Exercises

Gunnery exercises 141900Z to 150001Z sep in area within 11 miles of 47-34N 154-07W

North Pacific Ocean · NAVAREA XII 404/17

What this record establishes

Archived notice · 2017-09-15 01:01Z

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) · COMCOGARD SECTOR ANCHORAGE 125/17 131800Z SEP 17.. Issued 2017-09-13 18:11Z. 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
North Pacific Ocean. The parsed report position is 47.567, -154.117 with a 11.0 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 North Pacific Ocean →

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2017-09-14 19:00Z2017-09-15 00:01Z—5 h 01

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

issued
2017-09-13 18:11Z
status
Archived notice
self-cancels
2017-09-15 01:01Z
authority
COMCOGARD SECTOR ANCHORAGE 125/17 131800Z SEP 17.
NAVAREA
NAVAREA XII
issued by
COMCOGARD SECTOR ANCHORAGE
sea
North Pacific Ocean
position
47.567, -154.117 · r 11.0 nm
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN NORTH PACIFIC.
1. GUNNERY EXERCISES 141900Z TO 150001Z SEP
   IN AREA WITHIN 11 MILES OF 47-34N 154-07W.
2. CANCEL THIS MSG 150101Z SEP 17.

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.
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.
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

5 within 180 nm since 2011 · 0 in the last 12 months · 0 listed in force now

11
15
17

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 2026-10-03 03:44Z; 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.