Coast and sea

Extended outlook

Issued at: .

For the period to .

Extended outlook map

Cullercoats

On Tuesday evening, an area of high pressure will be centred 1029 across Ireland, whilst a trough clears southeast in the North Sea, and further low pressure systems remain to the far west, in the Atlantic Ocean. This anticyclone gradually drifts east and builds during Wednesday, to become centred 1030 across the UK, and then dominating conditions across Cullercoats. High pressure then continues drifting east during Thursday before declining, becoming centred in the North Sea by midnight, and then Germany later Friday. At the same time, various Atlantic low pressure centres are expected to move northeast, to be centred northwest of the UK. Near gales or gales are likely late Tuesday across eastern Cullercoats, but gradually moderating overnight. No hazardous winds are then expected, although winds could become strong at times through the North Sea on Thursday. These strong winds will then ease again on Friday

Niton

On Tuesday evening, an area of high pressure will be centred 1029 across Ireland, whilst a trough clears southeast in the North Sea, and further low pressure systems remain to the northwest, in the Atlantic Ocean. This anticyclone gradually drifts east and builds during Wednesday, to become centred 1030 across the UK, and then dominating conditions across Niton. High pressure then continues drifting east during Thursday before declining, becoming centred in the North Sea by midnight, and then Germany later Friday. At the same time, various Atlantic low pressure centres are expected to move northeast, approaching northwestern Niton, perhaps moving into Shannon later in the day. Hazardous winds are expected across Niton for much of the period, although winds could be strong across southeast Fitzroy at times. Winds likely strengthening in the far west on Friday, with a gales, perhaps severe gales possibly moving into northwest Fitzroy, Sole and Shannon by the evening

Portpatrick

On Tuesday evening, an area of high pressure will be centred 1029 across Ireland, whilst a trough moves north towards Iceland, associated with various low pressure systems in the Atlantic Ocean. The anticyclone gradually drifts east and builds during Wednesday, to become centred 1030 across the UK, and then dominating conditions across much of Portpatrick, however the trough near Iceland will continue only slowly moving northwest. Low centre then develops southwest of Iceland, near the trough, overnight Thursday into Friday before filling later, whilst high pressure continues drifting east and declining. Further Atlantic low then likely to move northeast towards southwest Portpatrick, deepening by Friday evening. Mostly non hazardous winds expected across Portpatrick, however near gale, perhaps isolated gales possible South East Iceland Wednesday, moderating Thursday. Further near gales or gales spreading east into west Portpatrick later Friday, with severe gales possible Shannon and 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.

Caution: The internet is not part of the Maritime Safety Information system and should never be relied upon as the only means to obtain the latest forecast and warning information. Access to the service may be interrupted or delayed from time to time, updates may also be delayed.

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