Other

Hazardous operation 201100Z to 202000Z and 211300Z to 212100Z jan in area within three miles of 05-04.99N…

North Atlantic Ocean · NAVAREA IV 43/21

What this record establishes

Archived notice · 2021-01-21 22:00Z

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) · AVURNAV CAYENNE 2/21 151058Z JAN 21.. Issued 2021-01-15 11:11Z. 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 parsed report position is 5.083, -52.002 with a 3.0 nm radius. It is a position in the source message, not a live location. 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)locallength
2021-01-20 11:00Z2021-01-20 20:00Z—9 h
2021-01-21 13:00Z2021-01-21 21:00Z—8 h

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

issued
2021-01-15 11:11Z
status
Archived notice
self-cancels
2021-01-21 22:00Z
authority
AVURNAV CAYENNE 2/21 151058Z JAN 21.
NAVAREA
NAVAREA IV
issued by
AVURNAV CAYENNE
sea
North Atlantic Ocean
position
5.083, -52.002 · r 3.0 nm
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH ATLANTIC.
FRENCH GUIANA.
1. HAZARDOUS OPERATION 201100Z TO 202000Z
   AND 211300Z TO 212100Z JAN IN AREA WITHIN
   THREE MILES OF 05-04.99N 052-00.10W.
2. CANCEL THIS MSG 212200Z JAN 21.

Reading this warning

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.
Within a radius of
A circular area — every position within a stated distance of a point.
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 · other warnings

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

99
00
05
10
15
20
22

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

23 other warnings listed in force · see all

Record snapshot 2026-10-02 02:09Z; source collection times vary.

Other

Everything the classifier did not place elsewhere. All current other warnings →

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.