Uscg communication facility guam (V) 13-28.6N 144-50.1E hf and mf services unreliable 181500Z to 181600Z oct
North Pacific Ocean · HYDROPAC 3302/23
What this record establishes
Archived notice · 2023-10-18 17:00Z
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) · COGARD COMMUNICATIONS COMMAND 0/23 170417Z OCT 23.. Issued 2023-10-17 04:48Z. 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 parsed report position is 13.477, 144.835. It is a position in the source message, not a live location. 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) | local | length |
|---|---|---|---|
| 2023-10-18 15:00Z | 2023-10-18 16:00Z | — | 1 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2023-10-17 04:48Z
- status
- Archived notice
- self-cancels
- 2023-10-18 17:00Z
- authority
- COGARD COMMUNICATIONS COMMAND 0/23 170417Z OCT 23.
- issued by
- COGARD COMMUNICATIONS COMMAND
- sea
- North Pacific Ocean
- position
- 13.477, 144.835
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN NORTH PACIFIC. GUAM. NORTHERN MARIANA ISLANDS. DNC 12. 1. USCG COMMUNICATION FACILITY GUAM (V) 13-28.6N 144-50.1E HF AND MF SERVICES UNRELIABLE 181500Z TO 181600Z OCT. 2. CANCEL HYDROPAC 3299/23. 3. CANCEL THIS MSG 181700Z OCT 23.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- 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.
- 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.
- 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.
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.
- Uscg communication facility guam 13-29.00N 144-50.00E mf, hf and dsc services off air 021200Z to 021600Z oct2026-10-01
- Uscg remote communication facility guam 13-29.00N 144-50.00E hf dsc and transmit unreliable 101400Z to…2026-09-10
- Uscg remote communication facility guam 13-29.00N 144-50.00E dsc and hf unreliable 091530Z to 100330Z sep2026-09-09
- Guam hf NAVTEX station, V, 13-29.0N 144-50.0E, off air2026-09-07
- Uscg remote communication facility guam 13-29.00N 144-50.00E hf NAVTEX and vobra services off air2026-09-07
- Uscg remote communication facility guam 13-29.00N 144-50.00E hf/mf unreliable and dsc inoperative 041500Z to…2026-09-01
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 · 0.4 nm
- Guam hf NAVTEX station, V, 13-29.0N 144-50.0E, off airNav aids · 0.4 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 · 46.1 nm
- Due to tropical storm, the following ports are closed, until further noticeStorms · 109 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 · 117.6 nm
- Hazardous operations 292300Z to 300900Z sep and 302300Z sep to 010700Z oct in area bound by 12-40.00N…Exercises · 117.6 nm
Worldwide in the collected sources
137 aids-to-navigation notices listed in force · see all
Record snapshot 2026-10-01 20:27Z; 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.