Exercises

Hazardous operations 0001Z to 0830Z daily 16 thru 18 mar in area bound by 12-00N 163-48E, 12-00N 162-00E,…

North Pacific Ocean · HYDROPAC 439/02

What this record establishes

Archived notice · 2002-03-16 07:16Z

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) · USAKA KWAZALEIN OP# K6534/W2214 090205Z MAR 02; NAVAREA XI 143/02 110800Z MAR 02. Issued 2002-03-11 10:20Z. 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 · 3 in this warning

opens (UTC)closes (UTC)locallength
2002-03-16 00:01Z2002-03-16 08:30Z—8 h 29
2002-03-17 00:01Z2002-03-17 08:30Z—8 h 29
2002-03-18 00:01Z2002-03-18 08:30Z—8 h 29

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

issued
2002-03-11 10:20Z
status
Archived notice
self-cancels
2002-03-18 09:30Z
authority
USAKA KWAZALEIN OP# K6534/W2214 090205Z MAR 02; NAVAREA XI 143/02 110800Z MAR 02
NAVAREA
NAVAREA XI · named as the source of this relay
issued by
USAKA KWAZALEIN OP#
sea
North Pacific Ocean
position
16.221, 170.052
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 0001Z TO 0830Z DAILY 16 THRU 18 MAR
   IN AREA BOUND BY 12-00N 163-48E, 12-00N 162-00E,
   19-00N 162-00E, 19-00N 167-15E, 22-00N 167-15E,
   22-00N 177-00E, 11-33N 177-00E, 11-33N 169-31E,
   10-18N 169-24E, 10-16N 168-47E, 08-54N 168-47E,
   08-54N 167-46E, 09-00N 167-43E, 09-11N 167-40E,
   09-21N 167-36E, 10-12N 167-15E, 11-41N 167-15E,
   11-55N 165-53E, 11-44N 165-34E, 11-45N 165-16E,
   11-43N 164-13E, 11-42N 163-56E, 11-56N 163-48E.
2. CANCEL HYDROPAC 345/01(81,82).
3. CANCEL THIS MSG 180930Z MAR.

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.
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.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROPAC
The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.
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.

All warning terms →

Collected reports in this area · military exercises

24 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

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

Worldwide in the collected sources

10 military exercises listed in force · see all

Record snapshot 2026-10-03 10:38Z; 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.