Nav aids

Uscg communication facility guam 13-29.00N 144-50.00E mf, hf and dsc services off air 021200Z to 021600Z oct

North Pacific Ocean · HYDROPAC 2844/26

What this record establishes

Cancelled notice · 2026-10-01 16:15Z

This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.

Source and dates: NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-10-01 09:00Z. First collected 2026-10-01 19:02Z; last seen in collection 2026-10-01 21:02Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: North Pacific Ocean. The parsed report position is 13.483, 144.833. It is a position in the source message, not a live location. 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)	local	length
2026-10-02 12:00Z	2026-10-02 16:00Z	—	4 h

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

issued: 2026-10-01 09:00Z
status: Cancelled notice
self-cancels: 2026-10-02 17:00Z
sea: North Pacific Ocean
position: 13.483, 144.833
source: NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-10-01 19:02Z

Original warning text

NORTH PACIFIC.
GUAM.
1. USCG COMMUNICATION FACILITY GUAM
   13-29.00N 144-50.00E MF, HF AND DSC SERVICES
   OFF AIR 021200Z TO 021600Z OCT.
2. CANCEL THIS MSG 021700Z OCT 26.

Reading this warning

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.
DSC (Digital Selective Calling): The digital radio alert built into modern marine radios — one button sends a distress alert with the vessel's identity and position.
Inoperative / unreliable / off air: An aid or radio service is not working as charted or published.
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.
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 · aids-to-navigation notices

37 within 180 nm since 2008 · 10 in the last 12 months · 2 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 · 0 nm
Guam hf NAVTEX station, V, 13-29.0N 144-50.0E, off airNav aids · 0 nm
Hazardous operations 252000Z to 261000Z sep in area bound by 13-32.00N 144-04.00E, 13-32.00N 144-27.00E,…Exercises · 35.2 nm
Due to tropical storm bavi: 1. the following port(s) are closed: a. rota island 14-08.35N 145-08.09EStorms · 45.7 nm
Due to tropical storm, the following ports are closed, until further noticeStorms · 108.7 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 · 117.9 nm
Hazardous operations 292300Z to 300900Z sep and 302300Z sep to 010700Z oct in area bound by 12-40.00N…Exercises · 117.9 nm

Worldwide in the collected sources

137 aids-to-navigation notices listed in force · see all

Record snapshot 2026-10-01 21:04Z; source collection times vary.

Nav aids

Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →

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.