Hazardous operations 2200Z to 1000Z daily 17 thru 21 apr in areas bound by: a. 46-05.00N 148-45.00E,…
North Pacific Ocean · HYDROPAC 1262/23
What this record establishes
Archived notice · 2023-04-22 11:00Z
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 XIII 44/23 160905Z APR 23.. Issued 2023-04-16 10:05Z. 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.
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 5 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-04-17 22:00Z | 2023-04-18 10:00Z | — | 12 h |
| 2023-04-18 22:00Z | 2023-04-19 10:00Z | — | 12 h |
| 2023-04-19 22:00Z | 2023-04-20 10:00Z | — | 12 h |
| 2023-04-20 22:00Z | 2023-04-21 10:00Z | — | 12 h |
| 2023-04-21 22:00Z | 2023-04-22 10:00Z | — | 12 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2023-04-16 10:05Z
- status
- Archived notice
- self-cancels
- 2023-04-22 11:00Z
- authority
- NAVAREA XIII 44/23 160905Z APR 23.
- NAVAREA
- NAVAREA XIII · named as the source of this relay
- sea
- North Pacific Ocean
- position
- 45.519, 150.081
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEA OF OKHOTSK.
WESTERN NORTH PACIFIC.
KURIL ISLANDS.
DNC 24.
1. HAZARDOUS OPERATIONS 2200Z TO 1000Z DAILY
17 THRU 21 APR IN AREAS BOUND BY:
A. 46-05.00N 148-45.00E, 46-10.00N 149-15.00E,
45-30.00N 149-23.00E, 45-23.30N 149-00.00E.
B. 45-27.30N 149-24.30E, 46-03.00N 150-33.50E,
45-35.00N 150-45.00E, 45-03.00N 149-46.00E.
C. 44-35.50N 147-21.30E, 45-15.00N 148-50.00E,
44-55.00N 149-10.00E, 44-15.00N 147-43.00E.
D. 47-05.00N 150-40.00E, 47-15.00N 151-35.00E,
46-27.00N 151-45.00E, 46-15.00N 151-10.00E.
2. CANCEL THIS MSG 221100Z APR 23.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- 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.
- 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
35 within 180 nm since 2010 · 1 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.
- Gunnery exercises 2000Z to 1200Z daily 09 thru 14 aug in areas bound by: a. 46-41.00N 146-02.00E, 45-13.00N…2026-08-11
- Hazardous operations 250700Z sep to 080700Z oct in area bound by 46-20.00N 151-05.00E, 46-49.10N 151-00.50E,…2024-09-24
- Gunnery exercises in progress until 151200Z may in area bound by 46-55.40N 151-26.00E, 46-34.40N 151-43.70E,…2024-04-23
- Gunnery exercises 171100Z to 221300Z apr in area bound by 46-55.40N 151-26.00E, 46-49.10N 151-00.50E,…2024-04-17
- Gunnery exercises 2300Z to 1000Z daily 04 oct thru 04 nov in area bound by 44-05.00N 146-56.00E, 44-05.00N…2023-09-29
- Hazardous operations 2200Z to 1000Z daily 17 thru 21 apr in areas bound by: a. 45-46.00N 147-55.00E,…2023-04-15
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 17:44Z; 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.