Exercises

Hazardous operations 301500Z to 302359Z nov, alternate 010001Z to 010100Z dec, 1500Z to 0100Z daily 01 thru…

Eastern North Pacific · California · NAVAREA XII 672/21

issued: 2021-11-26 08:14Z
status: cancelled 2021-12-05 02:00Z (archive)
self-cancels: 2021-12-05 02:00Z
authority: SEA RANGE OTC 240016Z NOV 21.
sea: North Pacific Ocean
position: 33.360, -120.639
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

EASTERN NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS 301500Z TO 302359Z NOV,
   ALTERNATE 010001Z TO 010100Z DEC,
   1500Z TO 0100Z DAILY 01 THRU 04 DEC
   IN AREA BOUND BY
   33-04N 120-52W, 33-06N 120-11W,
   33-15N 120-27W, 33-20N 120-45W,
   33-30N 120-00W, 33-30N 120-02W,
   33-30N 120-20W, 33-43N 120-54W,
   33-44N 120-56W.
2. CANCEL THIS MSG 050200Z DEC 21.

Activity windows · 6 in this warning

opens (UTC)	closes (UTC)	local	length
2021-11-30 15:00Z	2021-11-30 23:59Z	—	8 h 59
2021-12-01 00:01Z	2021-12-01 01:00Z	—	59 min
2021-12-01 15:00Z	2021-12-02 01:00Z	—	10 h
2021-12-02 15:00Z	2021-12-03 01:00Z	—	10 h
2021-12-03 15:00Z	2021-12-04 01:00Z	—	10 h
2021-12-04 15:00Z	2021-12-05 01:00Z	—	10 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 · military exercises

1132 within 180 nm since 1999 · 5 in the last 12 months · 4 in force now

Season · when military exercises happen here

month of issue, all years in the archive

Nearby now · within 120 nm

Hazardous operations 181700Z to 190001Z aug, alternate 1700Z to 0100Z daily, 20 thru 21 aug in area bound by…Exercises · 62.8 nm
Hazardous operations 010800Z aug to 010800Z sep in area bound by 32-52.70N 119-11.96W, 33-08.06N 118-52.09W,…Exercises · 94.3 nm
Hazardous operations 010800Z aug to 010800Z sep in area bound by 32-55.00N 118-25.00W, 32-55.00N 118-15.00W,…Exercises · 118.2 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.