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Extended Outlook

Extended outlook forecast

Issued: 2132 on Thu 30 Oct 2014 UTC

Issued by the Met Office, on behalf of the Maritime and Coastguard Agency

Valid from 2100 on Sat 01 Nov 2014 UTC until 2100 on Tue 04 Nov 2014 UTC

Cullercoats

At the start of the period the weather across most of north west Europe will be dominated by a large area of low pressure, 974, which will be centred to the south of Iceland. This feature will be slow moving, but will gradually edge towards the north west British Isles by midday on Monday, filling slowly as it does so. During Tuesday the low is expected to split into two smaller centres located in the North Sea. Meanwhile a ridge of high pressure extends from the Azores High towards Iceland. During Saturday evening strong winds are likely across the majority of Cullercoats area, with a risk of gales north of 55 north for a time early on Sunday. Winds are likely to remain strong through Monday before easing in most parts on Tuesday. The exception is Fair Isle where strong to gale force winds could return by Tuesday evening.

Niton

At the start of the period the weather across most of north west Europe will be dominated by a large area of low pressure, 974, which will be centred to the south of Iceland. This feature will be slow moving, but will gradually edge towards the north west British Isles by midday on Monday, filling slowly as it does so. During Tuesday the low is expected to split into two smaller centres located in the North Sea. Meanwhile a ridge of high pressure extends from the Azores High towards Iceland. Strong winds are likely to affect most of the Niton area for much of the forecast period. The strongest winds could arrive on Tuesday when gales are possible in Fitzroy, Shannon and Sole sea areas. At the same time however it is later on Tuesday when winds could moderate across eastern parts of Niton, at least for a time.

Portpatrick

At the start of the period the weather across most of north west Europe will be dominated by a large area of low pressure, 974, which will be centred to the south of Iceland. This feature will be slow moving, but will gradually edge towards the north west British Isles by midday on Monday, filling slowly as it does so. During Tuesday the low is expected to split into two smaller centres located in the North Sea. Meanwhile a ridge of high pressure extends from the Azores High towards Iceland. On Saturday evening strong winds are likely across the whole area. During Sunday the wind could ease for a time in Bailey, Faeroes and South East Iceland, then later easing also in Malin and Hebrides. However by Monday and into Tuesday strong winds will return to all parts, with gales possible in the north of the area by Tuesday morning.

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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