Hazardous operations 251200Z to 252000Z aug in area bound by 13-16.00N 059-43.25W, 13-18.00N 059-43.05W,…
Caribbean Sea · NAVAREA IV 686/18
What this record establishes
Archived notice · 2018-08-25 21:00Z
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) · BARBADOS 221533Z AUG 18.. Issued 2018-08-22 17:01Z. 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
- Caribbean 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 Caribbean Sea →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2018-08-25 12:00Z | 2018-08-25 20:00Z | — | 8 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2018-08-22 17:01Z
- status
- Archived notice
- self-cancels
- 2018-08-25 21:00Z
- authority
- BARBADOS 221533Z AUG 18.
- NAVAREA
- NAVAREA IV
- issued by
- BARBADOS
- sea
- Caribbean Sea
- position
- 13.284, -59.729
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN CARIBBEAN SEA. BARBADOS. 1. HAZARDOUS OPERATIONS 251200Z TO 252000Z AUG IN AREA BOUND BY 13-16.00N 059-43.25W, 13-18.00N 059-43.05W, 13-18.00N 059-44.38W, 13-16.00N 059-44.38W. 2. CANCEL THIS MSG 252100Z AUG 18.
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.
- 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.
Collected reports in this area · military exercises
112 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 301400Z to 301600Z aug in area within 12 miles of 14-34.99N 061-47.36W2023-08-30
- Gunnery exercises 301200Z to 301600Z aug in area within 12 miles of 14-35.00N 061-47.36W2023-08-28
- Gunnery exercises 311600Z to 312000Z aug in area within 12 miles of 14-35.00N 061-47.36W2023-08-27
- Gunnery exercise 021200Z to 021700Z jul in area within 12 miles of 14-35.00N 061-47.36W2023-06-29
- Gunnery exercise 301100Z to 301500Z jun in area within 12 miles of 14-34.99N 061-47.36W2023-06-29
- Gunnery exercises 121700Z to 122200Z mar in area within 12 miles of 14-34.99N 061-47.36W2023-03-07
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
- GrenadinesWrecks · 106.5 nm
- Carenage range rear light 14-36.32N 061-03.74W changed to oc (2) g 50 meters 9 milesNav aids · 111 nm
Worldwide in the collected sources
31 military exercises listed in force · see all
Record snapshot 2026-09-29 19:40Z; 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.