Alamagan, United States
Alamagan is a stratovolcano in the United States, 744 m (2,441 ft) high. Its last known eruption: aD 1 to 1499. NOAA records no significant eruption here.
Alamagan on the map
Alamagan and the volcanoes within 300 km, colored by when each last erupted.
- Since 1964
- 1900 to 1963
- 1800s
- AD 1 to 1799
- Before AD 1, or undated
Now
From the USGS Volcano Hazards Program, read 16:31 UTC. USGS threat ranking: High Threat.
Unassigned / Unassigned USGS, Northern Mariana Islands rates Alamagan at alert level Unassigned, aviation color code Unassigned.
The volcano
- Type
- Stratovolcano
- Elevation
- 744 m (2,441 ft)
- Country
- United States
- Region
- Mariana Is-C Pacific
- Summit
- 17.600° N, 145.830° E
- Last known eruption
- AD 1 to 1499
- Holocene activity known from
- Radiocarbon
- Smithsonian volcano number
- 284180
Significant eruptions
NOAA records eruptions that killed, did damage, were very large, or set off a tsunami or earthquake.
None on record.
Around it
The volcanoes within 300 km.
Earthquakes near AlamaganVolcanic ash advisories on the live map
Sources
Volcanoes and significant eruptions from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. Alert levels, color codes and notices from the USGS Volcano Hazards Program and its observatories, public domain. Volcano numbers are the Smithsonian Institution’s Global Volcanism Program’s.