Natural Disaster Risk in Lewis

Natural Hazard Profile: Lewis, Iowa

Lewis, in Cass County, is a small community of about 793 situated in the interior eastern United States. Its humid continental climate brings cold winters, hot summers, and frequent severe weather, and in particular a tornado-active spring season. These conditions collectively define the natural hazard environment that Lewis residents and property owners must navigate.

According to FEMA's National Risk Index, Lewis carries an overall risk score of 6.0/10, placing it in the high category. Drought is the leading natural hazard, with multi-year dry periods capable of depleting water supplies, devastating agriculture, and increasing wildfire risk across the region. The area also faces notable exposure to cold wave and hail.

Within Iowa, Lewis's risk is, slightly above the 5.4/10 state average. Nationally, it ranks above the U.S. national average of 4.5/10. FEMA's analysis of Cass County identifies drought as the foremost hazard, followed by cold wave and hail. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

Lewis's high risk designation reflects meaningful exposure to natural hazards. Residents should verify that their insurance covers the area's primary risks, prepare a family emergency plan, and stay informed about seasonal hazard peaks through local weather and emergency management services.