Coast and sea
Issued at: .
For the period to .
Extended outlook map
Cullercoats
High 1018 expected over Scandinavia on Monday evening will gradually drift east as it builds during the forecast period. Multi-centred Atlantic low expected southeast of Greenland on Monday evening, with primary centre 953 and secondary centre 977 just west of Rockall. New secondary centre develops on Monday night, expected 974 over Sole, before moving north and expected 966 over Fastnet by midday on Tuesday. Low then moves northwest and expected 964 west of Rockall by midday on Wednesday, before sinking southeast again and expected 964 over Shannon by midday on Thursday. Strong winds across the North Sea on Monday evening will strengthen overnight, with gales developing in the central North Sea and Fair Isle on Tuesday. Gales then ease for most areas apart from Fisher during Wednesday, however strong winds remaining into Thursday. Widespread fog is not expected
Niton
High 1018 expected over Scandinavia on Monday evening will gradually drift east as it builds during the forecast period. Multi-centred Atlantic low expected southeast of Greenland on Monday evening, with primary centre 953 and secondary centre 977 just west of Rockall. New secondary centre develops on Monday night, expected 974 over Sole, before moving north and expected 966 over Fastnet by midday on Tuesday. Low then moves northwest and expected 964 west of Rockall by midday on Wednesday, before sinking southeast again and expected 964 over Shannon by midday on Thursday. Strong winds and isolated gales expected in Portland, Plymouth, Biscay, Fitzroy, Lundy and Irish Sea on Monday night, spreading into Fastnet and Shannon during Tuesday. Gales and strong winds ease in the north and east of the region for a time later Tuesday, before further strong winds and isolated gales spread northeast Wednesday, easing again for all but Fitzroy later Wednesday. Further gales arrive from southwest Thursday
Portpatrick
High 1018 expected over Scandinavia on Monday evening will gradually drift east as it builds during the forecast period. Multi-centred Atlantic low expected southeast of Greenland on Monday evening, with primary centre 953 and secondary centre 977 just west of Rockall. New secondary centre develops on Monday night, expected 974 over Sole, before moving north and expected 966 over Fastnet by midday on Tuesday. Low then moves northwest and expected 964 west of Rockall by midday on Wednesday, before sinking southeast again and expected 964 over Shannon by midday on Thursday. Strong winds and gales are expected across the north of the region throughout, with further strong winds and gales expected in the south on Tuesday. Conditions ease in the south of the region for a time later Tuesday, before further strong winds and isolated gales spread northeast on Wednesday, easing in the evening and then another wave of gales arrive from the southwest on Thursday
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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