Exercises
Hazardous operations 0731Z to 1601Z daily 14 thru 17 sep in areas bound by: a. 34-50N 120-56W, 34-52N…
NAVAREA XII 255/01
- issued
- 2001-09-10 10:40Z
- status
- cancelled 2001-09-13 09:10Z (archive)
- self-cancels
- 2001-09-17 17:01Z
- authority
- VAFB OP # W2550 071845Z SEP 01; VAFB OP # W7688 071745Z SEP 01
- sea
- North Pacific Ocean
- position
- 34.425, -124.562
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS 0731Z TO 1601Z DAILY 14 THRU 17 SEP IN AREAS BOUND BY: A. 34-50N 120-56W, 34-52N 120-56W, 34-53N 120-39W, 34-52N 120-39W. B. 34-23N 127-05W, 34-56N 122-50W, 34-24N 122-45W, 33-52N 127-00W. C. 32-32N 137-28W, 32-45N 136-29W, 32-18N 136-20W, 32-05N 137-20W. D. 34-49N 121-01W, 34-50N 121-01W, 34-52N 120-36W, 34-51N 120-36W. E. 34-32N 126-19W, 35-00N 122-03W, 34-28N 121-59W, 34-00N 126-14W. F. 32-54N 136-23W, 33-06N 135-23W, 32-38N 135-15W, 32-26N 136-15W. 2. CANCEL THIS MSG 171701Z SEP.
Activity windows · 4 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2001-09-14 07:31Z | 2001-09-14 16:01Z | — | 8 h 30 |
| 2001-09-15 07:31Z | 2001-09-15 16:01Z | — | 8 h 30 |
| 2001-09-16 07:31Z | 2001-09-16 16:01Z | — | 8 h 30 |
| 2001-09-17 07:31Z | 2001-09-17 16:01Z | — | 8 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
269 within 180 nm since 1999 · 2 in the last 12 months · 0 in force now
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- Hazardous operations 251400Z to 252000Z aug, alternate 261400Z to 262000Z aug in area within 56 miles of…2026-08-20
- 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
Season · when military exercises happen here
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month of issue, all years in the archive
Timeline
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.