Coast and sea

Extended outlook

Issued at: .

For the period to .

Extended outlook map

Cullercoats

Thursday evening Low pressure centred off Norway extends trough south into North Sea. Weak ridge extends north over British Isles and another Low situated southwest of Iceland. During Friday, trough moves slowly east over Scandinavia followed by the weak ridge. Deep Atlantic low expected to move into Rockall Friday night and slowly move northeast to Hebrides by midnight Sunday. This low is expected to move further northeast off Scotland by Sunday evening. Gales expected on Thursday evening to the east of Scotland, these then moving away to the southeast overnight. Further gales developing in western areas on Friday evening, extending to all areas Friday night. Gales becoming severe at times through the Dover Strait on Saturday into Sunday morning, and in northern areas on Saturday. Then gales becoming severe for a time in Forties, Forth, Tyne and Dogger on Sunday

Niton

Thursday evening Low pressure centred off Norway extends trough south into North Sea. Weak ridge extends north over British Isles and another Low situated southwest of Iceland. During Friday, trough moves slowly east over Scandinavia followed by the weak ridge. Deep Atlantic low expected to move into Rockall Friday night and slowly move northeast to Hebrides by midnight Sunday. This low is expected to move further northeast off Scotland by Sunday evening. Gales developing in Fitzroy and Sole during Friday, then gradually extending into all areas during Friday evening and night. Gales perhaps becoming severe for a time in all areas during Saturday. However severe gales are likely in Shannon from Friday evening with storm force winds possible during Saturday. Severe gales easing to gales in Biscay and Fitzroy Saturday evening, then in all other areas during Sunday. Gales easing in southwestern areas during Sunday

Portpatrick

Thursday evening Low pressure centred off Norway extends trough south into North Sea. Weak ridge extends north over British Isles and another Low situated southwest of Iceland. During Friday, trough moves slowly east over Scandinavia followed by the weak ridge. Deep Atlantic low expected to move into Rockall Friday night and slowly move northeast to Hebrides by midnight Sunday. This low is expected to move further northeast off Scotland by Sunday evening. Severe gales developing in Southeast Iceland Thursday night, with gales or severe gales in Faeroes and perhaps gales in Fair Isle on Saturday. Gales or severe gales then moving into Rockall later Friday, extending to affect all areas Friday night. Storm force winds are likely in Rockall and possible in Shannon, Malin and Bailey during Sunday and possibly early Monday morning. Storm force winds also possible in Faeroes and Southeast Iceland Saturday into early Sunday

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.

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