Exercises
Hazardous operations 0745Z to 1501Z daily 10 thru 13 feb in areas bound by: a. 34-49N 121-02W, 34-50N…
NAVAREA XII 35/99
- issued
- 1999-02-05 06:50Z
- status
- cancelled 1999-02-12 00:00Z (archive)
- self-cancels
- 1999-02-13 16:01Z
- sea
- North Pacific Ocean
- position
- 34.525, -124.033
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS 0745Z TO 1501Z DAILY 10 THRU 13 FEB IN AREAS BOUND BY: A. 34-49N 121-02W, 34-50N 121-02W, 34-52N 120-37W, 34-51N 120-37W. B. 34-34N 126-12W, 35-01N 121-56W, 34-29N 121-52W, 34-03N 126-07W. C. 32-51N 136-51W, 33-04N 135-52W, 32-36N 135-44W, 32-24N 136-44W. 2. CANCEL THIS MSG 131601Z FEB.
Activity windows · 4 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 1999-02-10 07:45Z | 1999-02-10 15:01Z | — | 7 h 16 |
| 1999-02-11 07:45Z | 1999-02-11 15:01Z | — | 7 h 16 |
| 1999-02-12 07:45Z | 1999-02-12 15:01Z | — | 7 h 16 |
| 1999-02-13 07:45Z | 1999-02-13 15:01Z | — | 7 h 16 |
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
300 within 180 nm since 1999 · 1 in the last 12 months · 0 in force now
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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 151900Z to 160000Z may in area bound by 34-39.47N 121-13.08W, 34-23.43N 121-02.07W,…2024-05-09
- Hazardous operations 082000Z to 090130Z may in area bound by 34-39.78N 121-13.13W, 34-23.72N 121-02.12W,…2024-05-03
- Hazardous operations 251400Z to 260030Z apr, alternate 261400Z to 270030Z and 291400Z to 300030Z apr in area…2024-04-23
- Hazardous operations 082030Z to 090030Z mar in area within 30 miles of 33-32.50N 122-23.50W2024-03-03
- Hazardous operations 221900Z to 222200Z feb in area within 33 miles of 34-27.00N 121-52.75W2024-02-18
Season · when military exercises happen here
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F
M
A
M
J
J
A
S
O
N
D
month of issue, all years in the archive
Timeline
- NAVAREA XII messages in force 120800Z feb 99cancelled by · 1999-02-12
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.