Coast and sea
Issued at: .
For the period to .
Extended outlook map
Cullercoats
Azores High 1030 stretches a ridge northeast over the British Isles on Monday while low pressure lies over Iceland. Low tracks east into the Norwegian Sea and gradually fills early Tuesday as the ridge continues to stretch over the British Isles. The ridge slips south late Tuesday as new low 976 develops near Iceland and extends a trough towards the British Isles. Low 981 moves southeast during Wednesday and the trough sweeps across the North Sea while the ridge stretches across Biscay. Low 981 lies over Bailey at midnight Thursday and moves over Fair Isle by midday Thursday. Gales are not expected. Strong winds late Monday for Viking, Forties, Cromarty, and Fair Isle, extending into S Utsire, Fisher, Dogger and German Bight early Tuesday before easing everywhere later. Winds become occasionally strong for most areas on Wednesday but ease across the southern North Sea by Thursday.
Niton
Azores High 1030 stretches a ridge northeast over the British Isles on Monday while low pressure lies over Iceland. Low tracks east into the Norwegian Sea and gradually fills early Tuesday as the ridge continues to stretch over the British Isles. The ridge slips south late Tuesday as new low 976 develops near Iceland and extends a trough towards the British Isles. Low 981 moves southeast during Wednesday and the trough sweeps across the North Sea while the ridge stretches across Biscay. Low 981 lies over Bailey at midnight Thursday and moves over Fair Isle by midday Thursday. Gales are not expected. Strong winds on Tuesday for Shannon will occasionally extend to Irish Sea, Lundy and Fastnet on Wednesday and Thursday. Strong winds are also possible at times on Wednesday for Thames, Dover and Wight.
Portpatrick
Azores High 1030 stretches a ridge northeast over the British Isles on Monday while low pressure lies over Iceland. Low tracks east into the Norwegian Sea and gradually fills early Tuesday as the ridge continues to stretch over the British Isles. The ridge slips south late Tuesday as new low 976 develops near Iceland and extends a trough towards the British Isles. Low 981 moves southeast during Wednesday and the trough sweeps across the North Sea while the ridge stretches across Biscay. Low 981 lies over Bailey at midnight Thursday and moves over Fair Isle by midday Thursday. Strong winds late Monday for Fair Isle will ease during Tuesday. Winds will become occasionally strong from the west for most areas on Tuesday, with a risk of gales on Wednesday for Rockall, Malin and Hebrides. Gales ease on Thursday but strong winds will continue for most areas away from the far north
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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