Hazardous operations
North Atlantic Ocean · NAVAREA IV 1051/16
What this record establishes
Archived notice · 2016-12-13 23:34Z
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) · EASTERN RANGE 122037Z DEC 16.. Issued 2016-12-12 20:41Z. 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
- North Atlantic 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
- Hazardous operationscancelled by this notice
- Hazardous operationslater cancellation notice
Current notices and reporting history in the North Atlantic Ocean →
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2016-12-14 13:20Z | 2016-12-14 15:48Z | — | 2 h 28 |
| 2016-12-15 13:20Z | 2016-12-15 15:48Z | — | 2 h 28 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2016-12-12 20:41Z
- status
- Archived notice
- self-cancels
- 2016-12-15 16:48Z
- authority
- EASTERN RANGE 122037Z DEC 16.
- NAVAREA
- NAVAREA IV
- issued by
- EASTERN RANGE
- sea
- North Atlantic Ocean
- position
- 6.375, -39.177
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN NORTH ATLANTIC.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 141320Z TO 141548Z DEC,
ALTERNATE 151320Z TO 151548Z DEC IN AREAS BOUND BY:
A. 28-49N 078-39W, 29-09N 078-39W,
29-19N 078-29W, 28-50N 077-09W,
28-19N 076-09W, 28-09N 076-19W,
28-39N 078-09W.
B. 27-40N 071-28W, 26-54N 072-43W,
25-25N 072-36W, 24-49N 071-10W,
25-36N 069-47W, 27-04N 069-55W.
C. 23-18N 064-43W, 24-08N 063-28W,
23-08N 061-31W, 21-37N 061-37W,
21-27N 063-52W, 22-11N 064-51W.
D. 10-38N 044-27W, 11-27N 043-24W,
09-51N 039-31W, 04-48N 034-30W,
01-20N 033-22W, 01-07N 035-06W,
02-59N 039-15W, 07-57N 043-42W.
2. CANCEL NAVAREA IV 1049/16.
3. CANCEL THIS MSG 151648Z DEC 16.
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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- NAVAREA
- One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.
- 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
12 within 180 nm since 2000 · 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 1638Z to 1742Z daily 06 thru 31 mar in area bound by 05-29N 050-14W, 05-29N 049-36W,…2018-03-01
- Hazardous operations 0003Z to 0207Z daily 28 jan thru 27 feb in areas bound by: a. 05-03N 049-32W, 05-05N…2017-01-27
- Hazardous operations2016-12-13
- Hazardous operations2016-12-12
- Hazardous operations2016-12-07
- Hazardous operations 252009Z to 252155Z jan, alternate 262009Z to 262155Z jan in areas bound by: a. 29-12N…2003-01-21
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
9 military exercises listed in force · see all
Record snapshot 2026-10-03 18:42Z; 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.