Volcano Iwate
Called the 'Nanbu Fuji', this 2,038 m cone towers over the city of Morioka. Its 1732 Yakehashiri lava flow is still so bare that it is protected as a national natural monument, and in 1998 swarms of earthquakes and swelling of the mountain closed its trails for years — a scare that made it one of Japan's most closely watched volcanoes.
Last Eruption
Erupted in the 20th century
Summit Elevation
Complex volcano · Basalt / Picro-Basalt
Seismic State
0 events (1.0x rate)
Interactive Volcano & Seismicity Map
Seismicity within 50 km radius, active VAAC ash plumes, and tectonic plate boundaries.
Recent seismicity within 50 km
0 events in the last 12 h within 25 km of the crater.
| Time | Magnitude | Epicenter / Place | Distance |
|---|---|---|---|
| 3d ago | M4.3 | 15 km NNE of Semboku, Japan | 19 km |
| 56d ago | M2.7 | 秋田県内陸北部, Japan | 38 km |
| 63d ago | M3.5 | EASTERN HONSHU, JAPAN (JMA) | 38 km |
Geological & Tectonic Profile
Complex volcanoIwate is an active Complex formed in an active Subduction zone / Continental crust (> 25 km). Dominant lithology: Basalt / Picro-Basalt.
Volcanic Dossier
VN #283240Official catalogue parameters, coordinates, elevation and geotectonic classification.
Authoritative Monitoring Infrastructure
Sanriku & Tohoku Coast
Explore live seismic monitoring, historical danger benchmarks, fault slip models and recurrence intervals for Sanriku & Tohoku Coast.
Open Regional HubFrequently Asked Questions (FAQ)
Verified scientific, operational, and emergency protocols
Catalogue: Smithsonian Institution, Global Volcanism Program.Smithsonian GVP profile