Natural Disaster Risk in Harrison County

Natural Hazard Profile: Harrison County, Mississippi

Harrison County, in the United States in Mississippi, is characterized by its humid subtropical climate — very hot, humid summers and mild winters. The county faces overlapping tornado and hurricane seasons, 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, Harrison County carries an overall risk score of 7.8/10, placing it in the high 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 hurricane and lightning.

Within Mississippi, Harrison County's risk is, considerably above the 6.1/10 state average. Nationally, it ranks well above the U.S. national average of 4.5/10. FEMA's analysis of Harrison County identifies coastal flood as the foremost hazard, followed by hurricane and lightning. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

Harrison County'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.