Missiles

Hazardous operations, rocket launching 102300Z to 110442Z dec, alternate 112300Z to 120442Z and 122300Z to…

North Atlantic Ocean · HYDROLANT 3793/20

What this record establishes

Archived notice · 2020-12-11 02:16Z

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 021832Z DEC 20.. Issued 2020-12-06 05:44Z. 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 · 3 in this warning

opens (UTC)closes (UTC)locallength
2020-12-10 23:00Z2020-12-11 04:42Z—5 h 42
2020-12-11 23:00Z2020-12-12 04:42Z—5 h 42
2020-12-12 23:00Z2020-12-13 04:42Z—5 h 42

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

issued
2020-12-06 05:44Z
status
Archived notice
self-cancels
2020-12-13 05:42Z
authority
EASTERN RANGE 021832Z DEC 20.
issued by
EASTERN RANGE
sea
North Atlantic Ocean
position
20.449, -38.847
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN NORTH ATLANTIC.
DNC 01.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
   102300Z TO 110442Z DEC, ALTERNATE
   112300Z TO 120442Z AND 122300Z TO 130442Z DEC
   IN AREA BOUND BY
   21-15N 045-22W, 23-51N 044-36W,
   19-32N 032-09W, 17-06N 033-09W.
2. CANCEL THIS MSG 130542Z DEC 20.

Reading this warning

DNC (Digital Nautical Chart)
A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
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.
Rocket launching
The areas where spent rocket stages, boosters and fairings are expected to fall after a launch, with the launch window.
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 · missile & rocket hazards

9 within 180 nm since 2016 · 0 in the last 12 months · 0 listed in force now

16
20
23

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

4 missile & rocket hazards listed in force · see all

Record snapshot 2026-10-02 04:20Z; source collection times vary.

Missiles

Missile firings, rocket launches and space debris re-entry areas. All current missile & rocket hazards →

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.