Volcano in Japan
Akagisan volcano: eruption status today
Updated
No eruption of Akagisan is being reported right now Last eruption: A.D. 1–1499; last significant eruption 1947 (NOAA NCEI).
Live status of Akagisan: whether it is erupting now, satellite hot spots, earthquakes around it, and what an eruption would mean for nearby cities and flights.
- Status now
- No open report
- Last eruption
- A.D. 1–1499 last significant: 1947
- Elevation
- 1,828 m 5,998 ft
- Type
- Stratovolcano
- Earthquakes within 50 km
- 1 past 30 days (USGS)
- Hot spots within 10 km
- 0 latest NASA FIRMS VIIRS data
- Nearest city
- Maebashi 20 km SSW
Is Akagisan erupting right now?
There is no open NASA EONET event for Akagisan right now. NOAA NCEI dates its most recent eruption to a.d. 1–1499, and the last eruption in its significant-eruption database was in 1947. Volcano observatories can raise alert levels before an eruption starts, so check the national observatory for the current alert level.
No satellite thermal hot spot was detected within 10 km of the summit in the latest NASA FIRMS data, so there is no sign of lava at the surface large enough for VIIRS to see (clouds can hide it).
Earthquakes near Akagisan
USGS located 1 earthquake within 50 km of Akagisan in the past 30 days, 0 of them in the last week. The largest was M4.6 on Oct 7, 2026, 13 km ESE of the summit at 96 km depth.
0 of them were shallower than 10 km. Swarms of shallow quakes can mean magma or gas is moving, but most swarms end without an eruption; observatories combine them with ground deformation and gas data.
| Time (UTC) | Magnitude | Distance | Depth | Location |
|---|---|---|---|---|
| Oct 7, 19:36 UTC | M4.6 | 13 km ESE | 96 km | 9 km NNE of Midori, Japan |
About Akagisan
Akagisan is a stratovolcano in Honshu-Japan, Japan, rising to 1,828 m (5,998 ft). NOAA NCEI classes its eruptive history as "Historical".
Stratovolcanoes are steep cones built from alternating lava and ash layers; their eruptions are often explosive, with ash columns that can reach cruising altitude.
The nearest large town is Maebashi, about 20 km SSW of the summit; 5 other cities lie within 250 km.
- Maebashi (20 km) earthquakes nearby
- Kiryū (22 km) earthquakes nearby
- Isesaki (27 km) earthquakes nearby
- Takasaki (30 km) earthquakes nearby
- Ōta, Gunma (33 km) earthquakes nearby
- Ashikaga (34 km) earthquakes nearby
Flights and volcanic ash
2 major airports are within 400 km; the closest is Haneda (HND), 124 km away. Volcanic ash melts in jet engines, so an explosive eruption can close airspace and cancel flights even far downwind.
Volcanic Ash Advisory Centres (VAACs) issue the official ash advisories that airlines and air traffic control follow.
| Airport | Distance | Direction |
|---|---|---|
| Haneda (HND) | 124 km | SSE |
| Narita (NRT) | 139 km | SE |
Other volcanoes in Japan
Japan has 52 volcanoes on this site that erupted since 1900 or are active now, 3 of them with an open NASA activity report today. The closest other one is Kusatsu-Shiranesan, 60 km away.
Nearby volcanoes
Volcanoes in Japan
More
Data: NOAA NCEI Volcano Locations, NASA EONET (open volcano events), USGS earthquakes, NASA FIRMS (VIIRS hot spots), Smithsonian Global Volcanism Program.