Mie Prefecture (三重県) — Earthquake Risk & History
Kinki region · Based on HERP official data
Mie is one of Japan's closest prefectures to the Nankai Trough. The southern Kii Peninsula coast has among the fastest tsunami arrival times in Japan — some spots within 5 minutes of a major rupture. The 1944 and 1946 earthquakes demonstrated the scale of this threat.
Fault Lines & Seismic Characteristics
Active Faults & Trenches
- Nankai Trough
- Suo-nada Fault
Seismic Characteristics
The Nankai Trough runs just south of Mie Prefecture. Kumano-nada and the southern Kii Peninsula are among Japan's fastest tsunami arrival zones — some coastal spots face inundation within 5 minutes of a Tonankai rupture. Ise Grand Shrine itself is inland with low direct tsunami risk, but coastal tourist areas (Toba, Shima, Owase) require immediate evacuation readiness.
Earthquake History
- M8.0
1946
Nankai earthquake — tsunami struck Kii Peninsula; 1,432 dead
- M7.9
1944
Tonankai earthquake — tsunami on Kumano-nada coast
※ Showing M7+ or historically major tsunami events. Source: JMA database.
Future Probability — HERP Official Assessment
30-Year Probability (Official Figure)
Earthquake Research Committee 2023 assessment. Southern Kii Peninsula is one of Japan's fastest tsunami arrival zones — evacuate immediately upon strong shaking without waiting for official warnings.
Traveler Safety Information
Finding Evacuation Shelters
- ✅ Search "避難所" (hinanjo) on Google Maps to find the nearest shelter from your current location
- ✅ Install NHK World or Safety tips (Japan Tourism Agency app) — both send English earthquake alerts
- ✅ Mie Prefecture official disaster prevention page (Japanese) — includes shelter maps
Basic Action Rules
- ✅ At check-in, locate emergency exits and escape routes
- ✅ On strong shaking: protect your head, open a door to secure an exit, do not use elevators
- ✅ Near coasts or rivers: move to high ground immediately — do not wait for a tsunami warning
- ✅ Emergency numbers: Police 110 · Ambulance/Fire 119
- ✅ Contact your embassy in Tokyo for emergency consular assistance
Research & Official Sources AI summary
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Minimum tsunami arrival time simulation for Mie Prefecture
Some southern Mie coastal areas could receive tsunami waves just 5–8 minutes after a Nankai Trough rupture. The behavioral default must be: evacuate immediately upon strong shaking, without waiting for official warnings.
Source: 미에현 방재환경과 (2023) -
Tsunami evacuation guidance for Ise Jingu and Ise-Shima visitors
Ise Grand Shrine (Inner and Outer Shrines) is inland with low direct tsunami risk. However, coastal areas (Toba, Shima, Owase) require immediate evacuation. Mie itineraries often combine Ise, Toba, and Kumano Kodo — check tsunami evacuation tower locations before each coastal leg of your journey.
Source: 미에현 방재환경과·이세시관광협회 (2023)
Related Guides
Seismic characteristics and research summaries on this page are AI-generated from publicly available data by JMA, Cabinet Office, and HERP. Historical earthquake data (year, magnitude, damage) is based on official records, but key figures should always be cross-checked with the latest official sources. This page does not predict future earthquakes.