Volcanic

Discolored water reported in 20-36N 145-14E

HYDROPAC 454/99

issued: 1999-05-23 10:20Z
status: cancelled 2000-10-06 09:30Z (archive)
authority: NAVAREA XI 310/99 230800Z MAY 1999
position: 20.600, 145.233
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

CHART 81004 (2ND ED).
DISCOLORED WATER REPORTED IN 20-36N 145-14E.

This area · volcanic activity

10 within 180 nm since 1999 · 2 in the last 12 months · 2 in force now

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 20-25.2N 145-01.8E at 012230Z jan2024-01-01
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

Season · when volcanic activity happen here

month of issue, all years in the archive

Timeline

HYDROPAC messages in force 060800Z oct 2000cancelled by · 2000-10-06

Nearby now · within 120 nm

Discoloured water reported in vicinity of 20-26.0N 145-01.0E at 160013Z julVolcanic · 15.8 nm
Discolored water with increased likelihood of submarine volcanic activity reported in vicinity 20-26.00N…Volcanic · 15.8 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.