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Extended Outlook

Extended outlook forecast

Issued: 2006 on Sun 02 Aug 2015 UTC

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

Valid from 2100 on Tue 04 Aug 2015 UTC until 2100 on Fri 07 Aug 2015 UTC

Cullercoats

On Tuesday evening a deep low, 984, is expected to lie just northwest of the Outer Hebrides. This low then moves slowly northwest to lie to the west of the Faeroes, 991, by midnight on Thursday and then away northwards to the northeast of Iceland by midday Friday. Another low moves quickly northeast into Sole early on Wednesday and then across Ireland by midnight Thursday and then is absorbed in the circulation of the main low. Yet another shallow low is expected to move northeast into the west of Sole during Thursday and then into the Irish Sea during Friday. Strong south to southwest winds are expected to affect most areas on Tuesday evening and during Wednesday with a risk of gales in Fair Isle. Winds slowly easing in the English Channel and southern North Sea later on Wednesday. Strong southerly winds are expected in areas north of 55 north early on Thursday before easing from the south by Thursday evening

Niton

On Tuesday evening a deep low, 984, is expected to lie just northwest of the Outer Hebrides. This low then moves slowly northwest to lie to the west of the Faeroes, 991, by midnight on Thursday and then away northwards to the northeast of Iceland by midday Friday. Another low moves quickly northeast into Sole early on Wednesday and then across Ireland by midnight Thursday and then is absorbed in the circulation of the main low. Yet another shallow low is expected to move northeast into the west of Sole during Thursday and then into the Irish Sea during Friday. Strong south to southwest winds are expected to affect most areas except Biscay and the south of Fitzroy on Tuesday evening and Wednesday before easing later on Wednesday and early on Thursday. Further strong winds may affect Sole, Lundy, Fastnet and Shannon during Friday

Portpatrick

On Tuesday evening a deep low, 984, is expected to lie just northwest of the Outer Hebrides. This low then moves slowly northwest to lie to the west of the Faeroes, 991, by midnight on Thursday and then away northwards to the northeast of Iceland by midday Friday. Another low moves quickly northeast into Sole early on Wednesday and then across Ireland by midnight Thursday and then is absorbed in the circulation of the main low. Yet another shallow low is expected to move northeast into the west of Sole during Thursday and then into the Irish Sea during Friday. Strong winds are expected to affect most areas on Tuesday evening and during Wednesday with a risk of gales in Hebrides, Bailey, Fair Isle, Faeroes and South-East Iceland. Winds slowly easing from the south during Thursday and early on Friday, but further strong winds may affect Lundy, Fastnet and Shannon during 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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