Volcanic
Discolored water with submarine volcanic activity reported in 20-25.2N 145-01.8E at 012230Z jan
Western North Pacific · Northern Mariana Islands · HYDROPAC 12/24
- issued
- 2024-01-01 23:22Z
- status
- cancelled 2026-08-14 18:10Z (dropped from inforce)
- authority
- US GEOLOGICAL SURVEY 0/24 012312Z JAN 24.
- position
- 20.420, 145.030
- source
- nga_json · first seen 2026-08-17 13:41Z
Original warning text
WESTERN NORTH PACIFIC. NORTHERN MARIANA ISLANDS. DNC 12. DISCOLORED WATER WITH SUBMARINE VOLCANIC ACTIVITY REPORTED IN 20-25.2N 145-01.8E AT 012230Z JAN.
This area · volcanic activity
10 within 180 nm since 1999 · 2 in the last 12 months · 2 in force now
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26
- Discolored water with increased likelihood of submarine volcanic activity reported in vicinity 20-26.00N…2026-07-16
- Discoloured water reported in vicinity of 20-26.0N 145-01.0E at 160013Z jul2026-07-16
- Discolored water with increased likelihood of submarine volcanic activity reported in 20-25.00N 145-01.00E…2024-01-13
- Discolored water with submarine volcanic activity reported in 20-25.20N 145-01.80E at 270127Z jan2023-01-28
- Cancel HYDROPAC 1304/142014-05-06
- Mariana Islands2014-05-05
Season · when volcanic activity happen here
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month of issue, all years in the archive
Nearby now · within 120 nm
Worldwide now
12 volcanic activity in force · see all
Volcanic
Submarine eruptions, discoloured water, pumice rafts. All current volcanic activity →
Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.