Exercises

Hazardous operations 1802Z to 1934Z daily 15 thru 17 apr in areas bound by: a. 34-33N 120-48W, 34-36N…

NAVAREA XII 110/99

issued
1999-04-12 08:20Z
status
cancelled 1999-04-15 00:00Z (archive)
self-cancels
1999-04-17 20:34Z
sea
North Pacific Ocean
position
14.929, -127.718
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 1802Z TO 1934Z DAILY 15 THRU 17 APR
   IN AREAS BOUND BY:
   A. 34-33N 120-48W, 34-36N 120-53W, 34-47N 120-40W, 34-44N 120-36W.
   B. 34-20N 121-18W, 34-36N 120-59W, 34-27N 120-48W, 34-14N 121-04W,
      34-13N 121-09W.
   C. 31-28N 123-45W, 32-06N 123-14W, 31-52N 122-52W, 31-15N 123-23W.
   D. 11-18N 129-17W, 15-33N 128-11W, 15-16N 127-05W, 11-02N 128-12W.
2. CANCEL THIS MSG 172034Z APR.

Activity windows · 3 in this warning

opens (UTC)closes (UTC)locallength
1999-04-15 18:02Z1999-04-15 19:34Z—1 h 32
1999-04-16 18:02Z1999-04-16 19:34Z—1 h 32
1999-04-17 18:02Z1999-04-17 19:34Z—1 h 32

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

35 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now

99
00
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11

Season · when military exercises happen here

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A
M
J
J
A
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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.