Exercises

Hazardous operations

North Atlantic Ocean · NAVAREA IV 251/10

What this record establishes

Archived notice · 2010-06-09 22:48Z

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 0610 041035Z JUN 10.. Issued 2010-06-06 18:25Z. 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
2010-06-08 00:01Z2010-06-13 06:00Z—125 h 59

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

issued
2010-06-06 18:25Z
status
Archived notice
self-cancels
2010-06-13 07:00Z
authority
EASTERN RANGE OP 0610 041035Z JUN 10.
NAVAREA
NAVAREA IV
issued by
EASTERN RANGE OP
sea
North Atlantic Ocean
position
15.450, -41.548
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 080001Z TO 130600Z JUN
   IN AREAS BOUND BY:
   A. 29-03N 076-24W, 28-38N 076-24W,
      28-31N 075-30W, 29-03N 075-30W.
   B. 28-23N 073-11W, 27-52N 073-18W,
      27-39N 072-19W, 27-33N 071-16W,
      27-53N 071-11W, 28-11N 072-15W.
   C. 26-48N 067-07W, 26-04N 067-20W,
      24-49N 063-43W, 25-42N 063-26W,
      26-24N 065-30W.
   D. 17-22N 043-51W, 16-10N 044-32W,
      13-14N 039-26W, 14-44N 038-34W,
      16-25N 041-29W.
2. CANCEL THIS MSG 130700Z JUN.

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

20 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.