Exercises

Gunnery exercises 020001Z to 020100Z and 020600Z to 020700Z, alternate 0001Z to 0100Z and 0600Z to 0700Z…

Philippine Sea · HYDROPAC 1533/10

What this record establishes

Archived notice · 2010-08-25 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 XI 556/10 280757Z JUL 10.. Issued 2010-07-28 09:14Z. 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
Philippine Sea. The parsed report position is 23.927, 122.174 with a 35.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Current notices and reporting history in the Philippine Sea →

Activity windows · 2 in this warning

opens (UTC)closes (UTC)locallength
2010-08-02 00:01Z2010-08-02 01:00Z—59 min
2010-08-02 06:00Z2010-08-02 07:00Z—1 h

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

issued
2010-07-28 09:14Z
status
Archived notice
self-cancels
2010-08-25 08:00Z
authority
NAVAREA XI 556/10 280757Z JUL 10.
NAVAREA
NAVAREA XI · named as the source of this relay
sea
Philippine Sea
position
23.927, 122.174 · r 35.0 nm
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

TAIWAN-EAST COAST.
GUNNERY.
1. GUNNERY EXERCISES 020001Z TO 020100Z AND
   020600Z TO 020700Z, ALTERNATE 0001Z TO 0100Z
   AND 0600Z TO 0700Z DAILY 03 AND 04,
   16 THRU 18 AND 23 THRU 25 AUG:
   A. IN AREA BETWEEN
      23-48-08N 24-03-08N AND 121-35-16E 122-45-16E.
   B. WITHIN 35 MILES OF 23-55-38N 122-10-26E.
2. CANCEL THIS MSG 250800Z AUG.

Reading this warning

Gunnery and live firing
Naval or coastal guns firing into a sea area for practice, at stated times.
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.
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.
Within a radius of
A circular area — every position within a stated distance of a point.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · military exercises

799 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
00
05
10
15
20
23

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 2026-10-04 05:10Z; 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.