VOLCANO

GVP volcano 284141 · no holder yet

Ahyi

Ahyi is a submarine stratovolcano 55 m under the Philippine Sea, erupting as recently as 2026.

USGS: alert level ADVISORY, aviation colour code YELLOW (Northern Mariana Islands, 2026-10-08 23:31:51 UTC).

Type
Stratovolcano (composite landform)
Summit
55 m below sea level
Rock
Andesite / Basaltic Andesite
Setting
Subduction zone, thickness unknown
Last eruption
2026
Largest known
VEI 2, explosive, 2014
Eruptions
12 confirmed in the record
Where
20.44°N 145.03°E · The Philippine Sea
Region
Mariana Volcanic Arc, Northwestern Pacific Volcanic Regions
Record
Global Volcanism Program, volcano 284141

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Not a hazard warning. For safety information follow USGS Volcano Hazards Program.