Y Tywydd Rhagolwg Estynedig
Mae'r cynnwys hwn ar gael yn Saesneg yn unig.
Extended Outlooks 1800 UTC Sat 10 Oct to 1800 UTC Tue 13 Oct Issued by the Met Office, on behalf of the Maritime and Coastguard Agency, at 082300 UTC
On Saturday evening an Atlantic low, 996, is centred over south Fitzroy. This will move east to be centred Porto, 1004 by midday Sunday. The low then moves southeast and continues to fill through the rest of the period, centred in the Mediterranean late Tuesday. Meanwhile the north of the Niton region is influenced throughout the forecast period by a strong ridge of high pressure extending east across the North Sea and the UK from a large Scandinavian anticyclone. A complex area of low pressure will move east to lie to the west of the UK by late Tuesday. Occasional strong winds in Fitzroy and Biscay on Monday evening. The strong winds will become more widespread in Fitzroy with isolated near gales late on Sunday. Strong winds will ease in Fitzroy early on Tuesday, although occasional strong winds will develop in the English Channel from early TuesdayGo to top of page
A large anticyclone across Scandinavia will dominate the synoptic situation across the Cullercoats region throughout the forecast period, extending a strong ridge of high pressure east across the North Sea and the UK. Meanwhile, an area of low pressure will move slowly west to east across Spain through the period. A second low pressure to the south of Iceland on Saturday evening will move northeastwards and then clear to the north late on Monday. A complex area of low pressure will move east across the Atlantic to lie to the west of the UK by Tuesday evening. Occasional strong winds will develop in North Sea areas from early Sunday. These will ease in Tyne, Dogger, Fisher, German Bight, Humber, Thames by Sunday evening and then in Viking, North Utsire, South Utsire, Forties, Cromarty, Forth Monday on evening continuing in Fair Isle. Occasional strong winds in the English Channel from early TuesdayGo to top of page
On Saturday evening an Atlantic low, 996, is centred over Fitzroy with a second low, 1008, to the south of Iceland. A ridge of high pressure lies in between. The southern low will move east to be centred over Porto midday Sunday, 1004, and will continue to fill as it moves southeast through the period becoming centred Mediterranean late Tuesday. The northern low will move northeastwards, centred over Iceland, 1003, midday on Sunday and will then clear north late on Monday allowing the ridge of high pressure to strengthen across the Portpatrick area. A complex area of low pressure will move east to lie west of the UK by late Tuesday. Strong winds Rockall, Hebrides, Bailey, Faeroes, Southeast Iceland on Saturday evening, becoming occasional on Sunday morning and spreading to Fair Isle. Strong winds becoming widespread across Bailey, Faeroes, Southeast Iceland early Tuesday also spreading to Shannon and Rockall Tuesday afternoonGo to top of page
Last Updated at 23:36 UTC on Thursday 8 October