Natural Disaster Risk in Stephenson County

Natural Hazard Profile: Stephenson County, Illinois

Stephenson County, in the United States in Illinois, is characterized by its humid continental climate — bitterly cold winters and hot, humid summers. The county faces a severe thunderstorm and tornado season each spring, 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, Stephenson County carries an overall risk score of 6.3/10, placing it in the high 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 wind and tornado.

Within Illinois, Stephenson County's risk is, slightly above the 5.8/10 state average. Nationally, it ranks above the U.S. national average of 4.5/10. FEMA's analysis of Stephenson County identifies hail as the foremost hazard, followed by wind and tornado. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

With a high natural disaster risk rating, Stephenson County residents benefit from taking preparedness seriously. Reviewing insurance coverage for hail and secondary hazards, registering for emergency alerts, and maintaining a household emergency kit are practical steps that can significantly reduce impact during a major event.