Gunnery exercises 230600Z to 231600Z jan in area bound by 21-12.0S 054-57.0E, 21-19.5S 054-25.9E, 21-39.0S…
Indian Ocean · HYDROPAC 251/24
What this record establishes
Archived notice · 2024-01-23 17:00Z
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) · AVURNAV LA REUNION 0/24 200800Z JAN 24.. Issued 2024-01-20 08:08Z. 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
- Indian 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.
Related notices and cancellation links
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2024-01-23 06:00Z | 2024-01-23 16:00Z | — | 10 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2024-01-20 08:08Z
- status
- Archived notice
- self-cancels
- 2024-01-23 17:00Z
- authority
- AVURNAV LA REUNION 0/24 200800Z JAN 24.
- issued by
- AVURNAV LA REUNION
- sea
- Indian Ocean
- position
- -21.407, 54.732
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN INDIAN OCEAN. REUNION. DNC 02. 1. GUNNERY EXERCISES 230600Z TO 231600Z JAN IN AREA BOUND BY 21-12.0S 054-57.0E, 21-19.5S 054-25.9E, 21-39.0S 054-33.5E, 21-26.0S 055-02.5E. 2. CANCEL HYDROPAC 228/24. 3. CANCEL THIS MSG 231700Z JAN 24.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Gunnery and live firing
- Naval or coastal guns firing into a sea area for practice, at stated times.
- 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.
- 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.
Collected reports in this area · military exercises
263 within 180 nm since 1999 · 2 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 050600Z to 100001Z sep in area bound by 21-30.75S 055-05.27E, 21-07.73S 054-56.99E,…2026-09-04
- Hazardous operations 0230Z to 0700Z daily 14 thru 16 sep in area within two miles of 21-17.00S 055-20.81E2026-09-01
- Gunnery exercises 180200Z to 182000Z jun in area bound by 21-12.00S 054-57.00E, 21-26.00S 055-02.50E,…2025-06-16
- Gunnery exercises 170600Z to 171400Z jun and 190400Z to 191800Z in area bound by 21-12.00S 054-57.00E,…2025-06-13
- Gunnery exercises 0600Z to 1400Z daily 10 and 11 feb in area bound by 21-12.00S 054-57.00E, 21-19.50S…2025-02-07
- Gunnery exercises 230600Z to 231600Z jan in area bound by 21-12.00S 054-57.00E, 21-19.50S 054-25.90E,…2024-01-19
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
Worldwide in the collected sources
9 military exercises listed in force · see all
Record snapshot 2026-10-02 20:48Z; 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.