Open Earth

Ōmamachō-ōmama

Live hazards, weather and earthquake history for Ōmamachō-ōmama, Gunma, Japan. Updated automatically from official sources.

Notable events within 100 km, 12 months

6

Quakes within 100 km, 12 months (all sizes)

6

Strongest nearby, 10 years

M5.8

Nearest volcano

16 km

Akagisan

Hazard summary for Ōmamachō-ōmama

In the past 12 months 6 notable hazard events were recorded within 100 km of Ōmamachō-ōmama. Instruments also logged 6 earthquakes of all sizes in the same area. The strongest earthquake within 100 km in the last ten years measured magnitude 5.8. The largest quake on record within 300 km was a magnitude 8.0 on 1 Sept 1923. The nearest volcano is Akagisan, about 16 km away.

Notable events within 100 km, by month

Recent activity nearby

Events within 300 km in the last 90 days.

Strongest earthquakes on record

Magnitude 5 and above within 300 km, since 1900.