Natural Disaster Risk in Mercer

Natural Hazard Profile: Mercer, Wisconsin

Mercer, in Iron County, is a small community of about 1,549 situated in the northern tier of the continental United States. Its humid continental climate brings long, cold winters with lake-effect snow and warm summers, and in particular severe blizzards and spring tornado outbreaks. These conditions collectively define the natural hazard environment that Mercer residents and property owners must navigate.

According to FEMA's National Risk Index, Mercer carries an overall risk score of 3.9/10, placing it in the low category. Coastal flooding is the dominant hazard, with storm surge from tropical systems and nor'easters capable of inundating low-lying shoreline areas well above normal tidal levels. The area also faces notable exposure to cold wave and winter.

Within Wisconsin, Mercer's risk is, considerably below the 5.4/10 state average. Nationally, it ranks below the U.S. national average of 4.5/10. FEMA's analysis of Iron County identifies coastal flood as the foremost hazard, followed by cold wave and winter. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

Mercer carries a below-average natural disaster risk, reflecting fewer and less severe hazard exposures than typical U.S. communities. Even so, the area's primary risk — coastal flood — warrants awareness and appropriate insurance coverage, as lower risk does not mean zero risk.