Hazardous operations 1430Z to 1730Z daily 11 thru 16 dec in areas bound by: a. 24-40.00N 164-32.00W,…
North Pacific Ocean · NAVAREA XII 841/23
What this record establishes
Archived notice · 2023-12-11 17:52Z
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 428/23 211909Z NOV 23.. Issued 2023-12-06 10:11Z. 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
- Cancel NAVAREA XII 841/23 and this msg, operations completedlater cancellation notice
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 6 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-12-11 14:30Z | 2023-12-11 17:30Z | — | 3 h |
| 2023-12-12 14:30Z | 2023-12-12 17:30Z | — | 3 h |
| 2023-12-13 14:30Z | 2023-12-13 17:30Z | — | 3 h |
| 2023-12-14 14:30Z | 2023-12-14 17:30Z | — | 3 h |
| 2023-12-15 14:30Z | 2023-12-15 17:30Z | — | 3 h |
| 2023-12-16 14:30Z | 2023-12-16 17:30Z | — | 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
- 2023-12-06 10:11Z
- status
- Archived notice
- self-cancels
- 2023-12-16 18:30Z
- authority
- RTS SAFETY KWAJALEIN MH 428/23 211909Z NOV 23.
- NAVAREA
- NAVAREA XII
- issued by
- RTS SAFETY KWAJALEIN MH
- sea
- North Pacific Ocean
- position
- 27.167, -159.147
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTH PACIFIC. 1. HAZARDOUS OPERATIONS 1430Z TO 1730Z DAILY 11 THRU 16 DEC IN AREAS BOUND BY: A. 24-40.00N 164-32.00W, 24-52.00N 164-43.00W, 24-38.00N 165-07.00W, 24-26.00N 164-57.00W. B. 27-13.00N 158-33.00W, 27-34.00N 158-49.00W, 27-07.00N 159-45.00W, 26-44.00N 159-30.00W. 2. CANCEL THIS MSG 161830Z DEC 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.
- 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
26 within 180 nm since 2000 · 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 251930Z to 260100Z oct, alternate 1930Z to 0100Z daily 26 thru 28 oct in area bound by…2023-10-20
- Hazardous operations 181930Z to 190045Z nov, alternate 1930Z to 0045Z daily 19 thru 22 nov in area bound by…2022-11-16
- Hazardous operations 171930Z to 180045Z nov, alternate 1930Z to 0045Z daily 18 thru 21 nov in area bound by…2022-11-16
- Hazardous operations 0130Z to 0700Z daily 18 thru 20 nov in area bound by 22-08.0N 162-50.0W, 22-06.0N…2022-11-12
- Hazardous operations 150130Z to 150700Z nov, alternate 0130Z to 0700Z daily 16 thru 20 nov in area bound by…2022-11-08
- Hazardous operations 092330Z to 100500Z aug, alternate 2330Z to 0500Z daily 10 thru 12 aug in area bound by…2022-08-05
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 15:21Z; 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.