Exercises

Hazardous operations 2148Z to 0043Z daily 28 apr thru 28 may in areas bound by: a. 02-02N 025-49W, 01-38N…

HYDROLANT 823/99

issued
1999-04-26 06:30Z
status
cancelled 1999-04-28 00:00Z (archive)
self-cancels
1999-04-28 01:43Z
sea
North Atlantic Ocean
position
4.350, -42.800
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 2148Z TO 0043Z DAILY 28 APR
   THRU 28 MAY IN AREAS BOUND BY:
   A. 02-02N 025-49W, 01-38N 025-53W, 02-18N 030-26W.
   B. 05-01N 046-06W, 04-40N 046-08W, 04-49N 047-53W,
      05-10N 047-52W.
   C. 04-22N 041-33W, 04-03N 041-35W, 04-20N 044-03W,
      04-38N 044-01W.
2. CANCEL THIS MSG 280143Z APR.

Activity windows · 31 in this warning

opens (UTC)closes (UTC)locallength
1999-04-28 21:48Z1999-04-29 00:43Z—2 h 55
1999-04-29 21:48Z1999-04-30 00:43Z—2 h 55
1999-04-30 21:48Z1999-05-01 00:43Z—2 h 55
1999-05-01 21:48Z1999-05-02 00:43Z—2 h 55
1999-05-02 21:48Z1999-05-03 00:43Z—2 h 55
1999-05-03 21:48Z1999-05-04 00:43Z—2 h 55
1999-05-04 21:48Z1999-05-05 00:43Z—2 h 55
1999-05-05 21:48Z1999-05-06 00:43Z—2 h 55
… 23 more

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

This area · military exercises

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

99
00
05
10
15
18

Season · when military exercises happen here

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

month of issue, all years in the archive

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

35 military exercises in force · see all

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.