Volcanic

Discolored water with submarine volcanic activity within three miles of 27-14.6N 140-52.7E at 280431Z sep

Philippine Sea · HYDROPAC 3569/18

issued
2018-09-28 16:40Z
status
cancelled 2018-10-31 11:09Z (archive)
authority
NAVAREA XI 505/18 281238Z SEP 18.
sea
Philippine Sea
position
27.243, 140.878 · r 3.0 nm
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

PHILIPPINE SEA.
DNC 12.
CHART 97000.
DISCOLORED WATER WITH SUBMARINE VOLCANIC ACTIVITY
WITHIN THREE MILES OF 27-14.6N 140-52.7E
AT 280431Z SEP.

This area · volcanic activity

48 within 180 nm since 1996 · 1 in the last 12 months · 6 in force now

96
00
05
10
15
20
25

Season · when volcanic activity happen here

J
F
M
A
M
J
J
A
S
O
N
D

month of issue, all years in the archive

Timeline

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.