Gunnery and pyrotechnic operations 231600Z to 240001Z sep in area within 21 miles of 54-13N 158-10W
North Pacific Ocean · NAVAREA XII 425/17
What this record establishes
Archived notice · 2017-09-24 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 130/17 220512Z SEP 17.. Issued 2017-09-22 06:15Z. 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 54.217, -158.167 with a 21.0 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) | local | length |
|---|---|---|---|
| 2017-09-23 16:00Z | 2017-09-24 00:01Z | — | 8 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
- 2017-09-22 06:15Z
- status
- Archived notice
- self-cancels
- 2017-09-24 01:01Z
- authority
- COMCOGARD SECTOR ANCHORAGE 130/17 220512Z SEP 17.
- NAVAREA
- NAVAREA XII
- issued by
- COMCOGARD SECTOR ANCHORAGE
- sea
- North Pacific Ocean
- position
- 54.217, -158.167 · r 21.0 nm
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC. ALASKA. 1. GUNNERY AND PYROTECHNIC OPERATIONS 231600Z TO 240001Z SEP IN AREA WITHIN 21 MILES OF 54-13N 158-10W. 2. CANCEL THIS MSG 240101Z 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.
Collected reports in this area · military exercises
13 within 180 nm since 2008 · 0 in the last 12 months · 0 listed in force now
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.
- Hazardous operations 292200Z to 300330Z aug, alternate 2200Z to 0330Z daily 30 aug thru 02 sep in area bound…2022-08-24
- Hazardous operations 190830Z to 191430Z oct, alternate 0830Z to 1430Z daily 20 thru 29 oct in areas bound…2021-10-15
- Hazardous operations 210830Z to 211430Z jun, alternate 0830Z to 1430Z daily 22 thru 30 jun in areas bound…2021-06-22
- Hazardous operations 210830Z to 211430Z jun, alternate 0830Z to 1430Z daily 22 thru 25 jun in areas bound…2021-06-16
- Gunnery exercise 282200Z to 290700Z may within 30000 yards of 54-15N 158-00W2015-05-28
- Gunnery exercise 272200Z to 280700Z may within 30000 yards of 54-15N 158-00W2015-05-26
Month of issue in the collected archive
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 23:30Z; 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.