Exercises

Hazardous operations are taking place near Guam in the Philippine Sea from 25 September 2000Z to 26 September 1000Z within a defined area.

Philippine Sea · HYDROPAC 2772/26

What this record establishes

Listed in force

The latest collected record lists this warning as active. This is the status of the notice, not a live observation of conditions at the location.

Source and dates: NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-09-25 00:14Z. First collected 2026-09-25 18:02Z; last seen in collection 2026-09-25 21:47Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: Philippine Sea. 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 Philippine Sea →

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2026-09-25 20:00Z	2026-09-26 10:00Z	—	14 h

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

issued: 2026-09-25 00:14Z
status: Listed in force
self-cancels: 2026-09-26 11:00Z
sea: Philippine Sea
position: 13.308, 144.258
nearest port: Saipan · 144 nm
source: NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-09-25 18:02Z

Original warning text

NORTH PACIFIC.
PHILIPPINE SEA.
GUAM.
1. HAZARDOUS OPERATIONS 252000Z TO 261000Z SEP
   IN AREA BOUND BY
   13-32.00N 144-04.00E, 13-32.00N 144-27.00E,
   13-05.00N 144-27.00E, 13-05.00N 144-04.00E.
2. CANCEL THIS MSG 261100Z SEP 26.

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 →

Conditions at the position · now

loading…

MET Norway · NOAA WaveWatch III · HYCOM · GEBCO 2020 · model data at the centroid, not an observation

Collected reports in this area · military exercises

973 within 180 nm since 2002 · 58 in the last 12 months · 3 listed in force now

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

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

Uscg remote communication facility guam 13-29.00N 144-50.00E broadcast and communication services unreliableNav aids · 35.2 nm
Guam hf NAVTEX station, V, 13-29.0N 144-50.0E, off airNav aids · 35.2 nm
Due to tropical storm bavi: 1. the following port(s) are closed: a. rota island 14-08.35N 145-08.09EStorms · 73.5 nm
Hazardous operations 2200Z to 1000Z daily 28 thru 30 sep in area bound by 12-40.00N 144-45.00E, 11-00.00N…Exercises · 97.8 nm
Hazardous operations 292300Z to 300900Z sep and 302300Z sep to 010700Z oct in area bound by 12-40.00N…Exercises · 97.8 nm

Worldwide in the collected sources

30 military exercises listed in force · see all

Record snapshot 2026-09-25 21:52Z; 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.