Coast and sea

Extended outlook

Issued at: .

For the period to .

Cullercoats

Saturday evening, a small but vigorous low lies Thames, near 1004, moving east. High pressure covers much of Fitzroy and Biscay, slow-moving, with another high centred over north Scandinavia, 1031, moving south. At the same time, a larger low, around 996, lies over the North Atlantic, south of Iceland, moving north. Through Sunday, the vigorous low moves southeast into the continent quickly filling, with ridge conditions linking across much of the British Isles to the Scandinavian high. Meanwhile the Atlantic low moves slowly north, deepening. Through Monday and Tuesday, the main Atlantic low remains well to the west as ridge conditions become more dominant across much of the British Isles and surrounding sea areas. A shallow low may form Shannon or Rockall on Tuesday. Residual gales through the English Channel and Thames Saturday evening, moderating during Sunday. Non-hazardous winds are then expected Monday and Tuesday for all sea areas of Cullercoats

Niton

Saturday evening, a small but vigorous low lies Thames, near 1004, moving east. High pressure covers much of Fitzroy and Biscay, slow-moving, with another high centred over north Scandinavia, 1031, moving south. At the same time, a larger low, around 996, lies over the North Atlantic, south of Iceland, moving north. Through Sunday, the vigorous low moves southeast into the continent quickly filling, with ridge conditions linking across much of the British Isles to the Scandinavian high. Meanwhile the Atlantic low moves slowly north, deepening. Through Monday and Tuesday, the main Atlantic low remains well to the west as ridge conditions become more dominant across much of the British Isles and surrounding sea areas. A shallow low may form Shannon or Rockall on Tuesday. Residual gales through the English Channel Saturday evening, moderating during Sunday. Further strong winds developing in northwest Fitzroy, west Sole, Shannon later Sunday, persisting into Monday, before likely moderating Tuesday

Portpatrick

Saturday evening, a small but vigorous low lies Thames, near 1004, moving east. High pressure covers much of Fitzroy and Biscay, slow-moving, with another high centred over north Scandinavia, 1031, moving south. At the same time, a larger low, around 996, lies over the North Atlantic, south of Iceland, moving north. Through Sunday, the vigorous low moves southeast into the continent quickly filling, with ridge conditions linking across much of the British Isles to the Scandinavian high. Meanwhile the Atlantic low moves slowly north, deepening. Through Monday and Tuesday, the main Atlantic low remains well to the west as ridge conditions become more dominant across much of the British Isles and surrounding sea areas. A shallow low may form Shannon or Rockall on Tuesday. Residual strong winds through the Irish Sea and Bristol Channel Saturday evening, soon easing Sunday. Further strong winds developing in westernmost Portpatrick later Sunday, persisting into Monday, before moderating Tuesday

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.

Please refer to GMDSS services, INMARSAT SafetyNET or international NAVTEX for the latest information. When using these web pages, always check that the page on your screen is not from your cache. Use the Refresh or Reload button if in any doubt.