Coast and sea
Issued at: .
For the period to .
Extended outlook map
Cullercoats
A low, 980, lies west of Bailey extending a trough across the UK with a second low, 977, over Sole and a third, 979, over SE Iceland. The southern low tracks eastwards across the south of the UK through Friday whilst the northern low fills and loses its identity. Saturday sees the low now 992 over Humber whilst high pressure, 1031, forms in Biscay and extends a ridge northwards. On Sunday the low moves over the continenet and the ridge moves eastwards further over the UK. No strong winds in Cullercoats to begin with but some developing in S Utsire overnight into Friday. As the low tracks across the UK, strong winds with Gales develop throughout the English Channel early friday morning. By Friday afternoon strong winds have also spread into Forties and Fisher with Gales developing overnight into Saturday. Winds remaining similar until Sunday when they begin to fade, becoming nil across Cullercoats by 1800UTC
Niton
A low, 980, lies west of Bailey extending a trough across the UK with a second low, 977, over Sole and a third, 979, over SE Iceland. The southern low tracks eastwards across the south of the UK through Friday whilst the northern low fills and loses its identity. Saturday sees the low now 992 over Humber whilst high pressure, 1031, forms in Biscay and extends a ridge northwards. On Sunday the low moves over the continenet and the ridge moves eastwards further over the UK. Widespread strong winds across Niton with gales in Fitzroy. The gales move eastwards into the English channel, following the low across the UK, with widespread strong winds remaining elsewhere throughout both Friday and Saturday. Winds finally begin to subside in the early hours of Sunday as the high pressure in Biscay extends the ridge over the UK. Some strong winds develop in Sole and Shannon throughout Sunday but remain nil elsewhere
Portpatrick
A low, 980, lies west of Bailey extending a trough across the UK with a second low, 977, over Sole and a third, 979, over SE Iceland. The southern low tracks eastwards across the south of the UK through Friday whilst the northern low fills and loses its identity. Saturday sees the low now 992 over Humber whilst high pressure, 1031, forms in Biscay and extends a ridge northwards. On Sunday the low moves over the continenet and the ridge moves eastwards further over the UK. No strong winds to bgein with across Portpatrick. Friday morning sees widespread strong winds forming in Lundy, Fastnet, Shannon and Rockall, then further spreading eastwards into Hebrides and Malin by the early hours of Saturday morning. Winds then remaining fairly consistent throughout Saturday day time, then begin to fade regionwide in the evening, becoming nil. Sunday sees some strong winds develop in Shannon and Rockall but remain nil elsewhere
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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