Exercises
Hazardous operations 031359Z to 031608Z apr, alternate 041359Z to 041608Z apr in areas bound by: a.…
Eastern North Pacific · California · NAVAREA XII 171/23
- issued
- 2023-03-31 13:35Z
- status
- cancelled 2023-03-31 18:58Z (archive)
- self-cancels
- 2023-04-04 17:08Z
- cancels
- NAVAREA XII 169/23
- authority
- WESTERN RANGE 0/23 311301Z MAR 23.
- sea
- North Pacific Ocean
- position
- 31.067, -119.966
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS 031359Z TO 031608Z APR,
ALTERNATE 041359Z TO 041608Z APR IN AREAS BOUND BY:
A. 34-42.00N 120-40.00W, 34-34.00N 120-20.00W,
34-22.00N 120-19.00W, 33-44.00N 120-21.00W,
33-45.00N 120-28.00W, 34-26.00N 120-42.00W.
B. 31-33.00N 120-04.00W, 31-33.00N 120-01.00W,
30-35.00N 119-39.00W, 30-00.00N 119-31.00W,
29-56.00N 120-03.00W, 30-32.00N 120-08.00W.
2. CANCEL NAVAREA XII 169/23.
3. CANCEL THIS MSG 041708Z APR 23.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-04-03 13:59Z | 2023-04-03 16:08Z | — | 2 h 09 |
| 2023-04-04 13:59Z | 2023-04-04 16:08Z | — | 2 h 09 |
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
1058 within 180 nm since 1999 · 5 in the last 12 months · 5 in force now
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- Hazardous operations 181700Z to 190001Z aug, alternate 1700Z to 0100Z daily, 20 thru 21 aug in area bound by…2026-08-13
- Hazardous operations 191500Z to 202300Z aug in area within two miles of 32-35.87N 117-10.87W2026-08-12
- Hazardous operations 010800Z aug to 010800Z sep in area bound by 32-55.00N 118-25.00W, 32-55.00N 118-15.00W,…2026-07-23
- Hazardous operations 010800Z aug to 010800Z sep in area bound by 32-52.70N 119-11.96W, 33-08.06N 118-52.09W,…2026-07-23
- Hazardous operations 010800Z aug to 010800Z sep in area bound by 32-33.00N 118-25.00W, 32-35.00N 118-16.00W,…2026-07-23
- Hazardous operations 091900Z to 092200Z may in area bound by 33-53.45N 120-27.05W, 33-43.15N 119-46.30W,…2024-05-04
Season · when military exercises happen here
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F
M
A
M
J
J
A
S
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N
D
month of issue, all years in the archive
Timeline
- Hazardous operations 311359Z to 311608Z mar, alternate 031359Z to 031608Z apr in areas bound by: a. 34-42.0N…cancels · 2023-03-31
- Hazardous operations 311359Z to 311608Z mar, alternate 031359Z to 031608Z apr in areas bound by: a. 34-42.0N…replaced · 2023-03-31
- Hazardous operations: a. 021359Z to 021606Z apr, alternate 1359Z to 1606Z 03 thru 05 apr in area bound by…cancelled by · 2023-03-31
Nearby now · 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.