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Extended Outlook

2100 UTC Friday 9 December to 2100 UTC Monday 12 December 2016
Issued by the Met Office, on behalf of the Maritime and Coastguard Agency, at 072133 UTC

Cullercoats

On Friday evening a ridge of high pressure lies over continental Europe, 1034 with a low pressure, 969, to the south of Iceland. This low tracks northeast to Lie over the Faeroes by Saturday evening, 994, as the ridge of high pressure builds across Biscay and the southern UK. Through Sunday the low centre fills and tracks east into Scandinavia as a weakening feature. Through Sunday night further low pressure centres are likely to develop to the west of Portpatrick but evolution and tracks are uncertain at this stage. Strong winds moving into the northwest of Cullercoats through Saturday, spreading across most of the North Sea by midday Sunday. These occasionally strengthening to near gales as the low centre transits central and southern North Sea areas into Sunday night. Winds easing through Monday morning before strengthening from the north west later in the day, becoming Strong or near gale over northern Cullercoats by evening

Niton

On Friday evening a ridge of high pressure lies over continental Europe, 1034 with a low pressure, 969, to the south of Iceland. This low tracks northeast to Lie over the Faeroes by Saturday evening, 994, as the ridge of high pressure builds across Biscay and the southern UK. Through Sunday the low centre fills and tracks east into Scandinavia as a weakening feature. Through Sunday night further low pressure centres are likely to develop to the west of Portpatrick but evolution and tracks are uncertain at this stage. On Friday evening light winds cover much of Niton, although some strong winds across parts of Fitzroy and Shannon. These easing by Saturday night before winds strengthen from the west through early Sunday, becoming strong or near gale over the northwest of Fitzroy, Sole and Shannon by evening. Risk of further strong winds or gales on Monday, mainly in the north and west of Niton

Portpatrick

On Friday evening a ridge of high pressure lies over continental Europe, 1034 with a low pressure, 969, to the south of Iceland. This low tracks northeast to Lie over the Faeroes by Saturday evening, 994, as the ridge of high pressure builds across Biscay and the southern UK. Through Sunday the low centre fills and tracks east into Scandinavia as a weakening feature. Through Sunday night further low pressure centres are likely to develop to the west of Portpatrick but evolution and tracks are uncertain at this stage. Strong winds across all bar the far southeast of Portpatrick on Friday evening with gales across Rockall and Bailey for a time into Monday. Near gales at times across the north through Saturday, easing into Sunday. Risk of further strong winds or gales on Monday, mainly in the west of the area

Extended outlook overview

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

For the extend 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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