Coast and sea

Extended outlook

Issued at: .

For the period to .

Extended outlook map

Cullercoats

On Monday evening, a weak low pressure area, 1004, lies over Forties, extending across much of the North Sea. At the same time another weak low, 1005, lies just to the west of Iceland. During Tuesday the North Sea low moves slowly northwards towards Shetland before moving northwest across the Faeroes on Wednesday. Thereafter weakening and dissipating at the expense of the Icelandic low that moves slowly southwards and then southeastwards on Tuesday and Wednesday to lie across the north of the UK. This low then moves northwards to be located near the Northern Isles, 998, by Thursday. Throughout the period, high pressure is maintained across, or near to the Azores, with a ridge of high pressure extending towards Biscay. No gales are expected across Cullercoats during the period. However, strong winds may develop in Humber and Thames on Wednesday night, perhaps extending to Dogger, Fisher and German Bight on Thursday

Niton

On Monday evening, a weak low pressure area, 1004, lies over Forties, extending across much of the North Sea. At the same time another weak low, 1005, lies just to the west of Iceland. During Tuesday the North Sea low moves slowly northwards towards Shetland before moving northwest across the Faeroes on Wednesday. Thereafter weakening and dissipating at the expense of the Icelandic low that moves slowly southwards and then southeastwards on Tuesday and Wednesday to lie across the north of the UK. This low then moves northwards to be located near the Northern Isles, 998, by Thursday. Throughout the period, high pressure is maintained across, or near to the Azores, with a ridge of high pressure extending towards Biscay. No gales are expected across Niton during the period. However, strong winds may develop in Sole, Fastnet and Shannon on Monday night. A further period of strong winds is likely for northern Niton areas during Wednesday and early Thursday

Portpatrick

On Monday evening, a weak low pressure area, 1004, lies over Forties, extending across much of the North Sea. At the same time another weak low, 1005, lies just to the west of Iceland. During Tuesday the North Sea low moves slowly northwards towards Shetland before moving northwest across the Faeroes on Wednesday. Thereafter weakening and dissipating at the expense of the Icelandic low that moves slowly southwards and then southeastwards on Tuesday and Wednesday to lie across the north of the UK. This low then moves northwards to be located near the Northern Isles, 998, by Thursday. Throughout the period, high pressure is maintained across, or near to the Azores, with a ridge of high pressure extending towards Biscay and Greenland. No gales are expected across Portpatrick during the period. However, strong winds may develop in Fastnet and Shannon on Monday night. Further strong winds likely develop across southern Portpatrick areas and South East Iceland on Wednesday and 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.

Marine forecasts disclaimer

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