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Underwater ordnance detonations 0330Z to 0430Z daily 01 thru 03 aug within ten miles of 34-05N 140-34E

Western North Pacific · Ordnance · HYDROPAC 1521/10

issued: 2010-07-27 00:05Z
status: cancelled 2010-08-02 01:44Z (archive)
self-cancels: 2010-08-03 05:30Z
authority: COMNAVFORJAPAN 262340Z JUL 10.
position: 34.083, 140.567 · r 10.0 nm
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
ORDNANCE.
1. UNDERWATER ORDNANCE DETONATIONS 0330Z TO 0430Z DAILY
   01 THRU 03 AUG WITHIN TEN MILES OF 34-05N 140-34E.
2. CANCEL THIS MSG 030530Z AUG.

This area · other warnings

2 within 180 nm since 2010 · 0 in the last 12 months · 0 in force now

Underwater ordnance detonations 2300Z to 0800Z commencing daily 15 and 16 jul in areas bound by: a.…2010-07-14

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Timeline

Cancel HYDROPAC 1521/10 and this msg, operations completedcancelled by · 2010-08-02

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

68 other warnings in force · see all

Other

Everything the classifier did not place elsewhere. All current other warnings →

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.