Gunnery exercises 191600Z to 192300Z aug in area within one mile of 56-27.4N 151-48.4W
Gulf of Alaska · NAVAREA XII 376/20
What this record establishes
Archived notice · 2020-08-20 00:01Z
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 95/20 180439Z AUG 20.. Issued 2020-08-18 05:14Z. 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
- Gulf of Alaska. The parsed report position is 56.457, -151.807 with a 1.0 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 Gulf of Alaska →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2020-08-19 16:00Z | 2020-08-19 23:00Z | — | 7 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2020-08-18 05:14Z
- status
- Archived notice
- self-cancels
- 2020-08-20 00:01Z
- authority
- COMCOGARD SECTOR ANCHORAGE 95/20 180439Z AUG 20.
- NAVAREA
- NAVAREA XII
- issued by
- COMCOGARD SECTOR ANCHORAGE
- sea
- Gulf of Alaska
- position
- 56.457, -151.807 · r 1.0 nm
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
GULF OF ALASKA. ALASKA. 1. GUNNERY EXERCISES 191600Z TO 192300Z AUG IN AREA WITHIN ONE MILE OF 56-27.4N 151-48.4W. 2. CANCEL THIS MSG 200001Z AUG 20.
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
11 within 180 nm since 2010 · 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 300300Z to 300930Z jul, alternate 310300Z to 310930Z jul and 010300Z to 010930Z aug in…2017-07-25
- Hazardous operations 100300Z to 100930Z jul, alternate 0300Z to 0930Z daily 11 thru 13 jul in areas bound…2017-07-05
- Gunnery exercises 252000Z to 260300Z may within 12000 yards of: a. 54-15N 158-00W2015-05-24
- Gunnery exercises 191600Z to 200200Z mar within five miles of 57-26N 151-27W2015-03-18
- Gunnery exercises 301800Z to 302100Z sep within five miles of 58-47N 151-09W2014-09-29
- Gunnery exercises 300100Z to 300400Z sep within five miles of 58-47.0N 151-09.1W2014-09-26
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
Worldwide in the collected sources
28 military exercises listed in force · see all
Record snapshot 2026-10-02 07:26Z; 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.