Niigata Prefecture (新潟県) — Earthquake Risk & History
Chubu region · Based on HERP official data
Niigata faces the Sea of Japan and has a history of severe inland earthquakes. The 2004 Chuetsu (M6.8) and 2007 Chuetsu-oki (M6.8) earthquakes caused serious damage, while the Japan Sea Eastern Margin Fault Zone remains the largest offshore threat.
Fault Lines & Seismic Characteristics
Active Faults & Trenches
- Japan Sea Eastern Margin Fault Zone
- Shinano River Fault Zone
- Fushino Fault
Seismic Characteristics
The Japan Sea Eastern Margin Fault Zone lies offshore to the west of Niigata, capable of M7–8 earthquakes. The 1964 Niigata earthquake (M7.5) caused Japan's first documented large-scale urban liquefaction. Inland, the Shinano River Fault Zone is also active.
Earthquake History
- M6.8
2007
Chuetsu-oki earthquake — fire at Kashiwazaki-Kariwa nuclear plant; 11 dead
- M6.8
2004
Chuetsu earthquake — Joetsu Shinkansen derailed; 68 dead
- M7.5
1964
Niigata earthquake — Japan's first major documented urban liquefaction recorded in Niigata City
※ Showing M6.5+ or Intensity 5+ events. Source: JMA database.
Future Probability — HERP Official Assessment
30-Year Probability (Official Figure)
Long-term evaluation by the Earthquake Research Committee. Niigata's coastal lowlands face combined tsunami and liquefaction risk. Visitors near Kashiwazaki-Kariwa nuclear plant should be aware of the plant's emergency planning zone.
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
- ✅ Niigata 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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Japan Sea Eastern Margin Fault Zone and tsunami preparedness
An M7–8 earthquake on the Japan Sea Eastern Margin Fault Zone could send tsunami waves reaching the Niigata coast in approximately 30 minutes. Improving evacuation routes along low-lying coastal areas remains an ongoing priority.
Source: 니가타현 지진방재연구소 (2022) -
2004 Chuetsu earthquake: recovery and current travel safety
Areas hit hardest by the 2004 Chuetsu earthquake — Nagaoka, Ojiya — have fully recovered. Niigata is popular for Koshihikari rice and onsen resorts. For coastal areas, confirm tsunami information immediately after any earthquake.
Source: 니가타현 방재국·나가오카시 (2023) -
Niigata City lowland liquefaction risk
Niigata City's lowlands were the site of Japan's first large-scale urban liquefaction in 1964. Ground improvement works have been carried out, but the alluvial soil means large events could cause recurrence. Be aware of this risk in accommodation near rivers and the port.
Source: 니가타대학 재해복구과학연구소 (2022)
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.