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yellow Warnings have been issued for the United Kingdom

Extended Outlook

Extended outlook forecast

Issued: 2032 on Thu 18 Sep 2014 UTC

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

Valid from 2100 on Sat 20 Sep 2014 UTC until 2100 on Tue 23 Sep 2014 UTC

Cullercoats

Large high expected Rockall 1026 late Saturday, ridge extending north to Iceland, east to southwest North Sea, south to Iberia. High slowly transfers southeast with little change, expected Netherlands by late Monday, ridge extending to Sole. Meanwhile, low expected Denmark Strait 986 by late Sunday. Through Tuesday, ridge Netherlands to Sole declines. Complex low pressure remains slow-moving over Norwegian Sea. New Atlantic low deepens as it moves east, expected Rockall 1001 midday Tuesday, Fair Isle 998 late Tuesday. Fair Isle, strong winds moderating Sunday but further strong winds Monday and Tuesday with risk gales later. Other areas, strong winds at times all areas late Saturday and Sunday, with gales for a time Sunday South Utsire, Fisher, German Bight. Winds moderating west of 03 east by early Monday, other areas later Monday but further strong winds, risk gales in Viking, North Utsire late Monday, and occasional strong winds all other areas north of 53 north Tuesday

Niton

Large high expected Rockall 1026 late Saturday, ridge extending north to Iceland, east to southwest North Sea, south to Iberia. High slowly transfers southeast with little change, expected Netherlands by late Monday, ridge extending to Sole. Meanwhile, low slow-moving west Fitzroy late Saturday, moving away west and filling Sunday. New low developing Trafalgar 1012 Monday and Tuesday. Through Tuesday, ridge Netherlands to Sole declines. Complex low pressure remains slow-moving over Norwegian Sea. New Atlantic low deepens as it moves east, expected Rockall 1001 midday Tuesday, Fair Isle 998 late Tuesday. By same time, ridge extends through central Atlantic to Iceland and east to southern England. Thames, Dover, Wight, Portland, Plymouth, occasional strong winds Sunday to early Monday. Biscay, Fitzroy, Sole, Lundy, Fastnet, Irish Sea, Shannon occasional strong winds except in Biscay late Saturday, moderating for a time early Sunday but further strong winds in Biscay, Fitzroy, Irish Sea and Shannon Monday and Tuesday, with risk gales near Cape Finisterre

Portpatrick

Large high expected Rockall 1026 late Saturday, ridge extending north to Iceland, east to southwest North Sea, south to Iberia. High slowly transfers southeast with little change, expected Netherlands by late Monday, ridge extending to Sole. Meanwhile, low expected Denmark Strait 986 by late Sunday. Through Tuesday, ridge Netherlands to Sole declines. Complex low pressure remains slow-moving over Norwegian Sea. New Atlantic low deepens as it moves east, expected Rockall 1001 midday Tuesday, Fair Isle 998 late Tuesday. By same time, ridge expected to extend through central Atlantic to Iceland and east to southern England. Fair Isle, northeast Faeroes strong winds moderating Sunday. Lundy, Fastnet, Irish Sea, Shannon, occasional strong winds late Saturday, moderating for a time early Sunday but further strong winds in Irish Sea and Shannon Tuesday. All other areas, strong winds developing through Sunday, persisting Monday and Tuesday. Risk gales Bailey, Faeroes, Southeast Iceland Sunday and Rockall, Malin, Hebrides, Bailey, Faeroes Tuesday

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.

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