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

#CountyTsunami ScoreRatingAnn. Freq.Ann. Loss
1 Honolulu County
92.3
High 0.66 / yr $48M
2 Maui County
90.8
High 0.66 / yr $31M
3 Hawaii County
86.2
Medium 0.66 / yr $15M
4 Kauai County
75.4
Medium 0.66 / yr $9M
5 Kalawao County
10.8
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.

Other Hazards in Hawaii