Volcanic

Volcanic activity within two miles of 30-26.7N 130-12.9E

Eastern China Sea · HYDROPAC 1755/15

What this record establishes

Archived notice · 2016-06-14 10:10Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA XI 386/15 290551Z MAY 15.. Issued 2015-05-29 07:20Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Eastern China Sea. The parsed report position is 30.445, 130.215 with a 2.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Related notices and cancellation links

These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.

  1. HYDROPAC 1753/152015-05-29 · Archived notice
  2. HYDROPAC 1755/15 · this notice2015-05-29 · Archived notice
Compare all 2 notices, changes and original texts →

Current notices and reporting history in the Eastern China Sea →

issued
2015-05-29 07:20Z
status
Archived notice
authority
NAVAREA XI 386/15 290551Z MAY 15.
NAVAREA
NAVAREA XI · named as the source of this relay
sea
Eastern China Sea
position
30.445, 130.215 · r 2.0 nm
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
JAPAN.
NANSEI SHOTO.
DNC 23.
CHART 97440.
1. VOLCANIC ACTIVITY WITHIN TWO MILES
   OF 30-26.7N 130-12.9E.
2. CANCEL HYDROPAC 1753/15.

Reading this warning

DNC (Digital Nautical Chart)
A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
Chart reference
The number of the nautical chart on which the reported position lies.
Volcanic activity
An erupting or restless volcano near or under the sea, with a keep-clear radius around it.
Within a radius of
A circular area — every position within a stated distance of a point.
Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROPAC
The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.

All warning terms →

Collected reports in this area · volcanic activity

3 within 180 nm since 2015 · 0 in the last 12 months · 0 listed in force now

15
18

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

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

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

12 volcanic activity listed in force · see all

Record snapshot 2026-10-02 20:42Z; source collection times vary.

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.