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yellow Warnings have been issued for the United Kingdom

Extended Outlook

Extended outlook forecast

Issued: 2051 on Mon 26 Jan 2015 UTC

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

Valid from 2000 on Wed 28 Jan 2015 UTC until 2000 on Sat 31 Jan 2015 UTC

Cullercoats

On Wednesday evening a large and complex low is expected to be centred between SE Iceland and the Norwegian Sea, less than 970. The low pressure system is expected to transfer southeast through the period, to lie between southern Scandinavia, the North Sea, and western Norway, by midday on Saturday. Active troughs and small low centres are likely to develop around the complex main low centre, but confidence is low for detail on these features at present. High pressure will remain slow moving over the Azores throughout, declining from around 1040 to near 1030, and by Saturday a ridge is likely to extend northwards towards southwest Iceland. Strong to gale force winds are expected in all sea areas for much of the period, with locally severe gales developing at times in association with any active troughs or small low centres

Niton

On Wednesday evening a large and complex low is expected to be centred between SE Iceland and the Norwegian Sea, less than 970. The low pressure system is expected to transfer southeast through the period, to lie between southern Scandinavia, the North Sea, and western Norway, by midday Saturday. Active troughs and small low centres are likely to develop around the complex main low centre, but confidence is low for detail on these features at present. High pressure will remain slow moving over the Azores throughout, declining from around 1040 to near 1030, and by Saturday a ridge is likely to extend northwards towards southwest Iceland. Strong to gale force winds are expected in all sea areas for much of the period, with locally severe gales developing for a time on Thursday in all sea areas except the southwest of Fitzroy

Portpatrick

On Wednesday evening a large and complex low is expected to be centred between SE Iceland and the Norwegian Sea, less than 970. The low pressure system is expected to transfer southeast through the period, to lie between southern Scandinavia, the North Sea, and western Norway, by midday Saturday. Active troughs and small low centres are likely to develop around the complex main low centre, but confidence is low for detail on these features at present. High pressure will remain slow moving over the Azores throughout, declining from around 1040 to near 1030, and by Saturday a ridge is likely to extend northwards towards southwest Iceland. Near gale to severe gale force winds are expected in all sea areas for much of the period, especially on Wednesday and Thursday, and in association with any active troughs or small low centres. Light icing is also possible in the north of SE Iceland sea area on Thursday and Friday

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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