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.
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…
Snow accumulation of 4 to 5 inches. One indirect death from a vehicle accident on I-43 near Saukville around 8 AM.
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…
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…
Winter Weather Winter Weather
Snow accumulation of 1-3 inches. Westerly wind gusts 35-40 mph.
Winter Weather Winter Weather
Wind chill temperatures 20 below to 26 below zero.
Winter Weather Winter Weather
Snow accumulation of 2-4 inches with lesser amounts near the lake. Some blowing and drifting snow.
Winter Storm Winter Storm
Snow accumulation 5-12 inches with the lowest amounts near the lake.
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.
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. …
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 …
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…
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.
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…
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.
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.
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.
Winter Weather Winter Weather
Storm-total accumulations generally in the 3-6 inch range countywide. Highest total of 5.9 inches observed in Saukville.
Winter Weather Winter Weather
Storm-total accumulations generally in the 3-6 inch range countywide. Highest total of 6.0 inches observed in Mequon.
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.
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.
Winter Weather Winter Weather
Light glaze of ice on untreated roads and surfaces from freezing drizzle.
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.
Winter Storm Winter Storm
Long duration snowfall brings widespread 7-11 inch accumulations countywide. Highest total of 11.0 inches observed in Fredonia.
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.
Thunderstorm Wind Thunderstorm Wind
Scattered trees and power lines down through central and southern portions of the county.
Thunderstorm Wind Thunderstorm Wind
Tree and power line damage at highway NN and Granville Road.
Thunderstorm Wind Thunderstorm Wind
Trees down in the vicinity of County Roads B and A.
Hail Hail
Hail Hail
Hail Hail
Winter Weather Winter Weather
Snow accumulation of 3-5 inches.
Winter Weather Winter Weather
Snow accumulation of 2-4 inches.
Winter Weather Winter Weather
A glaze of ice on untreated roads from freezing rain. Some minor snow accumulation afterward.
Winter Weather Winter Weather
Glaze of ice on untreated roads from a brief period of freezing rain, sleet, and snow.
Cold/Wind Chill Cold/Wind Chill
Dangerous wind chill temperatures of 20 below to 30 below zero.
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.
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.
Winter Weather Winter Weather
Snow accumulation of 1-3 inches.
Excessive Heat Excessive Heat
Maximum heat index values from 110-115 degrees Fahrenheit.
Thunderstorm Wind Thunderstorm Wind
Damage to small sheds, a porch which was under construction, and trees all near Willow Valley Road.
Hail Hail
Hail Hail
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 18 | 0 |
| 2024 | 16 | 0 |
| 2023 | 12 | 0 |
| 2022 | 20 | 0 |
| 2021 | 14 | 0 |
| 2020 | 24 | 0 |
| 2019 | 28 | 0 |
| 2018 | 27 | 0 |
| 2017 | 16 | 0 |
| 2016 | 19 | 0 |
| 2015 | 14 | 1 |
| 2014 | 16 | 0 |
| 2013 | 19 | 0 |
| 2012 | 32 | 0 |
| 2011 | 21 | 0 |
| 2010 | 17 | 0 |
| 2009 | 16 | 0 |
| 2008 | 38 | 0 |
| 2007 | 44 | 0 |
| 2006 | 33 | 0 |
| 2005 | 23 | 0 |
| 2004 | 30 | 0 |
| 2003 | 12 | 0 |
| 2002 | 16 | 0 |
| 2001 | 23 | 0 |
| 2000 | 16 | 0 |
| 1999 | 15 | 0 |
| 1998 | 10 | 0 |
| 1997 | 7 | 0 |
| 1996 | 23 | 2 |
| 1995 | 1 | 0 |
| 1992 | 2 | 0 |
| 1991 | 4 | 0 |
| 1989 | 4 | 0 |
| 1988 | 1 | 0 |
| 1987 | 3 | 0 |
| 1986 | 1 | 0 |
| 1984 | 1 | 0 |
| 1983 | 2 | 0 |
| 1982 | 2 | 0 |
| 1981 | 1 | 0 |
| 1980 | 3 | 0 |
| 1979 | 1 | 0 |
| 1978 | 1 | 0 |
| 1977 | 1 | 0 |
| 1976 | 2 | 0 |
| 1975 | 2 | 0 |
| 1974 | 1 | 0 |
| 1970 | 1 | 0 |
| 1967 | 1 | 0 |
| 1964 | 1 | 1 |
| 1961 | 2 | 0 |
| 1960 | 1 | 0 |