Hazardous operations 2300Z to 0100Z commencing daily 18 thru 20 dec and 0400Z to 0700Z daily 19 thru 21 dec…
Japan Sea · HYDROPAC 2334/09
What this record establishes
Archived notice · 2009-12-21 08:00Z
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 53/09 13 DEC 09.. Issued 2009-12-13 10:54Z. 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
- Japan Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Activity windows · 6 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2009-12-18 23:00Z | 2009-12-19 01:00Z | — | 2 h |
| 2009-12-19 04:00Z | 2009-12-19 07:00Z | — | 3 h |
| 2009-12-19 23:00Z | 2009-12-20 01:00Z | — | 2 h |
| 2009-12-20 04:00Z | 2009-12-20 07:00Z | — | 3 h |
| 2009-12-20 23:00Z | 2009-12-21 01:00Z | — | 2 h |
| 2009-12-21 04:00Z | 2009-12-21 07:00Z | — | 3 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2009-12-13 10:54Z
- status
- Archived notice
- self-cancels
- 2009-12-21 08:00Z
- authority
- NAVAREA XIII 53/09 13 DEC 09.
- NAVAREA
- NAVAREA XIII · named as the source of this relay
- sea
- Japan Sea
- position
- 48.596, 140.800
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS 2300Z TO 0100Z COMMENCING
DAILY 18 THRU 20 DEC AND 0400Z TO 0700Z DAILY
19 THRU 21 DEC IN AREAS:
A. BETWEEN
47-30.0N 47-55.0N AND 140-35.0E 140-55.0E.
B. BOUND BY
47-28.0N 140-30.5E, 48-50.0N 140-39.0E,
49-23.5N 140-27.0E, 49-29.0N 140-31.5E,
50-05.0N 140-42.0E, 48-45.5N 141-09.0E,
47-28.0N 140-59.0E.
2. CANCEL THIS MSG 210800Z DEC.
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.
- 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
49 within 180 nm since 2004 · 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 1300Z daily 19 jun thru 14 jul in area bound by 47-01.00N 141-20.80E,…2025-06-16
- Gunnery exercises 2200Z to 1300Z daily 25 may to 19 jun in area bound by 47-01.00N 141-20.80E, 46-57.50N…2025-06-04
- Gunnery exercises 2200Z to 1300Z daily 23 jan thu 20 feb in area bound by 47-01.00N 141-20.80E, 46-57.50N…2025-01-18
- Gunnery exercises 2200Z to 1200Z daily 30 sep thru 24 oct in area bound by 47-01.00N 141-20.80E, 46-57.50N…2024-09-25
- Gunnery exercises 2200Z to 1200Z daily 17 thru 29 apr in area bound by 47-01.00N 141-20.80E, 46-57.50N…2024-04-16
- Gunnery exercises 2200Z to 1200Z daily 13 thru 28 mar in area bound by 46-57.50N 141-34.50E, 47-01.00N…2024-03-11
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 2026-10-03 16:42Z; 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.