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Extended Outlook

Extended outlook forecast

Issued: 2004 on Fri 25 Jul 2014 UTC

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

Valid from 2100 on Sun 27 Jul 2014 UTC until 2100 on Wed 30 Jul 2014 UTC

Cullercoats

During Sunday evening and Monday a deep area of low pressure will develop to the south of Iceland. Small low pressure centres over the UK, North Sea and Scandinavia will move southeastwards into central Europe as a ridge of high pressure builds across the UK. Pressure will also remain low over Iberia. During Tuesday the low centre will spread towards Fair Isle as a more cyclonic flow develops across the UK. The low centre will then move into the North Sea through Wednesday as it slowly fills. Winds will be largely light or moderate during Sunday evening Monday and Tuesday with risk of fog patches at first in northern and northwestern sea areas. Winds will back to the west or southwest and become occasionally strong in the North Sea on Wednesday, although remaining lighter in Thames, Dover and Wight

Niton

During Sunday evening and Monday a deep area of low pressure will develop to the south of Iceland. Small low pressure centres over the UK, North Sea and Scandinavia will move southeastwards into central Europe as a ridge of high pressure builds across the UK. Pressure will also remain low over Iberia. During Tuesday the low centre will spread towards Fair Isle as a more cyclonic flow develops across the UK. The low centre will then move into the North Sea through Wednesday as it slowly fills. Winds will be northerly or northwesterly through the period and strong at times in Atlantic sea areas, although generally lighter in Thames, Dover, Wight and Portland. Winds may increase to occasionally strong in the Irish Sea on Wednesday. Northerly winds may increase to near gale at times in South Fitzroy late on Tuesday and early Wednesday

Portpatrick

During Sunday evening and Monday a deep area of low pressure will develop to the south of Iceland. Small low pressure centres over the UK, North Sea and Scandinavia will move southeastwards into central Europe as a ridge of high pressure builds across the UK. Pressure will also remain low over Iberia. During Tuesday the low centre will spread towards Fair Isle as a more cyclonic flow develops across the UK. The low centre will then move into the North Sea through Wednesday as it slowly fills. Northwesterly winds will be occasionally strong in Atlantic sea areas on Sunday evening and Monday, but moderating for a time on Monday. Strong westerly winds will develop later Monday in Rockall, and Bailey. Then becoming strong at times in all sea areas on Tuesday with possible gales in Rockall, Malin, Hebrides and Bailey. Strong westerly winds may develop in Irish Sea on Wednesday

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; Cullercoast, 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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