Exercises

Hazardous operations

Eastern North Pacific · NAVAREA XII 91/12

issued: 2012-04-02 17:35Z
status: cancelled 2012-04-04 08:18Z (archive)
self-cancels: 2012-04-07 01:16Z
cancels: NAVAREA XII 81/12
authority: WESTERN RANGE OP W3953 PT2 021544Z APR 12.
sea: North Pacific Ocean
position: 27.783, -126.960
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

EASTERN NORTH PACIFIC.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 2242Z TO 0016Z COMMENCING
   DAILY 03 THRU 06 APR IN AREAS BOUND BY:
   A. 34-26N 120-42W, 34-30N 120-47W,
      34-37N 120-40W, 34-33N 120-35W.
   B. 33-37N 121-05W, 34-01N 121-40W,
      34-39N 121-02W, 34-15N 120-27W.
   C. 26-48N 127-05W, 27-26N 128-00W,
      28-47N 126-50W, 28-08N 125-55W.
   D. 16-02N 136-14W, 16-22N 136-43W,
      18-39N 135-02W, 18-19N 134-33W.
2. CANCEL NAVAREA XII 81/12.
3. CANCEL THIS MSG 070116Z APR.

Activity windows · 4 in this warning

opens (UTC)	closes (UTC)	local	length
2012-04-03 22:42Z	2012-04-04 00:16Z	—	1 h 34
2012-04-04 22:42Z	2012-04-05 00:16Z	—	1 h 34
2012-04-05 22:42Z	2012-04-06 00:16Z	—	1 h 34
2012-04-06 22:42Z	2012-04-07 00:16Z	—	1 h 34

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

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

Hazardous operations2013-03-20
Hazardous operations2012-03-29
Hazardous operations2012-03-25
Hazardous operations2012-03-12
Hazardous operations 0001Z to 0700Z daily 14 thru 16 oct in areas bound by: a. 30-33N 128-10W, 29-36N…2009-10-14
Hazardous operations 1400Z to 2200Z daily 14, 16 and 17 apr in areas bound by: a. 30-33N 128-10W, 29-36N…2009-04-10

Season · when military exercises happen here

month of issue, all years in the archive

Timeline

Hazardous operationscancels · 2012-03-29
Hazardous operationsreplaced · 2012-03-29
Hazardous operationscancelled by · 2012-04-04

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.