Natural Disaster Risk in Madison County

Natural Hazard Profile: Madison County, Idaho

Madison County, in the United States in Idaho, is characterized by its semi-arid climate — dry summers, cold winters, and significant wildfire risk. The county faces a high fire danger period from July through September, 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, Madison County carries an overall risk score of 6.1/10, placing it in the high category. Volcanic activity is the foremost natural hazard, with the area situated near active volcanic systems capable of producing lava flows, ashfall, and pyroclastic hazards. The area also faces notable exposure to avalanche and lightning.

Within Idaho, Madison County's risk is, slightly above the 5.1/10 state average. Nationally, it ranks above the U.S. national average of 4.5/10. FEMA's analysis of Madison County identifies volcano as the foremost hazard, followed by avalanche and lightning. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

With a high natural disaster risk rating, Madison County residents benefit from taking preparedness seriously. Reviewing insurance coverage for volcano 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.