Exercises

Gunnery exercises 2300Z to 0100Z commencing daily 16 thru 20 jun and 0400Z to 0700Z daily 17 thru 21 jun in…

Japan Sea · HYDROPAC 1105/08

What this record establishes

Archived notice · 2008-06-21 08:00Z

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 XIII 15/08 11 JUN 08.. Issued 2008-06-11 12:20Z. 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
Japan Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Japan Sea →

Activity windows · 10 in this warning

opens (UTC)closes (UTC)locallength
2008-06-16 23:00Z2008-06-17 01:00Z—2 h
2008-06-17 04:00Z2008-06-17 07:00Z—3 h
2008-06-17 23:00Z2008-06-18 01:00Z—2 h
2008-06-18 04:00Z2008-06-18 07:00Z—3 h
2008-06-18 23:00Z2008-06-19 01:00Z—2 h
2008-06-19 04:00Z2008-06-19 07:00Z—3 h
2008-06-19 23:00Z2008-06-20 01:00Z—2 h
2008-06-20 04:00Z2008-06-20 07:00Z—3 h
… 2 more

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued
2008-06-11 12:20Z
status
Archived notice
self-cancels
2008-06-21 08:00Z
authority
NAVAREA XIII 15/08 11 JUN 08.
NAVAREA
NAVAREA XIII · named as the source of this relay
sea
Japan Sea
position
48.858, 140.827
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. GUNNERY EXERCISES 2300Z TO 0100Z COMMENCING DAILY
   16 THRU 20 JUN AND 0400Z TO 0700Z DAILY
   17 THRU 21 JUN IN AREA BOUND BY
   48-48.0N 140-45.5E, 48-54.5N 140-39.5E,
   48-54.5N 140-57.0E, 48-48.0N 140-57.0E.
2. CANCEL HYDROPAC 1080/08(96).
3. CANCEL THIS MSG 210800Z JUN.

Reading this warning

Gunnery and live firing
Naval or coastal guns firing into a sea area for practice, at stated times.
Area bound by
Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
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.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.
Date-time group (DTG)
A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.

All warning terms →

Collected reports in this area · military exercises

47 within 180 nm since 2004 · 0 in the last 12 months · 0 listed in force now

04
05
10
15
20
25

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

9 military exercises listed in force · see all

Record snapshot 2026-10-02 15:03Z; source collection times vary.

Exercises

Gunnery, firing and naval exercise areas. All current military exercises →

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.