Hazardous operations
North Pacific Ocean · HYDROPAC 258/10
What this record establishes
Archived notice · 2010-02-13 07:30Z
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) · COMCOGARD SECTOR GUAM 27/10 092022Z FEB 10.. Issued 2010-02-10 12:42Z. 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 parsed report position is 16.017, 146.067 with a 10.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROPAC 258/10 and this msglater cancellation notice
Current notices and reporting history in the North Pacific Ocean →
- issued
- 2010-02-10 12:42Z
- status
- Archived notice
- self-cancels
- 2010-02-13 07:30Z
- authority
- COMCOGARD SECTOR GUAM 27/10 092022Z FEB 10.
- issued by
- COMCOGARD SECTOR GUAM
- sea
- North Pacific Ocean
- position
- 16.017, 146.067 · r 10.0 nm
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTH PACIFIC. MARIANA ISLANDS. HAZARDOUS OPERATIONS. 1. HAZARDOUS OPERATIONS 2330Z TO 0630Z COMMENCING DAILY UNTIL 12 FEB WITHIN TEN MILES OF 16-01N 146-04E. 2. CANCEL THIS MSG 130730Z FEB.
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.
- Within a radius of
- A circular area — every position within a stated distance of a point.
- 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
1500 within 180 nm since 2002 · 47 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 0100Z to 1300Z daily 06 thru 08 oct in areas within three miles of: a. 13-27.00N…2026-09-30
- Hazardous operations 0100Z to 1300Z daily 28 thru 30 sep and 01 oct in areas within three miles of: a.…2026-09-23
- Hazardous operations 2200Z to 0700Z daily 28 and 29 sep in 13-29.05N 144-40.05E2026-09-16
- Hazardous operations 210300Z to 210500Z and 250100Z to 250300Z sep in area bound by 13-24.75N 144-38.30E,…2026-09-16
- Hazardous operations 0100Z to 1300Z daily 22 thru 24 sep in areas within three miles of: a. 13-27.00N…2026-09-16
- Hazardous operations2026-09-15
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
Worldwide in the collected sources
9 military exercises listed in force · see all
Record snapshot 2026-10-03 16:59Z; 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.