Underwater ordnance detonations 061600Z to 070500Z dec in areas bound by: a. 26-34N 150-10W, 25-00N 154-07W,…
North Pacific Ocean · NAVAREA XII 410/99
What this record establishes
Archived notice · 1999-12-07 06:00Z
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) · COMNAVSURFPAC SAN DIEGO 011335Z DEC 99. Issued 1999-12-02 18:35Z. 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 · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 1999-12-06 16:00Z | 1999-12-07 05:00Z | — | 13 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 1999-12-02 18:35Z
- status
- Archived notice
- self-cancels
- 1999-12-07 06:00Z
- authority
- COMNAVSURFPAC SAN DIEGO 011335Z DEC 99
- NAVAREA
- NAVAREA XII
- issued by
- COMNAVSURFPAC SAN DIEGO
- sea
- North Pacific Ocean
- position
- 24.725, -151.675
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER ORDNANCE DETONATIONS 061600Z TO 070500Z DEC IN AREAS BOUND BY: A. 26-34N 150-10W, 25-00N 154-07W, 25-44N 154-32W, 27-18N 150-30W. B. 25-54N 149-51W, 24-20N 153-50W, 23-35N 153-28W, 25-07N 149-30W. 2. CANCEL THIS MSG 070600Z DEC.
Reading this warning
- Unexploded ordnance
- Bombs, shells, mines or torpedoes found on the seabed or washed up, and the operations to remove or destroy them.
- 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.
- 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.
Collected reports in this area · ordnance operations
7 within 180 nm since 1999 · 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.
- Underwater ordnance detonations 062301Z to 121159Z sep in areas bound by: a. 29-32N 150-52W, 33-02N 146-30W,…2010-09-05
- Underwater ordnance detonations 232301Z to 281201Z jun in area bound by 24-54N 154-06W, 26-15N 150-05W,…2010-06-21
- Gunnery/bombing exercises 081500Z to 081900Z apr in area bound by 23-24.0N 153-57.0W, 24-25.0N 151-17.0W,…2010-04-04
- Underwater ordnance detonations: a. 282300Z to 290100Z may along trackline between 23-54-06N 151-59-28W and…2003-05-23
- Underwater ordnance detonations: a. 291900Z to 300100Z jun in area bound by 24-05N 152-30W, 25-00N 150-20W,…2000-06-28
- Underwater ordnance detonations 300001Z sep to 020001Z oct in areas bound by: a. 25-00N 154-20W, 25-00N…1999-09-29
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
0 ordnance operations listed in force · see all
Record snapshot 2026-09-24 17:26Z; source collection times vary.
Ordnance
Ordnance disposal, underwater detonations and unexploded ordnance. All current ordnance operations →
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.