Exercises
Hazardous operations 0731Z to 1501Z daily 02 thru 04 apr in areas bound by: a. 34-50N 121-02W, 34-52N…
NAVAREA XII 123/08
- issued
- 2008-03-30 07:27Z
- status
- cancelled 2008-04-02 12:11Z (archive)
- self-cancels
- 2008-04-04 16:01Z
- authority
- WESTERN RANGE OPS W8125 24 MAR 08.
- sea
- North Pacific Ocean
- position
- 34.291, -126.338
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS 0731Z TO 1501Z DAILY 02 THRU 04 APR
IN AREAS BOUND BY:
A. 34-50N 121-02W, 34-52N 121-02W,
34-53N 120-39W, 34-52N 120-39W.
B. 34-38N 126-28W, 35-02N 122-12W,
34-30N 122-08W, 34-06N 126-25W.
C. 33-04N 136-57W, 33-15N 135-57W,
32-48N 135-50W, 32-37N 136-50W.
2. CANCEL THIS MSG 041601Z APR.
Activity windows · 3 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2008-04-02 07:31Z | 2008-04-02 15:01Z | — | 7 h 30 |
| 2008-04-03 07:31Z | 2008-04-03 15:01Z | — | 7 h 30 |
| 2008-04-04 07:31Z | 2008-04-04 15:01Z | — | 7 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
127 within 180 nm since 1999 · 1 in the last 12 months · 0 in force now
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00
05
10
15
20
25
26
- Hazardous operations 190900Z to 192100Z aug, alternate 0900Z to 2100Z daily 20 and 21 aug in areas bound by:…2026-08-17
- Hazardous operations 251400Z to 260030Z apr, alternate 261400Z to 270030Z and 291400Z to 300030Z apr in area…2024-04-23
- Hazardous operations 01 and 02 nov: a. 0631Z to 1335Z in area bound by 34-40.00N 121-25.00W, 34-40.00N…2023-10-26
- Hazardous operations 01 and 02 nov: a. 0631Z to 1335Z in area bound by 34-40.00N 121-25.00W, 34-40.00N…2023-10-26
- Hazardous operations daily 06 and 07 sep: a. 0631Z to 1337Z in area bound by 34-38.00N 121-23.00W, 34-38.00N…2023-09-01
- Hazardous operations 191400Z to 192100Z aug in areas bound by: a. 32-41.90N 121-37.73W, 32-51.43N…2023-08-15
Season · when military exercises happen here
J
F
M
A
M
J
J
A
S
O
N
D
month of issue, all years in the archive
Timeline
- Cancel NAVAREA XII 123/08 and this msg, operations completedcancelled by · 2008-04-02
Nearby now · within 120 nm
Nothing else in force 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.