Exercises

Hazardous operations 131630Z to 132359Z dec, alternate 1630Z to 2359Z daily 14 and 15 dec in area bound by…

Eastern North Pacific · California · NAVAREA XII 850/23

issued: 2023-12-08 00:16Z
status: cancelled 2023-12-16 00:59Z (archive)
self-cancels: 2023-12-16 00:59Z
authority: SEA RANGE OTC 0/23 072054Z DEC 23.
sea: North Pacific Ocean
position: 33.102, -120.233
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

EASTERN NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS 131630Z TO 132359Z DEC,
   ALTERNATE 1630Z TO 2359Z DAILY 14 AND 15 DEC
   IN AREA BOUND BY
   32-32.00N 120-20.00W, 33-01.00N 119-40.00W,
   33-38.00N 120-05.00W, 33-28.00N 120-35.00W,
   32-56.00N 120-42.00W.
2. CANCEL THIS MSG 160059Z DEC 23.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2023-12-13 16:30Z	2023-12-13 23:59Z	—	7 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

1123 within 180 nm since 1999 · 5 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 848/23, 850/23 and this msgcancelled by · 2023-12-15

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 · 54.6 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 · 70.5 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 · 94.6 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.