Other

Hydrographic operations 012100Z to 030400Z apr in areas bound by: a. 25-30N 153-30W, 27-20N 150-20W, 29-56N…

NAVAREA XII 93/99

issued
1999-03-26 09:55Z
status
cancelled 1999-04-03 00:00Z (archive)
self-cancels
1999-04-03 05:00Z
sea
North Pacific Ocean
position
27.917, -145.804
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROGRAPHIC OPERATIONS 012100Z TO 030400Z APR
   IN AREAS BOUND BY:
   A. 25-30N 153-30W, 27-20N 150-20W, 29-56N 145-20W,
      32-16N 140-15W, 33-50N 136-25W, 34-45N 136-55W,
      26-30N 154-00W.
   B. 24-42N 153-04W, 26-40N 149-40W, 29-10N 144-47W,
      31-30N 139-45W, 33-05N 135-55W, 32-20N 135-25W,
      24-00N 152-20W.
2. CANCEL THIS MSG 030500Z APR.

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
1999-04-01 21:00Z1999-04-03 04:00Z31 h

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

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

99
00
05
10
15
19

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.