When the coast guards of the UK and Ireland broadcast weather forecasts, gale warnings and maritime safety information on medium frequency (MF), on the timelines of your cities and in your own time zone.
HM Coastguard broadcasts from Shetland, Stornoway (Butt of Lewis), Humber (Cullercoats) and Falmouth (Isles of Scilly); the Irish Coast Guard from Malin Head in Donegal and Valentia in Kerry. Each broadcast is a short block of about fifteen minutes: inshore waters and sea area forecasts, gale and strong wind warnings, and navigational warnings. The northern stations repeat every three hours, Malin Head every four, Valentia eight times a day.
MF reaches further offshore than VHF, so these broadcasts matter to yachts and fishing boats beyond VHF range, and to radio listeners who log coast stations. Broadcast times are published in UTC, while the UK and Ireland change their clocks twice a year; this calendar follows the EiBi schedule and shows every broadcast at its local time in each of your cities.
Select a broadcast to see its frequency, transmitter and a link to listen on an online SDR receiver. VHF broadcasts, which are announced on channel 16 and then read on a working channel, are not included.
Shetland, Stornoway and Humber Coastguard broadcast maritime safety information every three hours, around the clock; Falmouth Coastguard twice in the evening. The timeline shows each broadcast in your local time, so you do not have to convert from UTC.
On medium frequency: Shetland 1770 kHz, Stornoway 1743 kHz, Humber 1925 kHz and Falmouth 2226 kHz (from the Isles of Scilly). Select a broadcast on the timeline to see its frequency and transmitter.
Malin Head Coastguard broadcasts on 1677 kHz every four hours, and Valentia Radio on 1752 kHz eight times a day. Both cover the Irish coastal waters and the sea areas around Ireland.
Each broadcast has a Listen live link that opens the University of Twente WebSDR in the Netherlands, tuned to the frequency in upper sideband (USB), which is how these MF broadcasts are transmitted.
In Shortwave. Perfect Clock — a world clock with your calendar across time zones.