Natural Disaster Risk in Rock County

Natural Hazard Profile: Rock County, Minnesota

Rock County, in the United States in Minnesota, is characterized by its continental climate — some of the harshest winters in the lower 48 and warm summers. The county faces severe blizzards and spring tornado outbreaks, and its FEMA risk assessment establishes the hazard baseline shared by all the towns and cities it contains.

According to FEMA's National Risk Index, Rock County carries an overall risk score of 4.3/10, placing it in the moderate category. Large hail is the dominant natural hazard, with supercell thunderstorms regularly producing damaging hailstones capable of destroying crops, vehicles, and roofs. The area also faces notable exposure to winter and drought.

Within Minnesota, Rock County's risk is, slightly below the 5.2/10 state average. Nationally, it ranks near the U.S. national average of 4.5/10. FEMA's analysis of Rock County identifies hail as the foremost hazard, followed by winter and drought. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

With a moderate risk rating, Rock County residents are well-served by maintaining standard preparedness practices — an emergency supply kit, awareness of local hazard seasonality, and insurance that covers the top local risks. Periodic review of coverage for hail is recommended.