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3
Moderate

tsunami Tsunami Risk in Seattle, WA

Risk Level: Moderate — Score 3/10

FEMA: 3Historical: 10

Key Risk Factors

  • Estimated annual loss of $6M from this hazard type
  • Frequent historical activity recorded in proximity
  • Active in the last 12 months (13 events)
  • Largest recent event exposed 2,074,681 people

Last significant event: Tsunami (Pacific Ocean - Local) - Mindanao Philippines - 7.4 (2025-10-10) — 1,148,600 people exposed

Highest Risk Cities for Tsunamis

1
Tokyo, Japan
Risk: 9Historical: 10
2
Shanghai, China
Risk: 9Historical: 10
3
Sydney, Australia
Risk: 9Historical: 10
4
Kuala Lumpur, Malaysia
Risk: 9Historical: 10
5
Kathmandu, Nepal
Risk: 9Historical: 0
6
Honolulu, HI
FEMA: 7Historical: 10
7
San Francisco, CA
FEMA: 5Historical: 10
8
Manila, Philippines
Risk: 5Historical: 10
9
Mumbai, India
Risk: 5Historical: 10
10
Seoul, South Korea
Risk: 5Historical: 10
Seattle is not in the top 10 for tsunami risk among tracked cities.

How Seattle Compares

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Notable Tsunami Events Near Seattle

Tsunami (Pacific Ocean - Local) - Tonga - 7.1

March 29, 2025 — ADVISORY

2,074,681 people exposed; $318,833M capital exposed

Tsunami (Pacific Ocean - Local) - Mindanao Philippines - 7.4

October 9, 2025 — ADVISORY

1,148,600 people exposed; $47,953M capital exposed

Tsunami (Pacific Ocean - Local) - Taiwan - 7.5

April 1, 2024 — ADVISORY

1,043,380 people exposed; $47,777M capital exposed

Tsunami (Pacific Ocean - Local) - Vanuatu - 7.3

December 16, 2024 — ADVISORY

500,322 people exposed; $6,762M capital exposed

Tsunami (Pacific Ocean - Local) - Kyushu Japan - 7.1

August 7, 2024 — ADVISORY

419,163 people exposed; $33,527M capital exposed

Tsunami Preparedness Tips

  • 1.Know your evacuation route to higher ground — practice it regularly
  • 2.If you feel a strong earthquake near the coast, move inland immediately
  • 3.Heed official tsunami warnings and never go to the beach to watch
  • 4.Know the natural warning signs — rapid sea level drop, unusual ocean behavior
  • 5.Have a go-bag ready with essentials for quick evacuation

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