DisasterAWARE
9
Extreme

tsunami Tsunami Risk in Tokyo, Japan

Risk Level: Extreme — Score 9/10

Risk: 9Historical: 10

Live Tsunami alert status near Tokyo

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Live tsunami map around Tokyo

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Key Risk Factors

  • High risk rating for Tokyo based on ThinkHazard (Tsunami)
  • Frequent historical activity recorded in proximity
  • Active in the last 12 months (17 events)
  • Largest recent event exposed 419,163 people
  • Coastal location within tsunami inundation zone

Last significant event: Tsunami (Pacific Ocean - Local) - Off The East Coast Of Honshu Japan - 7.4 (2026-04-20) — 296,170 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

How Tokyo Compares

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Notable Tsunami Events Near Tokyo

DisasterAWARE's historical archive records 5 notable tsunami events near Tokyo, ranked below by impact. The most impactful: Tsunami (Pacific Ocean - Local) - Kyushu Japan - 7.1 (August 2024) — 419,163 people exposed; $33,527M capital exposed.

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

August 7, 2024 — ADVISORY

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

Tsunami (Pacific Ocean - Regional) - Hokkaido Japan Region - 7.6

December 7, 2025 — ADVISORY

316,050 people exposed; $22,409M capital exposed

Tsunami (Pacific Ocean - Local) - Off The East Coast Of Honshu Japan - 7.4

April 19, 2026 — ADVISORY

296,170 people exposed; $22,381M capital exposed

Tsunami (Pacific Ocean - Local) - Near The East Coast Of Honshu Japan - 7.3

March 15, 2022 — ADVISORY

Impact data not available

Tsunami (Pacific Ocean - Local) - Near The East Coast Of Honshu Japan - 7.2

March 19, 2021 — ADVISORY

Impact data not available

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

Related Pages

earthquake
Earthquake Risk in Tokyo
Score: 9/10
wildfire
Wildfire Risk in Tokyo
Score: 9/10
hurricane
Hurricane Risk in Tokyo
Score: 0/10
flood
Flood Risk in Tokyo
Score: 9/10
tornado
Tornado Risk in Tokyo
Score: 0/10
winter-storm
Winter Storm Risk in Tokyo
Score: 0/10
landslide
Landslide Risk in Tokyo
Score: 9/10
extreme-heat
Extreme Heat Risk in Tokyo
Score: 5/10
drought
Drought Risk in Tokyo
Score: 3/10
high-wind
High Wind Risk in Tokyo
Score: 0/10
tsunami
Tsunami Risk in Osaka, Japan
Score: 5/10
tsunami
Tsunami Risk in Seoul, South Korea
Score: 5/10
tsunami
Tsunami Risk in Shanghai, China
Score: 9/10

How this data is built

Tokyo, Japan tsunami risk combines Historical Event Intelligence with authoritative hazard modeling from the Geospatial Intelligence Layers catalog. Live tsunami monitoring is available through the Event Intelligence API and the DisasterAWARE Platform.

The data behind this page

Every score and event here comes from DisasterAWARE's hazard database — available as downloadable historical datasets and a real-time API.

Historical tsunami event data for Tokyo, Japan — free dataset samples →Real-time tsunami alerts by API →

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