Exercises

Hazardous operations 071600Z to 080001Z dec, alternate 1600Z to 0001Z daily 09 thru 12 dec in area bound by…

Eastern North Pacific · California · NAVAREA XII 683/21

issued: 2021-12-03 18:03Z
status: cancelled 2021-12-07 23:55Z (archive)
self-cancels: 2021-12-13 01:00Z
authority: SEA RANGE OTC 031558Z DEC 21.
sea: North Pacific Ocean
position: 33.258, -119.551
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

EASTERN NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS 071600Z TO 080001Z DEC,
   ALTERNATE 1600Z TO 0001Z DAILY 09 THRU 12 DEC
   IN AREA BOUND BY
   33-19N 119-37W, 33-20N 119-31W,
   33-18N 119-27W, 33-16N 119-29W,
   33-13N 119-30W, 33-10N 119-30W,
   33-10N 119-31W, 33-12N 119-36W,
   33-14N 119-38W, 33-17N 119-38W.
2. CANCEL THIS MSG 130100Z DEC 21.

Activity windows · 5 in this warning

opens (UTC)	closes (UTC)	local	length
2021-12-07 16:00Z	2021-12-08 00:01Z	—	8 h 01
2021-12-09 16:00Z	2021-12-10 00:01Z	—	8 h 01
2021-12-10 16:00Z	2021-12-11 00:01Z	—	8 h 01
2021-12-11 16:00Z	2021-12-12 00:01Z	—	8 h 01
2021-12-12 16:00Z	2021-12-13 00:01Z	—	8 h 01

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

1090 within 180 nm since 1999 · 6 in the last 12 months · 5 in force now

Season · when military exercises happen here

month of issue, all years in the archive

Timeline

Cancel NAVAREA XII 681/21, 683/21 and this msg, operations completedcancelled by · 2021-12-07

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 · 30.3 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 · 42.2 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 · 65 nm
Hazardous operations 010800Z aug to 010800Z sep in area bound by 32-33.00N 118-25.00W, 32-35.00N 118-16.00W,…Exercises · 97.5 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.