Exercises
Hazardous operations: a. 0631Z to 1359Z daily 28 thru 31 oct in area bound by 34-40N 121-18W, 34-57N…
Eastern North Pacific · California · NAVAREA XII 478/20
- issued
- 2020-10-23 03:45Z
- status
- cancelled 2020-10-28 13:50Z (archive)
- self-cancels
- 2020-10-31 14:51Z
- authority
- WESTERN RANGE 132331Z OCT 20.
- sea
- North Pacific Ocean
- position
- 34.600, -123.299
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS:
A. 0631Z TO 1359Z DAILY 28 THRU 31 OCT
IN AREA BOUND BY
34-40N 121-18W, 34-57N 121-18W,
34-56N 120-37W, 34-46N 120-37W,
34-40N 120-54W.
B. 0631Z TO 1351Z DAILY 28 THRU 31 OCT
IN AREA BOUND BY
34-13N 124-41W, 34-40N 124-46W,
35-00N 121-54W, 34-32N 121-50W.
C. 0631Z TO 1351Z DAILY 28 THRU 31 OCT
IN AREA BOUND BY
32-15N 137-11W, 32-41N 137-19W,
32-59N 135-52W, 32-34N 135-45W.
2. CANCEL THIS MSG 311451Z OCT 20.
Activity windows · 8 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2020-10-28 06:31Z | 2020-10-28 13:51Z | — | 7 h 20 |
| 2020-10-28 06:31Z | 2020-10-28 13:59Z | — | 7 h 28 |
| 2020-10-29 06:31Z | 2020-10-29 13:51Z | — | 7 h 20 |
| 2020-10-29 06:31Z | 2020-10-29 13:59Z | — | 7 h 28 |
| 2020-10-30 06:31Z | 2020-10-30 13:51Z | — | 7 h 20 |
| 2020-10-30 06:31Z | 2020-10-30 13:59Z | — | 7 h 28 |
| 2020-10-31 06:31Z | 2020-10-31 13:51Z | — | 7 h 20 |
| 2020-10-31 06:31Z | 2020-10-31 13:59Z | — | 7 h 28 |
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
563 within 180 nm since 1999 · 3 in the last 12 months · 0 in force now
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26
- 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 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 091900Z to 092200Z may in area bound by 33-53.45N 120-27.05W, 33-43.15N 119-46.30W,…2024-05-04
- 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
Season · when military exercises happen here
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A
M
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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.