Winter Storm tops the risk list, and FEMA has declared Wisconsin a disaster area 55 times since 1953. Here's what to prepare for — and how.
Wisconsin's disaster profile is shaped by its northern latitude, Great Lakes proximity, and position along the upper Mississippi River valley. Winter storms pose the highest recurring risk, with heavy snow and ice regularly paralyzing transportation and cutting power across the state. Flooding and severe storms rank close behind, together accounting for 40 of the state's 46 major federal disaster declarations. The April 2018 floods in southwestern Wisconsin killed two people, displaced hundreds, and caused catastrophic damage to roads and farmland after historic rainfall overwhelmed streams. A decade earlier, the June 2008 floods inundated communities across much of the state, prompting one of Wisconsin's largest major disaster declarations and damaging thousands of homes and businesses. Tornadoes, while less frequent than in the central Plains, carry real danger: the April 1974 Super Outbreak touched down in Wisconsin as part of a multi-state outbreak that killed more than 300 people nationwide. As recently as 2025, the state received a major disaster declaration for severe storms, straight-line winds, flooding, and mudslides, confirming that these threats remain active. For residents, this history carries a clear message: preparedness cannot be seasonal. Whether stocking emergency supplies for a prolonged winter storm, identifying flood-prone ground near your home, or knowing your community's tornado warning system, Wisconsin demands year-round readiness across multiple hazard types.
Extended winter storms knock out power for days — prepare to survive without heat.
Tornadoes can form within minutes and level a home — identify your safe room now.
Flooding is the most common US disaster — just 6 inches of moving water can knock a person down.
This heavily forested region faces the state's most severe winter storms, with deep snowfall and prolonged ice events that frequently isolate rural communities and cause widespread power outages.
The rugged, unglaciated terrain of the Driftless Area funnels rainfall into steep coulees and streams, making this region especially vulnerable to flash flooding and landslides during heavy rain events.
Southern counties sit within the upper edge of Tornado Alley's reach and experience the most frequent tornado activity in the state, particularly during spring and early summer.
Lake Michigan drives intense lake-effect snow events in winter and contributes to strong storm systems, putting coastal and near-shore communities at elevated risk for damaging wind and ice.
The relatively flat central plain is exposed to both severe thunderstorm outbreaks and flooding along tributaries of the Wisconsin River, with limited natural barriers to slow storms moving across the region.
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The state's official emergency management agency — alerts, shelter info, and disaster assistance.
Wisconsin residents should register with their county's local emergency notification system and are automatically eligible for federal Wireless Emergency Alerts on cell phones; the Wisconsin Emergency Management website at wem.wi.gov provides direct links to county-level sign-up pages.
What natural disasters is Wisconsin most at risk for?
Wisconsin faces the highest risk from winter storms, which can bring paralyzing snow and ice statewide. Flooding and severe storms are also significant threats, together accounting for most of the state's federal disaster declarations. Tornadoes pose a medium-level risk, especially in southern and central counties during spring and summer.
How do I receive emergency alerts in Wisconsin?
Wisconsin residents can sign up for Wisconsin Emergency Alert System notifications through their county's local emergency management office, and should also enroll in the Wisconsin Emergency Notification System (WENS) if offered in their county. Wireless Emergency Alerts are automatically pushed to cell phones. A NOAA Weather Radio receiver provides a reliable backup during power outages.
What should a Wisconsin household emergency kit include?
A Wisconsin household kit should account for the state's winter hazard risk: stock at least 72 hours of water, non-perishable food, and medications, plus warm blankets, a battery or hand-crank radio, flashlights, and extra batteries. Include a manual can opener, first-aid supplies, copies of key documents, and a backup power source for any medical devices.
Who is responsible for emergency management in Wisconsin?
The Wisconsin Emergency Management (WEM) division, housed within the Wisconsin Department of Military Affairs, coordinates the state's preparedness, response, and recovery efforts. WEM works alongside county emergency management offices, which serve as the primary local point of contact for residents during disasters and for community preparedness planning.
Knowing your risks is step one. Two minutes with the readiness quiz tells you exactly where your preparation stands — and the free guide walks you through closing the gaps.