Coast and sea
Issued at: .
For the period to .
Extended outlook map
Cullercoats
A ridge extends from high 1025 west of Madeira to high 1028 southern Sweden Saturday evening. The ridge across the southeastern UK will weaken as high over Sweden declines southeast and high near Madeira weakens Sunday. During this time low 52n 016W moves towards Fitzroy as the trough to its north moves across the Norwegian Basin Sunday. This low continues south, into Iberia Monday. A further high 1033 42N 048W will move over the Azores Monday, while extending a ridge northeast into the UK. This high will become slow moving over the Azores as the ridge over the UK moves away to the southeast Tuesday. Low 989 58N 067W deepens 968 as it moves towards the Denmark Strait Sunday and Monday. Low 996 51N 035W will develop on the front associated with this low Monday night, deepening 980 as it passes north to the west of the UK. No gales are expected throughout this period
Niton
A ridge extends from high 1025 west of Madeira to high 1028 southern Sweden Saturday evening. The ridge across the southeastern UK will weaken as high over Sweden declines southeast and high near Madeira weakens Sunday. During this time low 52n 016W moves towards Fitzroy as the trough to its north moves across the Norwegian Basin Sunday. This low continues south, into Iberia Monday. A further high 1033 42N 048W will move over the Azores Monday, while extending a ridge northeast into the UK. This high will become slow moving over the Azores as the ridge over the UK moves away to the southeast Tuesday. Low 989 58N 067W deepens 968 as it moves towards the Denmark Strait Sunday and Monday. Low 996 51N 035W will develop on the front associated with this low Monday night, deepening 980 as it passes north to the west of the UK. Gales reach Shannon at the end of this period
Portpatrick
A ridge extends from high 1025 west of Madeira to high 1028 southern Sweden Saturday evening. The ridge across the southeastern UK will weaken as high over Sweden declines southeast and high near Madeira weakens Sunday. During this time low 52n 016W moves towards Fitzroy as the trough to its north moves across the Norwegian Basin Sunday. This low continues south, into Iberia Monday. A further high 1033 42N 048W will move over the Azores Monday, while extending a ridge northeast into the UK. This high will become slow moving over the Azores as the ridge over the UK moves away to the southeast Tuesday. Low 989 58N 067W deepens 968 as it moves towards the Denmark Strait Sunday and Monday. Low 996 51N 035W will develop on the front associated with this low Monday night, deepening 980 while passing north to the west of the UK. Gales push east across the north Monday and south Tuesday
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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