Exercises
Hazardous operations 201900Z to 202300Z may, alternate 211900Z to 212300Z may in area within 36 miles of…
Eastern North Pacific · California · NAVAREA XII 225/21
- issued
- 2021-05-17 21:14Z
- status
- cancelled 2021-05-21 05:09Z (archive)
- self-cancels
- 2021-05-22 00:01Z
- authority
- SEA RANGE OTC 172103Z MAY 21.
- sea
- North Pacific Ocean
- position
- 34.338, -121.837 · r 36.0 nm
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC. CALIFORNIA. 1. HAZARDOUS OPERATIONS 201900Z TO 202300Z MAY, ALTERNATE 211900Z TO 212300Z MAY IN AREA WITHIN 36 MILES OF 34-20-18N 121-50-12W. 2. CANCEL THIS MSG 220001Z MAY 21.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2021-05-20 19:00Z | 2021-05-20 23:00Z | — | 4 h |
| 2021-05-21 19:00Z | 2021-05-21 23:00Z | — | 4 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
967 within 180 nm since 1999 · 5 in the last 12 months · 2 in force now
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26
- Hazardous operations 251300Z to 252100Z aug, alternate 261300Z to 262100Z aug in area bound by 33-37.00N…2026-08-20
- Hazardous operations 251400Z to 252000Z aug, alternate 261400Z to 262000Z aug in area within 56 miles of…2026-08-20
- Hazardous operations 221200Z to 230100Z aug, alternate 1230Z to 0100Z daily 23 and 24 aug in area bound by:…2026-08-17
- Hazardous operations 181700Z to 190001Z aug, alternate 1700Z to 0100Z daily, 20 thru 21 aug in area bound by…2026-08-13
- 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 151900Z to 160000Z may in area bound by 34-39.47N 121-13.08W, 34-23.43N 121-02.07W,…2024-05-09
Season · when military exercises happen here
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month of issue, all years in the archive
Timeline
- Cancel NAVAREA XII 225/21 and this msg, operations completedcancelled by · 2021-05-21
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.