Coast and sea
Issued at: .
For the period to .
Extended outlook map
Cullercoats
Slow moving, complex low system over the UK and Scandinavia, with a Low centre 1000 Dogger and Humber later Thursday. Low centre weakens and moves southeast into German Bight early Friday, a second Low centre 1004 west of Shannon and Rockall by early on Friday will deepen and move southeast, expected over Fitzroy by late on Friday, 997. A weak ridge builds south over North and South Utsire and Viking on Saturday and Sunday. Low in Fitzroy becomes slow moving but drifts into Biscay on Sunday with strengthening winds likely for North Sea Areas. Strong winds expected in Forth, Cromarty and Fair Isle from Saturday afternoon until later Sunday, further strong winds likely on Sunday afternoon in Southern North Sea Areas as frontal trough moves north
Niton
Slow moving, complex low system over the UK and Scandinavia, with a Low centre 1000 Dogger and Humber later Thursday. Low centre weakens and moves southeast into German Bight early Friday, a second Low centre 1004 west of Shannon and Rockall by early on Friday will deepen and move southeast, expected over Fitzroy by late on Friday, 997. Low becomes slow moving but drifts into Biscay on Sunday with strengthening winds likely for most sea areas. Strong winds expected for Thursday evening in Thames and Dover until late Evening. Strong winds likely for western Shannon and Sole and Fitzroy on Saturday, with gales possible in western Fitzroy for a time. Strong Winds continuing in most areas except Wight, Dover and Thames on Saturday and Sunday with a high chance of gales at times for Fitzroy and Biscay
Portpatrick
A slow moving, complex low system over the UK and Scandinavia, with a Low centre 1000 Dogger and Humber later Thursday. Low centre weakens and moves southeast into German Bight early Friday. A second Low centre 1004 west of Shannon and Rockall by early on Friday will deepen and move southeast, expected over Fitzroy by late on Friday, 997. Low becomes slow moving but drifts into Biscay on Sunday, with strengthening winds likely for most sea areas. Weak low 1012 forms in SE Iceland on Sunday afternoon and moves southwest into Bailey in the evening. Strong winds expected for Thursday evening and Friday in Rockall, Shannon and Bailey. The stronger winds will say south in Lundy, Fastnet and Shannon on Saturday and Sunday, with stronger winds in Fair Isle too on Sunday
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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