Exercises
Hazardous operations 311930Z to 312359Z aug, alternate 011930Z to 012359Z sep in area within ten miles of…
Eastern North Pacific · California · NAVAREA XII 459/21
- issued
- 2021-08-30 23:18Z
- status
- cancelled 2021-09-02 00:59Z (archive)
- self-cancels
- 2021-09-02 00:59Z
- authority
- SEA RANGE OTC 301921Z AUG 21.
- sea
- North Pacific Ocean
- position
- 34.483, -121.417 · r 10.0 nm
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC. CALIFORNIA. 1. HAZARDOUS OPERATIONS 311930Z TO 312359Z AUG, ALTERNATE 011930Z TO 012359Z SEP IN AREA WITHIN TEN MILES OF 34-29N 121-25W. 2. CANCEL THIS MSG 020059Z SEP 21.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2021-08-31 19:30Z | 2021-08-31 23:59Z | — | 4 h 29 |
| 2021-09-01 19:30Z | 2021-09-01 23:59Z | — | 4 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
971 within 180 nm since 1999 · 5 in the last 12 months · 2 in force now
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- 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
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.