Natural Disaster Risk in Terreton

Natural Hazard Profile: Terreton, Idaho

Terreton, in Jefferson County, is a small community of about 1,207 situated in the Great Plains. Its semi-arid climate brings dry summers, cold winters, and significant wildfire risk, and in particular a high fire danger period from July through September. These conditions collectively define the natural hazard environment that Terreton residents and property owners must navigate.

According to FEMA's National Risk Index, Terreton carries an overall risk score of 5.5/10, placing it in the moderate 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 winter and cold wave.

Within Idaho, Terreton'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 Jefferson County identifies volcano as the foremost hazard, followed by winter and cold wave. These rankings reflect the relative frequency and severity of each hazard type in the local environment.

With a moderate risk rating, Terreton residents are well-served by maintaining standard preparedness practices — an emergency supply kit, awareness of local hazard seasonality, and insurance that covers the top local risks. Periodic review of coverage for volcano is recommended.