Coast and sea
Issued at: .
For the period to .
Extended outlook map
Cullercoats
Low 994 expected west of Ireland Friday evening, extending a trough northeast across Shetland before moving north and filling as High 1023 west of Portugal moves northeast over Biscay on Saturday. The high continues northeast over the continent on Sunday and Monday, building a weak ridge over the eastern North Sea. Meanwhile, a new Atlantic low, 991, becomes slow moving south of Iceland Sunday morning, extending troughs across the UK later Sunday and Monday. No gales expected. Strong winds are expected in sea areas Viking, North Utsire, South Utsire, Forth, Tyne, Dogger, Fisher, German Bight, Humber, Thames, Dover and Wight Friday evening until early Saturday.
Niton
Low 994 expected west of Ireland Friday evening, extending a trough northeast across Shetland before moving north and filling as High 1023 west of Portugal moves northeast over Biscay on Saturday. The high continues northeast over the continent on Sunday and Monday, building a weak ridge over the eastern North Sea. Meanwhile, a new Atlantic low, 991, becomes slow moving south of Iceland Sunday morning, extending troughs across the UK later Sunday and Monday. Gales are expected in Shannon Friday evening. There is a risk of gales in Lundy, Fastnet, Irish Sea and Shannon on Sunday. Strong winds are expected in all sea areas Friday evening, easing in Thames, Dover, Wight, Portland, Plymouth, Biscay on Saturday. Strong winds then affecting all sea areas on Sunday, before easing for a time later Sunday and early Monday in Plymouth, Biscay, Lundy, Fastnet and Irish Sea. No widespread fog expected
Portpatrick
Low 994 expected west of Ireland Friday evening, extending a trough northeast across Shetland before moving north and filling as High 1023 west of Portugal moves northeast over Biscay on Saturday. High continues northeast over the continent on Sunday and Monday, building a weak ridge over the eastern North Sea. Meanwhile, new Atlantic low, 991, becomes slow moving south of Iceland Sunday morning, extending troughs across the UK later Sunday and Monday. Gales expected Shannon Friday evening, a risk of gales Lundy, Fastnet, Irish Sea, Shannon Baliey later Sunday and early Monday, and SE Iceland Friday evening to Monday morning. Strong winds expected all areas except Hebrides, Bailey, Fair Isle and Faeroes Friday evening, extending to Fair Isle later Saturday, then all sea areas Sunday, easing later Sunday in Fastnet and Irish Sea. Strong winds across all sea areas Monday, easing later across Fair Isle and Faeroes. Widespread fog likely across Fair Isle and Faeroes Friday evening and early Saturday.
The extended outlook information
The extended outlooks are issued once a day, at 2300 GMT and cover the next 3 to 5 days.
For the extended 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.
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