Volcanic activity in 2024

Submarine eruptions, discoloured water, pumice rafts.

issued in 2024: 4
still in force: 2
vs 2023: -60%
first · last: 01-01 · 09-19

Coverage note: the NGA archive ends 2024-05 and live collection began 2026-08-17. Warnings issued in between are here only if they were still in force when collection started, so this year is under-counted.

By month

By NAVAREA series

HYDROPAC2
NAVAREA XI2

Where · top seas

North Pacific Ocean	2	50%
Philippine Sea	2	50%

All volcanic activity issued in 2024 · 4

NAVAREA XI 491/24in force2024-09-19
Discoloured water observed near Nanpo Shoto at 31-26.4N 140-03.0E on September 18, 2024 at 0545Z. Vessels advised caution.
North Pacific, Nanpo Shoto
NAVAREA XI 492/24in force2024-09-19
As of September 19, a volcanic warning for Sumisu Shima at 31-26.3N 140-03.0E expects eruption influence around the volcano.
North Pacific, Nanpo Shoto
HYDROPAC 153/242024-01-13 → 2026-08-14
Discolored water with increased likelihood of submarine volcanic activity reported near Northern Mariana Islands at 20-25N 145-01E on January 13.
Western North Pacific · Northern Mariana Islands
HYDROPAC 12/242024-01-01 → 2026-08-14
Submarine volcanic activity causing discolored water reported in Northern Mariana Islands at 20-25.2N 145-01.8E at 22:30 UTC January 1.
Western North Pacific · Northern Mariana Islands

Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts and your national MSI service.