Exercises
Hazardous operations 0231Z to 0341Z daily 05 thru 10 dec in area bound by 34-29N 120-40W, 34-31N 120-46W,…
NAVAREA XII 345/07
- issued
- 2007-12-03 18:48Z
- status
- cancelled 2007-12-10 04:41Z (archive)
- self-cancels
- 2007-12-10 04:41Z
- authority
- WESTERN RANGE OPERATIONS W1386 03 DEC 07.
- sea
- North Pacific Ocean
- position
- 34.628, -120.670
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS OPERATIONS 0231Z TO 0341Z DAILY 05 THRU 10 DEC IN AREA BOUND BY 34-29N 120-40W, 34-31N 120-46W, 34-46N 120-41W, 34-44N 120-34W. 2. CANCEL THIS MSG 100441Z DEC.
Activity windows · 6 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2007-12-05 02:31Z | 2007-12-05 03:41Z | — | 1 h 10 |
| 2007-12-06 02:31Z | 2007-12-06 03:41Z | — | 1 h 10 |
| 2007-12-07 02:31Z | 2007-12-07 03:41Z | — | 1 h 10 |
| 2007-12-08 02:31Z | 2007-12-08 03:41Z | — | 1 h 10 |
| 2007-12-09 02:31Z | 2007-12-09 03:41Z | — | 1 h 10 |
| 2007-12-10 02:31Z | 2007-12-10 03:41Z | — | 1 h 10 |
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
1032 within 180 nm since 1999 · 6 in the last 12 months · 3 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 32-55.00N 118-25.00W, 32-55.00N 118-15.00W,…2026-07-23
- 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
Season · when military exercises happen here
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F
M
A
M
J
J
A
S
O
N
D
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.