Nav aids

Coast guard station boston hf and mf services unreliable 1230Z to 1630Z daily 16 thru 21 jun

Western North Atlantic · Massachusetts · Radio Services · U.S · NAVAREA IV 443/14

issued: 2014-06-13 16:01Z
status: cancelled 2014-06-18 10:16Z (archive)
self-cancels: 2014-06-21 17:30Z
authority: COGARD CAMSLANT 131444Z JUN 14.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH ATLANTIC.
MASSACHUSETTS.
RADIO SERVICES.
1. U.S. COAST GUARD STATION BOSTON HF AND MF SERVICES UNRELIABLE
   1230Z TO 1630Z DAILY 16 THRU 21 JUN. BOSTON BROADCASTS
   WILL BE TRANSMITTED FROM U.S. COAST GUARD STATIONS
   MIAMI, NEW ORLEANS AND CHESAPEAKE.
2. CANCEL THIS MSG 211730Z JUN 14.

Activity windows · 6 in this warning

opens (UTC)	closes (UTC)	local	length
2014-06-16 12:30Z	2014-06-16 16:30Z	—	4 h
2014-06-17 12:30Z	2014-06-17 16:30Z	—	4 h
2014-06-18 12:30Z	2014-06-18 16:30Z	—	4 h
2014-06-19 12:30Z	2014-06-19 16:30Z	—	4 h
2014-06-20 12:30Z	2014-06-20 16:30Z	—	4 h
2014-06-21 12:30Z	2014-06-21 16:30Z	—	4 h

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

Timeline

Cancel NAVAREA IV 443/14 and this msg, station restoredcancelled by · 2014-06-18

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

193 aids-to-navigation notices in force · see all

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.