Natural Disaster Risk in Chesterfield

Natural Hazard Profile: Chesterfield, Missouri

Chesterfield, in St. Louis County, is a city of approximately 43,243 residents situated in the interior eastern United States. Its humid continental climate brings hot summers, cold winters, and collision of multiple air masses, and in particular year-round severe weather including tornadoes, ice storms, and floods. These conditions collectively define the natural hazard environment that Chesterfield residents and property owners must navigate.

Chesterfield's overall natural disaster risk is rated 7.9/10 (High) by FEMA's National Risk Index. Hailstorm risk tops the local hazard profile, driven by frequent severe thunderstorm development that produces some of the most property-damaging hail in the country. Secondary hazards include heat and cold wave.

Within Missouri, Chesterfield's risk is, considerably above the 5.9/10 state average. Nationally, it ranks well above the U.S. national average of 4.5/10. FEMA's analysis of St. Louis County identifies hail as the foremost hazard, followed by heat and cold wave. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

With a high natural disaster risk rating, Chesterfield 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.