Hazardous operations 20 thru 22 aug in area bound by 25-51N 131-41E, 25-28N 132-46E, 23-48N 133-25E, 23-40N…
Philippine Sea · HYDROPAC 801/99
What this record establishes
Archived notice · 1999-08-23 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) · COMNAVFOR JAPAN YOKOSUKA 090203Z AUG 99.. Issued 1999-08-16 07:05Z. 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.
Current notices and reporting history in the Philippine Sea →
- issued
- 1999-08-16 07:05Z
- status
- Archived notice
- authority
- COMNAVFOR JAPAN YOKOSUKA 090203Z AUG 99.
- issued by
- COMNAVFOR JAPAN YOKOSUKA
- sea
- Philippine Sea
- position
- 24.590, 131.938
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS 20 THRU 22 AUG IN AREA BOUND BY 25-51N 131-41E, 25-28N 132-46E, 23-48N 133-25E, 23-40N 131-13E, 24-17N 130-21E. 2. CANCEL THIS MSG 23 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · military exercises
13 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.
- Hazardous operations 220001Z to 240100Z sep in area bound by 27-06N 129-15E, 27-06N 131-00E, 26-10N 131-00E,…2009-09-20
- Hazardous operations 220001Z to 260001Z sep in area bound by 27-06N 129-15E, 27-06N 131-00E, 26-10N 131-00E,…2009-09-18
- Gunnery exercises 132200Z to 140800Z dec in area bound by 26-04N 135-37E, 23-43N 134-34E, 23-46N 134-15E,…2008-12-10
- Hazardous operations 270100Z to 271000Z mar in areas bound by: a. 25-26.0N 131-42.0E, 25-13.0N 132-31.0E,…2008-03-24
- Hazardous operations 220100Z to 221000Z and 240100Z to 241000Z mar in areas bound by: a. 25-26.0N 131-42.0E,…2008-03-17
- Hazardous operations 060200Z to 060800Z and 070200Z to 070800Z nov within 80 miles of 24-28N 131-11E2007-11-05
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 06:13Z; 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.