Exercises

Hazardous operations 11 aug: a. 0540Z to 0940Z in area bound by 34-25-46N 127-31-13E, 34-16-47N 127-26-11E,…

Philippine Sea · HYDROPAC 1404/09

What this record establishes

Archived notice · 2009-08-09 06:51Z

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) · NAVAREA XI 488/09 07 AUG 09.. Issued 2009-08-07 13:43Z. 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: Philippine Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Original warning text

1. HAZARDOUS OPERATIONS 11 AUG:
   A. 0540Z TO 0940Z IN AREA BOUND BY
      34-25-46N 127-31-13E, 34-16-47N 127-26-11E,
      33-44-49N 127-32-59E, 33-47-05N 127-48-17E,
      34-19-03N 127-41-35E, 34-26-03N 127-33-09E.
   B. 0750Z TO 1010Z IN AREAS BOUND BY:
      1. 15-46-12N 129-12-05E, 15-59-38N 131-03-16E,
         12-24-26N 131-29-58E, 12-10-59N 129-40-30E.
      2. 11-42-28N 130-17-30E, 11-47-51N 131-01-11E,
         08-44-51N 131-24-04E, 08-39-28N 130-40-48E.
2. CANCEL HYDROPAC 671/09(74), OPERATIONS COMPLETED.
3. CANCEL THIS MSG 111110Z AUG.

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.
Cancellation reference: A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROPAC: The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
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.

All warning terms →

Collected reports in this area · military exercises

7 within 180 nm since 2006 · 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.

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

28 military exercises listed in force · see all

Record snapshot 2026-10-02 05:57Z; 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.

What this record establishes

Related notices and cancellation links

Original warning text

Reading this warning

Collected reports in this area · military exercises

Month of issue in the collected archive

Nearby notices listed in force · within 120 nm

Worldwide in the collected sources

Exercises