Nav aids

Pacific ocean 1. hf and mf services unreliable 181500Z to 181600Z oct at uscg remote communication…

NAVAREA XII 721/23

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 162102Z OCT 23.. Issued 2023-10-17 01:33Z. 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: No named location parsed. The parsed report position is 33.122, -83.765. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

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 01:33Z
status: Archived notice
self-cancels: 2023-10-18 17:00Z
authority: COGARD COMMUNICATIONS COMMAND 0/23 162102Z OCT 23.
NAVAREA: NAVAREA XII
issued by: COGARD COMMUNICATIONS COMMAND
position: 33.122, -83.765
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

PACIFIC OCEAN
1. HF AND MF SERVICES UNRELIABLE 181500Z TO 181600Z OCT
   AT USCG REMOTE COMMUNICATION FACILITIES:
   A. BOSTON (NMF) 41-43.00N 070-31.00W
   B. CHESAPEAKE (NMN) 36-44.00N 076-01.00W
   C. MIAMI (NMA) 25-30.00N 080-23.00W
   D. NEW ORLEANS (NMG) 29-53.00N 089-57.00W
   E. HONOLULU (NMO) 21-22.00N 158-09.00W
   F. PT. REYES (NMC) 37-55.00N 122-44.00W
   G. KODIAK (NOJ) 57-46.00N 152-34.00W
   H. GUAM (NRV) 13-29.00N 114-50.00E
   I. CAMBRIA (NMQ) 33-44.00N 118-24.00W.
2. CANCEL THIS MSG 181700Z OCT 23.

Reading this warning

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.
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 · aids-to-navigation notices

25 within 180 nm since 1996 · 0 in the last 12 months · 0 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

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

Worldwide in the collected sources

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

Record snapshot 2026-10-01 19:47Z; 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.