Other
Hydrographic operations 271001Z to 291600Z apr in areas bound by: a. 25-00N 154-10W, 26-33N 150-08W, 28-18N…
NAVAREA XII 121/99
- issued
- 1999-04-22 20:01Z
- status
- cancelled 1999-04-29 00:00Z (archive)
- self-cancels
- 1999-04-29 17:00Z
- sea
- North Pacific Ocean
- position
- 24.858, -145.281
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. HYDROGRAPHIC OPERATIONS 271001Z TO 291600Z APR IN
AREAS BOUND BY:
A. 25-00N 154-10W, 26-33N 150-08W, 28-18N 145-09W,
29-20N 141-48W, 30-15N 142-10W, 25-55N 154-40W.
B. 22-54N 154-00W, 24-36N 150-08W, 26-27N 145-09W,
28-10N 140-09W, 28-40N 141-32W, 27-39N 144-52W,
25-53N 149-51W, 24-20N 153-51W.
C. 22-11N 153-50W, 23-55N 149-51W, 25-48N 144-51W,
27-30N 139-52W, 28-39N 135-42W, 27-40N 135-20W,
21-15N 153-20W.
2. CANCEL THIS MSG 291700Z APR.Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 1999-04-27 10:01Z | 1999-04-29 16:00Z | — | 53 h 59 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · other warnings
8 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
99
00
05
10
15
18
- The ocean cleanup system operations in progress until further notice by a 600 meter barrier marked with red…2018-12-29
- The ocean cleanup system operations in progress until further notice by a 600 meter barrier marked with red…2018-12-28
- The ocean cleanup system operations in progress until further notice by a 600 meter barrier marked with red…2018-12-27
- Pyrotechnics exercises 250300Z to 250600Z sep vicinity 26-11N 145-11W2000-09-20
- Underwater ordnance detonations: a. 141800Z to 150200Z dec vicinity 23-30N 152-25W1999-12-11
- Underwater ordnance detonations 061001Z to 080030Z oct in areas bound by: a. 25-56N 154-27W, 25-00N 154-05W,…1999-10-04
Season · when other warnings 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
34 other warnings in force · see all
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.