Exercises

Hazardous operations 230725Z to 230927Z feb in areas bound by: a. 30-02N 132-48E, 30-20N 132-50E, 30-08N…

North Pacific Ocean · HYDROPAC 318/08

What this record establishes

Archived notice · 2008-02-23 10:27Z

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) · NAVAREA XI 64/08 20 FEB 08.. Issued 2008-02-20 16:09Z. 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.

Current notices and reporting history in the North Pacific Ocean →

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2008-02-23 07:25Z2008-02-23 09:27Z—2 h 02

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

issued
2008-02-20 16:09Z
status
Archived notice
self-cancels
2008-02-23 10:27Z
authority
NAVAREA XI 64/08 20 FEB 08.
NAVAREA
NAVAREA XI · named as the source of this relay
sea
North Pacific Ocean
position
25.021, 157.870
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 230725Z TO 230927Z FEB
   IN AREAS BOUND BY:
   A. 30-02N 132-48E, 30-20N 132-50E,
      30-08N 134-07E, 29-50N 134-04E.
   B. 29-39N 134-47E, 30-05N 134-50E,
      29-56N 136-03E, 29-41N 136-01E,
      29-31N 135-54E.
   C. 28-51N 139-16E, 29-50N 139-25E,
      29-20N 142-39E, 28-54N 142-58E,
      28-17N 142-53E.
   D. 24-54N 156-22E, 26-45N 156-59E,
      23-19N 167-10E, 21-29N 166-33E.
2. CANCEL THIS MSG 231027Z FEB.

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

10 within 180 nm since 2001 · 0 in the last 12 months · 0 listed in force now

01
05
08

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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

28 military exercises listed in force · see all

Record snapshot 2026-10-02 04:40Z; 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.