Exercises

Hazardous operations

North Atlantic Ocean · NAVAREA IV 192/16

What this record establishes

Archived notice · 2016-03-13 22:10Z

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 OP 0314 121852Z MAR 16.. Issued 2016-03-12 19:16Z. 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

Current notices and reporting history in the North Atlantic Ocean →

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2016-03-18 18:40Z2016-03-19 01:47Z—7 h 07

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued
2016-03-12 19:16Z
status
Archived notice
self-cancels
2016-03-19 02:47Z
authority
EASTERN RANGE OP 0314 121852Z MAR 16.
NAVAREA
NAVAREA IV
issued by
EASTERN RANGE OP
sea
North Atlantic Ocean
position
15.425, -41.128
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 1840Z TO 0147Z
   COMMENCING DAILY 14 AND 16 MAR,
   ALTERNATE 181840Z TO 190147Z MAR
   IN AREAS BOUND BY:
   A. 29-07N 076-24W, 28-56N 075-13W,
      28-51N 074-52W, 28-21N 074-52W,
      28-37N 076-24W.
   B. 28-13N 073-10W, 27-59N 072-00W,
      27-48N 071-17W, 27-40N 071-19W,
      27-47N 072-09W, 28-03N 073-14W.
   C. 26-31N 067-21W, 26-34N 066-39W,
      26-09N 065-21W, 25-26N 063-55W,
      25-14N 064-00W, 25-53N 065-43W,
      26-17N 067-26W.
   D. 16-52N 043-45W, 16-49N 043-23W,
      16-13N 041-27W, 14-38N 038-42W,
      14-06N 039-01W, 14-24N 040-20W,
      16-26N 044-00W.
2. CANCEL THIS MSG 190247Z MAR 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.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · military exercises

16 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
00
05
10
15
20
21

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

J
F
M
A
M
J
J
A
S
O
N
D

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 23:31Z; 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.