Exercises

Hazardous operations 310300Z to 310830Z jul, alternate 0300Z to 0830Z daily 01 and 02 aug in area bound by…

North Pacific Ocean · NAVAREA XII 317/09

What this record establishes

Archived notice · 2009-07-31 08:13Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · PACMISRANFAC 081715Z JUL 09.. Issued 2009-07-26 07:14Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
North Pacific Ocean. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the North Pacific Ocean →

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2009-07-31 03:00Z2009-07-31 08:30Z—5 h 30

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued
2009-07-26 07:14Z
status
Archived notice
self-cancels
2009-08-02 09:30Z
authority
PACMISRANFAC 081715Z JUL 09.
NAVAREA
NAVAREA XII
issued by
PACMISRANFAC
sea
North Pacific Ocean
position
25.557, -159.598
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 310300Z TO 310830Z JUL,
   ALTERNATE 0300Z TO 0830Z DAILY 01 AND 02 AUG
   IN AREA BOUND BY
   22-05N 159-46W, 22-08N 159-45W, 22-56N 160-11W,
   23-37N 156-48W, 24-29N 155-41W, 25-25N 155-28W,
   27-39N 157-06W, 29-05N 160-35W, 28-26N 161-39W,
   24-44N 163-09W, 22-35N 162-26W, 22-23N 161-30W,
   22-48N 160-36W, 22-03N 159-49W, 22-02N 159-47W.
2. CANCEL THIS MSG 020930Z AUG.

Reading this warning

Hazardous operations
NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
Date-time group (DTG)
A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
Area bound by
Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · military exercises

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

99
00
05
10
15
20
23

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

Worldwide in the collected sources

9 military exercises listed in force · see all

Record snapshot 2026-10-03 17:46Z; source collection times vary.

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.