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Extended outlook

2100 UTC Tuesday 23 October to 2100 UTC Friday 26 October 2018

Issued by the Met Office, on behalf of the Maritime and Coastguard Agency, at 212036 UTC

Cullercoats

During Tuesday evening and Wednesday a deep area of low pressure 976 will migrate eastwards from the Baltic Sea into Russia, whilst high pressure, centred 1038 to the west of Ireland, will decline to 1030. Low pressure 997 will move eastwards across Iceland. During Thursday the high pressure centre will retrogress westwards into the mid-Atlantic, while troughs of low pressure move southwards from Iceland to Scotland. Low pressure 1011 will form over France. During Friday high pressure 1040 will persist in the mid-Atlantic with low pressure 992 becoming centred over Scandinavia. During Tuesday evening and at first on Wednesday strong to gale northwest winds will affect the North Sea, decreasing to occasionally strong later Wednesday. Further occasionally strong winds are expected on Thursday, increasing to occasional gales in Fair Isle later. Occasional gales are expected to spread southwards into the North Sea on Friday

Niton

During Tuesday evening and Wednesday a deep area of low pressure 976 will migrate eastwards from the Baltic Sea into Russia, while a high pressure, centred 1038 to the west of Ireland, will decline to 1030. Low pressure 997 will move eastwards across Iceland. During Thursday the high pressure centre will retrogress westwards into the mid-Atlantic, while troughs of low pressure move southwards from Iceland to Scotland. Low pressure 1011 will form over France. During Friday high pressure 1040 will persist in the mid-Atlantic with low pressure 992 becoming centred over Scandinavia. During Tuesday evening and Wednesday occasionally strong winds are forecast in Thames, Biscay, Fitzroy and Irish Sea, but moderating later. Strong to gale winds will spread to West Sole and Shannon later Thursday. Strong winds are forecast in Atlantic sea areas on Friday with occasional gales in Fitzroy, Sole, Fastnet and Shannon

Portpatrick

During Tuesday evening and Wednesday a deep area of low pressure 976 will migrate eastwards from the Baltic Sea into Russia, while a high pressure, centred 1038 to the west of Ireland, will decline to 1030. Low pressure 997 will move eastwards across Iceland. During Thursday the high pressure centre will retrogress westwards into the mid-Atlantic, while troughs of low pressure move southwards from Iceland to Scotland. Low pressure 1011 will form over France. During Friday high pressure 1040 will continue in the mid-Atlantic with low pressure 992 becoming centred over Scandinavia. During Tuesday evening and Wednesday strong winds are forecast widely, except in Lundy, Fastnet and Shannon. Gales are possible in Hebrides, Fair Isle and Faeroes during Tuesday evening, and in Bailey and Southeast Iceland later Wednesday. Strong to gale winds will return to Atlantic sea areas during Thursday, and persist through Friday, becoming strong in Lundy and Irish Sea

Marine weather extended outlook for the next 3 to 5 days

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.

 

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.

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