Exercises
Hazardous operations 191700Z to 191800Z and 192000Z to 192100Z mar in areas bound by: a. 31-00N 118-25W,…
NAVAREA XII 77/99
- issued
- 1999-03-15 11:10Z
- status
- cancelled 1999-03-19 00:00Z (archive)
- self-cancels
- 1999-03-19 22:00Z
- sea
- North Pacific Ocean
- position
- 30.283, -117.291
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS 191700Z TO 191800Z AND 192000Z TO 192100Z MAR IN AREAS BOUND BY: A. 31-00N 118-25W, 31-00N 117-40W, 30-25N 117-40W, 31-25N 118-25W. B. 31-10N 117-35W, 31-10N 116-45W, 30-25N 116-15W, 30-25N 117-35W. C. 30-25N 118-25W, 30-25N 116-15W, 29-35N 116-15W, 29-35N 118-25W. 2. CANCEL THIS MSG 192200Z MAR.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 1999-03-19 17:00Z | 1999-03-19 18:00Z | — | 1 h |
| 1999-03-19 20:00Z | 1999-03-19 21:00Z | — | 1 h |
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
466 within 180 nm since 1999 · 4 in the last 12 months · 4 in force now
99
00
05
10
15
20
25
26
- 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 10800Z may to 010800Z jun in area bound by 32-55.00N 118-25.00W, 32-55.00N 118-15.00W,…2024-04-26
- Hazardous operations 010800Z may to 010800Z jun in area bound by 32-52.70N 119-11.97W, 33-08.07N 118-52.08W,…2024-04-26
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
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.