Exercises

Hazardous operations 031830Z to 032359Z oct in areas bound by: a. 34-23N 120-37W, 34-23N 120-43W, 34-38N…

NAVAREA XII 284/01

issued: 2001-10-01 23:20Z
status: cancelled 2001-10-03 01:13Z (archive)
self-cancels: 2001-10-04 00:59Z
cancels: NAVAREA XII 281/01
authority: VAFB OP# W6331 PHONECON 012315Z OCT 01
sea: North Pacific Ocean
position: 8.783, -126.266
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 031830Z TO 032359Z OCT IN AREAS
   BOUND BY:
   A. 34-23N 120-37W, 34-23N 120-43W, 34-38N 120-40W, 34-37N 120-34W.
   B. 30-48N 121-43W, 31-41N 121-30W, 31-37N 121-02W, 30-43N 121-15W.
   C. 29-25N 122-03W, 30-05N 121-53W, 30-01N 121-31W, 29-21N 121-40W.
   D. 26-40N 122-43W, 28-20N 122-20W, 28-14N 121-50W, 26-34N 122-12W.
   E. 07-12N 126-52W, 10-27N 126-12W, 10-22N 125-40W, 07-06N 126-20W.
2. CANCEL NAVAREA XII 281/01.
3. CANCEL THIS MSG 040059Z OCT.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2001-10-03 18:30Z	2001-10-03 23:59Z	—	5 h 29

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

17 within 180 nm since 2001 · 0 in the last 12 months · 0 in force now

Hazardous operations2016-11-06
Hazardous operations2016-11-01
Hazardous operations2016-09-16
Hazardous operations2016-09-11
Hazardous operations 1542Z to 1722Z daily 18 thru 21 oct in areas bound by: a. 34-26N 120-36W, 34-27N…2009-10-13
Hazardous operations 1954Z to 2152Z daily 05 thru 08 may in areas bound by: a. 34-27N 120-40W, 34-29N…2009-05-01

Season · when military exercises happen here

month of issue, all years in the archive

Timeline

Hazardous operations 1830Z to 2359Z daily 02 and 03 oct in areas bound by: a. 34-23N 120-37W, 34-23N…cancels · 2001-10-01
Hazardous operations 1830Z to 2359Z daily 02 and 03 oct in areas bound by: a. 34-23N 120-37W, 34-23N…replaced · 2001-10-01
Hazardous operations 041830Z to 042359Z oct in areas bound by: a. 34-23N 120-37W, 34-23N 120-43W, 34-38N…cancelled by · 2001-10-03

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.