low lying neighborhoods in Mequon, Thiensville, Cedarburg and southern Grafton. More specifically, the flooding of Pigeon Creek washed out a portion of Highland Rd. The flooding of Olau Creek flooded Pioneer Rd. just we…
August 10, 2025 · Ozaukee, Wisconsin
Flash Flood Flash Flood
The flash flooding of some streets, creeks, rivers, and low lying neighborhoods in northern Cedarburg, Grafton, Saukville and Port Washington. Some basement flooding due to excessive runoff or sewer backups.
August 10, 2025 · Ozaukee, Wisconsin
Flood Flood
The continued areal flooding of streets, creeks, rivers, and low lying neighborhoods in northern Cedarburg, Grafton, Port Washington and other areas of central and northern Ozaukee County. Sections of I-43 were closed due to flooding. This included I-43 northbound from Pioneer Rd…
June 21, 2025 · Ozaukee, Wisconsin
Heat Heat
Maximum heat index values of 100-104 degrees Fahrenheit. Minimum heat index values in the middle to upper 70s away from Lake Michigan.
March 19, 2025 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Storm-total accumulations generally in the 1 to 3 inch range countywide. Highest total of 3.2 inches observed in Newburg. Peak wind gusts were around 40 mph during the evening while the snow was falling.
February 17, 2025 · Ozaukee, Wisconsin
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
Widespread wind chills between -25 and -30 observed countywide, with locally colder values. Minimum wind chill of -31 observed near Fredonia.
February 14, 2025 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Storm-total accumulations generally in the 3-6 inch range countywide. Highest total of 5.9 inches observed in Saukville.
February 12, 2025 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Storm-total accumulations generally in the 3-6 inch range countywide. Highest total of 6.0 inches observed in Mequon.
February 5, 2025 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Ice accumulations from freezing drizzle ranging between 0.02 inches and 0.10 inches, resulting in slippery spots on untreated surfaces.
January 20, 2025 · Ozaukee, Wisconsin
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
Widespread wind chills near and just below -30 degrees were observed from 2 AM January 21 through the mid morning hours of January 21. Coldest wind chill of -32 was observed in Fredonia.
January 6, 2025 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Light glaze of ice on untreated roads and surfaces from freezing drizzle.
December 23, 2024 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Accumulations of 1-2 inches across most of the county, with locally higher totals. Highest accumulation of 2.3 inches observed in Saukville.
December 19, 2024 · Ozaukee, Wisconsin
Winter Storm Winter Storm
Long duration snowfall brings widespread 7-11 inch accumulations countywide. Highest total of 11.0 inches observed in Fredonia.
November 21, 2024 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Snow accumulation of 3-5 inches. West northwest wind gusts of 25-35 mph with visibility as low as 1/4-1/2 mile.
August 27, 2024 · Ozaukee, Wisconsin
Thunderstorm Wind Thunderstorm Wind
Scattered trees and power lines down through central and southern portions of the county.
June 17, 2024 · Ozaukee, Wisconsin
Thunderstorm Wind Thunderstorm Wind
Tree and power line damage at highway NN and Granville Road.
June 17, 2024 · Ozaukee, Wisconsin
Thunderstorm Wind Thunderstorm Wind
Trees down in the vicinity of County Roads B and A.
May 7, 2024 · Ozaukee, Wisconsin
Hail Hail
May 7, 2024 · Ozaukee, Wisconsin
Hail Hail
May 7, 2024 · Ozaukee, Wisconsin
Hail Hail
March 22, 2024 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Snow accumulation of 3-5 inches.
February 15, 2024 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Snow accumulation of 2-4 inches.
January 23, 2024 · Ozaukee, Wisconsin
Winter Weather Winter Weather
A glaze of ice on untreated roads from freezing rain. Some minor snow accumulation afterward.
January 22, 2024 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Glaze of ice on untreated roads from a brief period of freezing rain, sleet, and snow.
January 14, 2024 · Ozaukee, Wisconsin
Cold/Wind Chill Cold/Wind Chill
Dangerous wind chill temperatures of 20 below to 30 below zero.
January 12, 2024 · Ozaukee, Wisconsin
Winter Storm Winter Storm
Wet, heavy snow accumulation of 10-14 inches. East northeast wind gusts of 30-40 mph. Some tree limbs and pine trees down along with some power outages.
January 8, 2024 · Ozaukee, Wisconsin
Winter Storm Winter Storm
Wet snow accumulation of 3-7 inches. Gusty winds of 25-35 mph with scattered small tree limbs down. Lesser amounts of snow near the lake.
October 31, 2023 · Ozaukee, Wisconsin
Winter Weather Winter Weather
Snow accumulation of 1-3 inches.
August 23, 2023 · Ozaukee, Wisconsin
Excessive Heat Excessive Heat
Maximum heat index values from 110-115 degrees Fahrenheit.
July 5, 2023 · Ozaukee, Wisconsin
Thunderstorm Wind Thunderstorm Wind
Damage to small sheds, a porch which was under construction, and trees all near Willow Valley Road.
April 19, 2023 · Ozaukee, Wisconsin
Hail Hail
April 19, 2023 · Ozaukee, Wisconsin
Hail Hail

Events by year

YearEventsTornadoes
2025180
2024160
2023120
2022200
2021140
2020240
2019280
2018270
2017160
2016190
2015141
2014160
2013190
2012320
2011210
2010170
2009160
2008380
2007440
2006330
2005230
2004300
2003120
2002160
2001230
2000160
1999150
1998100
199770
1996232
199510
199220
199140
198940
198810
198730
198610
198410
198320
198220
198110
198030
197910
197810
197710
197620
197520
197410
197010
196710
196411
196120
196010