International Disaster and Emergency Monitoring Center

Preliminary earthquake data and analysis


Earthquake Report
Base data
Event ID 1521998
Event time 2025-12-07 22:45:30 (UTC)
Local time 2025-12-07 13:45:30 - [It was afternoon in the affected area.]
Last update 2025-12-07 22:56:20 (UTC)
Magnitude 3.1
Depth 60 km
Class Minor
Hypocenter Shallow depth
Mercalli scale 1
Possible effects People do not feel any Earth movement.
Data status
Data provider EMSC

Location
Continent Asia
Country Japan
Administration area Saitama
Nearest settlement Washinomiya
Distance 4 km
Course E
Surface type underground quake



Risk Analisys
Nearest nuclear power plants
There is no known nuclear power plant nearby.
Nearest marine ports
Tokyo Ko (48,29 km), Funabashi (53,12 km), Katsunan Ko (54,46 km), Chiba Ko (66,21 km), Kawasaki Ko (66,85 km)
Nearest airports
Iruma Air Base (38,73 km), Shimofusa Airport (43,63 km), Kasumigaura Airport (45,00 km), Utsunomiya Airport (48,49 km), Akasaka Press Center Heliport (48,51 km)
Nearest volcanoes
Akagisan volcano (68,39 km), Sukai-Kesemaru volcano (72,70 km)
Quick Analysis