Missile operations 2100Z to 0900Z daily 13 thru 18 dec in area bound by 42-28.2N 131-56.1E, 42-28.2N…
Japan Sea · HYDROPAC 3645/20
What this record establishes
Archived notice · 2020-12-19 10:00Z
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 XI 476/20 091136Z DEC 20.. Issued 2020-12-09 11:47Z. 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.
Related notices and cancellation links
- Cancel HYDROPAC 2991/20, 3195/20, 3645/20, and this msglater cancellation notice
These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.
- HYDROPAC 2985/202020-10-14 · Archived notice
- HYDROPAC 3185/202020-10-29 · Archived notice
- HYDROPAC 3476/202020-11-24 · Archived notice
- HYDROPAC 3537/202020-11-30 · Archived notice
- HYDROPAC 3645/20 · this notice2020-12-09 · Archived notice
Activity windows · 6 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2020-12-13 21:00Z | 2020-12-14 09:00Z | — | 12 h |
| 2020-12-14 21:00Z | 2020-12-15 09:00Z | — | 12 h |
| 2020-12-15 21:00Z | 2020-12-16 09:00Z | — | 12 h |
| 2020-12-16 21:00Z | 2020-12-17 09:00Z | — | 12 h |
| 2020-12-17 21:00Z | 2020-12-18 09:00Z | — | 12 h |
| 2020-12-18 21:00Z | 2020-12-19 09:00Z | — | 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
- 2020-12-09 11:47Z
- status
- Archived notice
- self-cancels
- 2020-12-19 10:00Z
- authority
- NAVAREA XI 476/20 091136Z DEC 20.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Japan Sea
- position
- 42.143, 132.730
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SEA OF JAPAN. RUSSIA. DNC 23, DNC 24. 1. MISSILE OPERATIONS 2100Z TO 0900Z DAILY 13 THRU 18 DEC IN AREA BOUND BY 42-28.2N 131-56.1E, 42-28.2N 133-17.2E, 42-14.2N 133-43.0E, 41-58.1N 133-43.0E, 41-43.5N 131-56.1E. 2. CANCEL THIS MSG 191000Z DEC 20.
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.
- Missile firing
- Missile tests or exercises, with the danger area and times during which missiles may be in flight or falling.
- 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 · missile & rocket hazards
171 within 180 nm since 2010 · 5 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.
- Missile firing2026-09-09
- Missile operations 1400Z to 0800Z daily 14 thru 18 sep in area bound by 42-31.50N 131-16.00E, 42-38.40N…2026-09-09
- Missile operations 1400Z to 0800Z daily 25 thru 30 aug in area bound by 42-43.90N 132-50.60E, 42-30.50N…2026-08-20
- Missile firing2026-08-20
- Missile operations 2300Z to 1500Z daily 11 thru 16 and 18 thru 30 jan in area bound by 42-00.00N 132-20.00E,…2026-01-08
- Missile operations 230001Z to 231000Z, 240001Z to 241400Z and 260500Z to 261400Z apr in area bound by…2024-04-19
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
8 missile & rocket hazards listed in force · see all
Record snapshot 2026-10-02 23:15Z; source collection times vary.
Missiles
Missile firings, rocket launches and space debris re-entry areas. All current missile & rocket hazards →
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.