Hazardous operations 2200Z to 0530Z daily 02 thru 10 sep in areas bound by: a. 52-14.00N 167-01.00W,…
North Pacific Ocean · NAVAREA XII 594/23
What this record establishes
Archived notice · 2023-09-11 06:30Z
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) · RTS SAFETY KWAJALEIN MH 0/23 312142Z AUG 23.. Issued 2023-08-31 22:39Z. 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 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 North Pacific Ocean →
Activity windows · 9 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-09-02 22:00Z | 2023-09-03 05:30Z | — | 7 h 30 |
| 2023-09-03 22:00Z | 2023-09-04 05:30Z | — | 7 h 30 |
| 2023-09-04 22:00Z | 2023-09-05 05:30Z | — | 7 h 30 |
| 2023-09-05 22:00Z | 2023-09-06 05:30Z | — | 7 h 30 |
| 2023-09-06 22:00Z | 2023-09-07 05:30Z | — | 7 h 30 |
| 2023-09-07 22:00Z | 2023-09-08 05:30Z | — | 7 h 30 |
| 2023-09-08 22:00Z | 2023-09-09 05:30Z | — | 7 h 30 |
| 2023-09-09 22:00Z | 2023-09-10 05:30Z | — | 7 h 30 |
| … 1 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2023-08-31 22:39Z
- status
- Archived notice
- self-cancels
- 2023-09-11 06:30Z
- authority
- RTS SAFETY KWAJALEIN MH 0/23 312142Z AUG 23.
- NAVAREA
- NAVAREA XII
- issued by
- RTS SAFETY KWAJALEIN MH
- sea
- North Pacific Ocean
- position
- 51.145, -169.707
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC.
NORTH PACIFIC.
ALASKA.
1. HAZARDOUS OPERATIONS 2200Z TO 0530Z DAILY
02 THRU 10 SEP IN AREAS BOUND BY:
A. 52-14.00N 167-01.00W, 52-22.00N 167-10.00W,
51-32.00N 171-19.00W, 50-53.00N 172-26.00W,
50-13.00N 173-18.00W, 49-38.00N 172-42.00W,
49-55.00N 171-30.00W, 50-21.00N 169-50.00W.
B. 53-54.00N 157-54.00W, 53-44.00N 159-17.00W,
53-25.00N 159-10.00W, 53-35.00N 157-48.00W.
2. CANCEL NAVAREA XII 587/23
3. CANCEL THIS MSG 110630Z SEP 23.
Reading this warning
- Hazardous operations
- NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
- 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.
- NAVAREA
- One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.
- 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.
Collected reports in this area · military exercises
10 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 2200Z to 0530Z daily 31 aug thru 08 sep in areas bound by: a. 52-14.00N 167-01.00W,…2023-08-29
- Hazardous operations 2200Z to 0530Z daily 31 aug thru 08 sep in areas bound by: a. 49-38.00N 172-42.00W,…2023-08-27
- Hazardous operations 2200Z to 0530Z daily 27 thru 30 aug in areas bound by: a. 49-38.00N 172-42.00W,…2023-08-22
- Hazardous operations 302200Z to 310330Z aug, alternate 2200Z to 0330Z daily 31 aug thru 04 sep in area bound…2022-08-30
- Hazardous operations 292200Z to 300330Z aug, alternate 2200Z to 0330Z daily 30 aug thru 02 sep in area bound…2022-08-24
- Gunnery and pyrotechnic operations 242000Z to 250400Z aug in area within 500 yards of 52-54N 172-07W2018-08-24
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
31 military exercises listed in force · see all
Record snapshot 2026-09-30 08:56Z; 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.