Exercises
Hazardous operations 0631Z to 1200Z daily 22 thru 24 may in areas bound by: a. 34-23N 120-26W, 34-22N…
NAVAREA XII 158/99
- issued
- 1999-05-17 19:04Z
- status
- cancelled 1999-05-22 10:52Z (archive)
- self-cancels
- 1999-05-24 13:00Z
- authority
- 30 RANS VANDENBERG AFB OP #9111 171730Z MAY 99
- sea
- North Pacific Ocean
- position
- 28.083, -117.288
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS 0631Z TO 1200Z DAILY 22 THRU 24 MAY IN AREAS BOUND BY: A. 34-23N 120-26W, 34-22N 120-32W, 34-37N 120-40W, 34-38N 120-34W. B. 31-34N 119-21W, 32-38N 119-50W, 32-47N 119-24W, 31-42N 118-56W. C. 29-50N 118-33W, 30-29N 118-49W, 30-33N 118-37W, 29-54N 118-21W. D. 27-25N 117-15W, 28-35N 117-47W, 28-45N 117-19W, 27-35N 116-48W. E. 14-39N 110-50W, 16-28N 111-38W, 16-33N 111-26W, 14-44N 110-39W. 2. CANCEL THIS MSG 241300Z MAY.
Activity windows · 3 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 1999-05-22 06:31Z | 1999-05-22 12:00Z | — | 5 h 29 |
| 1999-05-23 06:31Z | 1999-05-23 12:00Z | — | 5 h 29 |
| 1999-05-24 06:31Z | 1999-05-24 12:00Z | — | 5 h 29 |
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
64 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
99
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23
- Gunnery exercises 220602Z to 220710Z, 230537Z to 230645Z, 240512Z to 240619Z, 250446Z to 250554Z, 260421Z to…2023-06-22
- Gunnery exercises 101100Z to 101700Z jun in area bound by 30-30.00N 117-40.00W, 30-30.00N 118-45.00W,…2023-06-06
- Hazardous operations 1218Z to 1411Z daily 19 thru 24 may in areas bound by: a. 34-41.00N 120-41.00W,…2023-05-13
- Hazardous operations 101954Z to 102100Z, 111941Z to 112047Z, 121926Z to 122033Z, 131912Z to 132019Z, 141858Z…2023-05-06
- Hazardous operations 1805Z to 0030Z daily 17 thru 20 mar in areas bound by: a. 34-40.0N 120-43.0W, 34-40.0N…2023-03-14
- Hazardous operations 1805Z to 0030Z daily 16 thru 20 mar in areas bound by: a. 34-40.00N 120-43.00W,…2023-03-11
Season · when military exercises happen here
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month of issue, all years in the archive
Timeline
- Cancel NAVAREA XII 158/99 and this msg, operations completedcancelled by · 1999-05-22
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.