Ordnance

Underwater ordnance detonations in progress until 281159Z oct in areas bound by: a. 22-05N 162-00W, 22-05N…

North Pacific Ocean · NAVAREA XII 430/10

What this record establishes

Archived notice · 2010-10-28 12:59Z

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) · CTG 34.4 151753Z OCT 10.. Issued 2010-10-22 14:14Z. 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 →

issued: 2010-10-22 14:14Z
status: Archived notice
self-cancels: 2010-10-28 12:59Z
authority: CTG 34.4 151753Z OCT 10.
NAVAREA: NAVAREA XII
issued by: CTG
sea: North Pacific Ocean
position: 21.700, -166.005
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

NORTH PACIFIC.
HAWAII.
ORDNANCE.
1. UNDERWATER ORDNANCE DETONATIONS IN PROGRESS
   UNTIL 281159Z OCT IN AREAS BOUND BY:
   A. 22-05N 162-00W, 22-05N 165-00W,
      21-55N 170-01W, 21-20N 170-00W,
      21-29N 164-59W, 21-29N 162-00W.
   B. 20-58N 162-00W, 20-56N 164-58W,
      20-48N 170-00W, 20-14N 169-58W,
      20-22N 164-57W, 20-25N 162-00W.
2. CANCEL THIS MSG 281259Z OCT.

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.

All warning terms →

Collected reports in this area · ordnance operations

2 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 051505Z to 061930Z nov in area bound by 23-04N 170-37W, 19-55N 162-36W,…1999-11-02

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 2026-10-03 23:56Z; 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.