Coast and sea

Extended outlook

Issued at: .

For the period to .

Extended outlook map

Cullercoats

A decaying area of low pressure 992, will be located to the northwest of Norway on Thursday evening moving away as a ridge of high pressure from the Azores builds across the UK. High pressure 1039, will then become established across the south of the UK during Friday, whilst much deeper areas of low pressure moves towards Iceland. A pressure trough will affect the northwest of the UK later on Friday and early Saturday but thereafter the high becomes more dominant across the whole of the UK, before drifting out into the North Sea during Sunday. A swathe of strong to gale force winds will affect northern sea areas of Cullercoats on Thursday evening before steadily moderating through Friday morning. Most areas will then experience non-hazardous winds throughout the remainder of this period, except for across Fair Isle where a further bout of strong winds will move through overnight on Friday

Niton

High pressure 1036, from the Azores will be centred just to the west of Fitzroy on Thursday evening gradually building northeastwards to become centred over southern parts of the UK. At the same time much deeper areas of low pressure move towards Iceland with a pressure trough affecting the northwest of the UK later on Friday and early Saturday. Thereafter, high pressure becomes more dominant across the whole of the UK, whilst a mostly stationary pressure trough affects southern parts of Niton. A small area of strong winds are likely to affect southern parts of Fitzroy and Trafalgar at times during this forecast period, mainly off the northwest coast of Spain and down the western coast of Portugal. Otherwise for the remaining sea areas, winds will be non-hazardous through this period apart from Shannon and Sole where there may be a short period of strong winds on Friday

Portpatrick

A decaying area of low pressure 992, will be located to the northwest of Norway on Thursday evening moving away as a ridge of high pressure from the Azores builds across the UK. High pressure 1039, will then become established across the south of the UK during Friday, whilst much deeper areas of low pressure moves towards Iceland. A pressure trough will affect the northwest of the UK later on Friday and early Saturday but thereafter the high becomes more dominant across the whole of the UK, before drifting out into the North Sea during Sunday. A swathe of strong to gale force winds will affect many western and northern sea areas of Portpatrick on Friday, gradually moderating through the evening as they move northwards. Thereafter mostly non-hazardous winds will affect Portpatrick, apart from across Bailey, Faroes and Southeast Iceland where further bouts of strong winds are possible throughout

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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