Exercises

Hazardous operations 182300Z to 190130Z aug, alternate 192300Z to 200130Z aug in area bound by 33-11N…

Eastern North Pacific · California · NAVAREA XII 370/20

issued: 2020-08-15 13:23Z
status: cancelled 2020-08-17 17:13Z (archive)
self-cancels: 2020-08-20 02:30Z
authority: SEA RANGE OTC 122123Z AUG 20.
sea: North Pacific Ocean
position: 33.072, -120.641
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

EASTERN NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS 182300Z TO 190130Z AUG,
   ALTERNATE 192300Z TO 200130Z AUG
   IN AREA BOUND BY
   33-11N 121-13W, 33-30N 120-00W,
   33-19N 120-06W, 32-36N 120-37W,
   32-51N 121-04W.
2. CANCEL THIS MSG 200230Z AUG 20.

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
2020-08-18 23:00Z	2020-08-19 01:30Z	—	2 h 30
2020-08-19 23:00Z	2020-08-20 01:30Z	—	2 h 30

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

1137 within 180 nm since 1999 · 8 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 370/20 and this msg, operations canceledcancelled by · 2020-08-17

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 · 71.4 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 · 90.5 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 · 114.6 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.