Exercises

Hazardous operations

North Atlantic Ocean · NAVAREA IV 472/10

What this record establishes

Archived notice · 2010-11-23 04:41Z

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 D5949 192146Z NOV 10.. Issued 2010-11-19 22:05Z. 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.

Current notices and reporting history in the North Atlantic Ocean →

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
2010-11-21 22:58Z	2010-11-22 03:45Z	—	4 h 47
2010-11-22 22:54Z	2010-11-23 03:41Z	—	4 h 47

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

issued: 2010-11-19 22:05Z
status: Archived notice
self-cancels: 2010-11-23 04:41Z
authority: EASTERN RANGE OP D5949 192146Z NOV 10.
NAVAREA: NAVAREA IV
issued by: EASTERN RANGE OP
sea: North Atlantic Ocean
position: 20.967, -43.968
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 212258Z TO 220345Z NOV,
   ALTERNATE 222254Z TO 230341Z NOV
   IN AREAS BOUND BY:
   A. 28-34N 080-34W, 28-34N 080-33W,
      28-35N 080-22W, 28-34N 080-07W,
      28-28N 079-29W, 28-25N 079-29W,
      28-24N 079-50W, 28-25N 080-23W,
      28-25N 080-32W.
   B. 28-27N 072-30W, 28-13N 070-02W,
      26-40N 070-09W, 26-53N 072-36W.
   C. 23-01N 048-47W, 23-07N 046-31W,
      22-31N 044-21W, 20-14N 039-31W,
      19-15N 039-52W, 20-18N 045-37W,
      21-38N 048-07W, 22-39N 048-57W.
2. CANCL NAVAREA IV 470/10.
3. CANCEL THIS MSG 230441Z NOV.

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.
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.

All warning terms →

Collected reports in this area · military exercises

6 within 180 nm since 2009 · 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.

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 21:43Z; 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.