Tsunami Risk in Hawaii
All Hawaii counties ranked by FEMA National Risk Index tsunami score
Tsunami risk — series of ocean waves triggered by undersea earthquakes or landslides — is rated for 5 of 5 Hawaii counties in FEMA's National Risk Index. Honolulu County carries the state's highest tsunami score at 92.3, with $48M in expected annual tsunami losses.
2 Hawaii counties are rated High or Very High for tsunami, and expected annual losses from tsunami total roughly $103M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Tsunami
| # | County | Tsunami Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Honolulu County | High | 0.66 / yr | $48M | |
| 2 | Maui County | High | 0.66 / yr | $31M | |
| 3 | Hawaii County | Medium | 0.66 / yr | $15M | |
| 4 | Kauai County | Medium | 0.66 / yr | $9M | |
| 5 | Kalawao County | Very Low | 0.66 / yr | $56K |
5 Hawaii counties with measurable tsunami risk. See the national tsunami ranking or all Hawaii counties by overall risk.
Frequently Asked Questions
Which Hawaii county has the highest tsunami risk?
Honolulu County has the highest FEMA tsunami risk score in Hawaii at 92.3 (High), with $48M in expected annual losses and about 0.66 events per year.
How many Hawaii counties face significant tsunami risk?
5 Hawaii counties record measurable tsunami risk in FEMA's National Risk Index; 2 of them are rated High or Very High.