Coast and sea
Issued at: .
For the period to .
Extended outlook map
Cullercoats
A low complex and trough from Low 998 44N 035W to Low 975 Faeroes then Low 992 Barents Sea Tuesday evening. A further Low 998 56N 025W develops at this time. Low at the Faroes deepens to 977 Bailey Wednesday night before filling towards Northern Ireland. The Low west of this complex tracks southeast to reach Low 983 in the Celtic Sea Wednesday night before continuing east to Denmark where Low 974 by midday Friday. Low 998 44N 035W drifts slowly south across the Azores during this period. High 1020 northwest of the Canaries Tuesday evening remains almost stationary throughout this period. High 1024 extending from east of Nova Scotia to eastern Greenland Tuesday evening moves slowly northeast to reach High 1034 in the central North Atlantic Friday. Gales spread to Thames from Thursday afternoon and build across Fisher and Forties from the evening before spreading to all areas for a time Friday
Niton
A low complex and trough from Low 998 44N 035W to Low 975 Faeroes then Low 992 Barents Sea Tuesday evening. A further Low 998 56N 025W develops at this time. Low at the Faroes deepens to 977 Bailey Wednesday night before filling towards Northern Ireland. The Low west of this complex tracks southeast to reach Low 983 in the Celtic Sea Wednesday night before continuing east to Denmark where Low 974 by midday Friday. Low 998 44N 035W drifts slowly south across the Azores during this period. High 1020 northwest of the Canaries Tuesday evening remains almost stationary throughout this period. High 1024 extending from east of Nova Scotia to eastern Greenland Tuesday evening moves slowly northeast to reach High 1034 in the central North Atlantic Friday. Gales build over Plymouth, Fitzroy and Sole Wednesday night, spreading east and increasing to severe gale in the Channel and Western Approaches Thursday. These winds ease down early Friday
Portpatrick
A low complex and trough from Low 998 44N 035W to Low 975 Faeroes then Low 992 Barents Sea Tuesday evening. A further Low 998 56N 025W develops at this time. Low at the Faroes deepens to 977 Bailey Wednesday night before filling towards Northern Ireland. The Low west of this complex tracks southeast to reach Low 983 in the Celtic Sea Wednesday night before continuing east to Denmark where Low 974 by midday Friday. Low 998 44N 035W drifts slowly south across the Azores during this period. High 1020 northwest of the Canaries Tuesday evening remains almost stationary throughout this period. High 1024 extending from east of Nova Scotia to eastern Greenland Tuesday evening moves slowly northeast to reach High 1034 in the central North Atlantic Friday. Gales to severe gales north Tuesday evening spread to all except Irish Sea and Malin by early Thursday. These winds ease down from north from Thursday evening, clearing by early Friday
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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