Natural Disaster Risk in Irwin

Natural Hazard Profile: Irwin, Idaho

Irwin is a small community of about 576 in Bonneville County, in the Great Plains. The area experiences dry summers, cold winters, and significant wildfire risk, with a high fire danger period from July through September shaping the pattern of natural hazards that residents encounter. Understanding the local risk profile is essential for anyone living in, moving to, or owning property in Irwin.

FEMA rates Irwin's composite natural disaster risk at 6.9 out of 10 — high risk. Snow avalanche exposure tops the local risk profile, with the area's mountain setting and annual snowfall loading producing regular avalanche cycles on steep slopes. Residents should also account for volcano and earthquake risk in their preparedness planning.

Irwin's risk score, considerably above the 5.1/10 state average and well above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for Bonneville County, the highest-scoring are avalanche, volcano, and earthquake. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

Irwin'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.