Coast and sea

Extended outlook

Issued at: .

For the period to .

Extended outlook map

Cullercoats

Sunday evening anticyclone centred Forties 1025, extending a ridge across much of the UK. Low 973 centred Iceland moving east, further low over northwest France moving north. Monday the low over Iceland moves northeast across the Norwegian Sea, with a further low moving east to reach eastern Iceland 991 by midnight. The anticyclone subsides as the first Iceland low pushes fronts across northern UK. Tuesday a new low develops on the front across the UK, reaching Fair Isle 985 by midday, moving northeast. Low over eastern Iceland moves east, filling, as an Atlantic low moves southeast, reaching western Iceland by the evening. Strong winds to near gales reach Fair Isle Sunday night then extend across the northern North Sea Monday morning, risk of isolated gales far north. Winds ease later Monday. Tuesday strong winds to near gales develop across the North Sea, with gales north of 58N at times, risk of severe gales far north. Winds quickly abate Wednesday morning

Niton

Sunday evening anticyclone centred Forties 1025, extending a ridge across much of the UK. Low 973 centred Iceland moving east, further low over northwest France moving north. Monday the low over Iceland moves northeast across the Norwegian Sea, with a further low moving east to reach eastern Iceland 991 by midnight. The anticyclone subsides as the first Iceland low pushes fronts across northern UK. Tuesday a new low develops on the front across the UK, reaching Fair Isle 985 by midday, moving northeast. Low over eastern Iceland moves east, filling, as an Atlantic low moves southeast, reaching western Iceland by the evening. Strong winds reach Shannon late Monday night, then extend across northwest Niton through Tuesday, with isolated near gales across Shannon. Winds temporarily abate Tuesday night. Wednesday north of 45N near gales to gale force winds gradually extend east, with risk severe gales developing Shannon later in the day

Portpatrick

Sunday evening anticyclone centred Forties 1025, extending a ridge across much of the UK. Low 973 centred Iceland moving east, further low over northwest France moving north. Monday the low over Iceland moves northeast across the Norwegian Sea, with a further low moving east to reach eastern Iceland 991 by midnight. The anticyclone subsides as the first Iceland low pushes fronts across northern UK. Tuesday a new low develops on the front across the UK, reaching Fair Isle 985 by midday, moving northeast. Low over eastern Iceland moves east, filling, as an Atlantic low moves southeast, reaching western Iceland by the evening. Near gales or gales north of 58N Sunday night, these easing Monday morning. Late Monday night cyclonic near gales or gales likely to develop Rockall, then transferring northeast Tuesday, chance of isolated severe gales developing Fair Isle or Faeroes Tuesday afternoon. These winds continue northeastwards Wednesday morning, meanwhile further near gales or gales reach Shannon, perhaps Rockall

The extended outlooks are issued once a day, at 2300 GMT and cover the next 3 to 5 days.

For the extended outlooks the waters surrounding the British Isles are divided into three areas: Cullercoats, Portpatrick and Niton. These three areas reflect the coverage areas of the UK's Navtex transmitters, which overlap in some areas.

The extended outlook forecast contains details of the likelihood of gales or storms, a general synopsis and a general forecast for the area of coverage of each Navtex transmitter.

In the UK, the Maritime & Coastguard Agency (MCA) is responsible for the provision of Maritime Safety Information (MSI) to ships at sea, which includes the broadcast of warnings and forecasts. The Met Office initiates warnings and prepares routine forecasts for dissemination on behalf of the MCA.

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