Use my current location crosshair

Extended Outlook

Extended outlook forecast

Issued: 2039 on Wed 27 Aug 2014 UTC

Issued by the Met Office, on behalf of the Maritime and Coastguard Agency

Valid from 2100 on Fri 29 Aug 2014 UTC until 2100 on Mon 01 Sep 2014 UTC

Cullercoats

Low 995 centred over northwest Scotland on Friday evening will drift slowly north and fill, to be centred over Fair Isle by midday Saturday then losing its identity by midday Sunday. A further large but filling area of low pressure is expected to move northeast across Iceland on Monday. A ridge of high pressure is expected over the western English Channel by midday Saturday, extending across much of England and Wales by midday Sunday. High pressure is then likely to extend northeast through central and southern parts of the North Sea on Monday, but with a trough expected to move southwest through German Bight during the day. Occasionally strong winds over Viking, North Utsire, and Fair Isle on Friday evening will moderate on Saturday morning. Further strong winds are likely in Fair Isle early on Monday, these then transferring east through Viking and North Utsire during the day

Niton

Low 995 centred over northwest Scotland on Friday evening will drift slowly north and fill, to be centred over Fair Isle by midday Saturday then losing its identity by midday Sunday. Anticyclone 1021 over Biscay and Fitzroy is expected to build northwards to be centred to the west of Brittany by midday Sunday and over Southwest England on Monday. Associated ridge of high pressure is forecast to move east into Sole and Shannon by midday Saturday, and into England and Wales during Sunday. Pressure is expected to remain generally low across the much of the Iberian Peninsular throughout the forecast period. Strong winds over Shannon on Friday evening will moderate by midnight Saturday but may become strong again for a time on Sunday morning. Elsewhere, winds are expected to remain below strong limits in the Niton area throughout this forecast period

Portpatrick

Low 995 centred over northwest Scotland on Friday evening will drift slowly north and fill, to be centred over Fair Isle by midday Saturday then losing its identity by midday Sunday. A further large but filling area of low pressure is expected to move northeast across Iceland on Monday. A ridge of high pressure is forecast to move east into Shannon and Rockall on Saturday afternoon, and be lying through much of England and Wales by midday Sunday. By the middle of Monday, the ridge is likely to cover much of the Portpatrick area south of Hebrides, with frontal troughs affecting more northern parts. Winds are expected to strengthen through Shannon, Rockall, Bailey, and Southeast Iceland on Sunday morning, perhaps reaching near gale force for a time around midday in Bailey. Gales are likely to develop in Bailey and Southeast Iceland on Monday morning, perhaps extending east into Faeroes during the afternoon

Extended outlook overview

The extended outlooks are issued once a day, at 2300, GMT and cover the next 3 to 5 days.

For the extend outlooks the waters surrounding the British Isles are divided into three areas; Cullercoast, 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.

In the UK, the Maritime & Coastguard Agency (MCA) is responsible for the provision of Maritime Safety Information (MSI) to ships at sea, which includes the broadcast of warnings and forecasts. The Met Office initiates warnings and prepares routine forecasts for dissemination on behalf of the MCA.

Caution: The internet is not part of the Maritime Safety Information system and should never be relied upon as the only means to obtain the latest forecast and warning information. Access to the service may be interrupted or delayed from time to time, updates may also be delayed. Please refer to GMDSS services, INMARSAT SafetyNET or international NAVTEX for the latest information. When using these web pages, always check that the page on your screen is not from your cache. Use the Refresh or Reload button if in any doubt.