Natural Disaster Risk in Harriman

Natural Hazard Profile: Harriman, Tennessee

Harriman is a city of approximately 17,575 residents in Roane County, in the interior eastern United States. The area experiences hot summers, mild winters, and transitional weather patterns, with tornado risk in both spring and fall 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 Harriman.

According to FEMA's National Risk Index, Harriman carries an overall risk score of 6.3/10, placing it in the high category. Slope instability and debris flows are the primary natural hazard, driven by a combination of local geology, precipitation intensity, and terrain that creates susceptibility to failure. The area also faces notable exposure to cold wave and earthquake.

Harriman's risk score, slightly above the 5.8/10 state average and above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for Roane County, the highest-scoring are landslide, cold wave, and earthquake. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

Harriman'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.