Y Tywydd Rhagolwg Estynedig

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Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

Map of extended outlook areas

Map Key

  • dark blue Niton
  • purple Cullercoats
  • dark green Portpatrick

Extended Outlooks 1800 UTC Tue 23 Sep to 1800 UTC Fri 26 Sep Issued by the Met Office, on behalf on the Maritime and Coastguard Agency, at 212300 UTC

  1. Niton

    High pressure centred north of the Azores on Tuesday evening, with ridge extending east towards southwest UK. The high transferring east across Biscay into western France by Friday, with ridge over southern UK. Trough of low pressure extending southeast from Iceland over the North Sea on Tuesday evening, with a low centre, around 1001, forming near sea area Fisher for a time on Wednesday, before moving away east on Thursday. New low developing west of Iceland on Wednesday, deepening and moving east into the Norwegian Sea by Friday evening, near 960. Occasional strong northeast winds are expected to affect the south of Fitzroy on Tuesday evening, are expected to persist through the day on Wednesday, before decreasing through Thursday. Occasional strong southwest winds are expected to affect the north of Irish Sea and Shannon at times on Thursday and Friday

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  2. Cullercoats

    High pressure centred north of the Azores on Tuesday evening, with ridge extending east towards southwest UK. The high transferring east across Biscay into western France by Friday, with ridge over southern UK. Trough of low pressure extending southeast from Iceland over the North Sea on Tuesday evening, with a low centre, around 1001, forming near sea area Fisher for a time on Wednesday, before moving away east on Thursday. New low developing west of Iceland on Wednesday, deepening and moving east into the Norwegian Sea by Friday evening, near 960. Strong northwest winds are expected to develop over North Sea areas on Wednesday, before easing for a time during Thursday. However, further strong west to southwest winds are expected to extend to sea areas north of 53 north on Friday, with gale to severe gale at times, north of 60 north

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  3. Portpatrick

    High pressure centred north of the Azores on Tuesday evening, with ridge extending east towards southwest UK. The high transferring east across Biscay into western France by Friday, with ridge over southern UK. Trough of low pressure extending southeast from Iceland over the North Sea on Tuesday evening, with a low centre, around 1001, forming near sea area Fisher for a time on Wednesday, before moving away east on Thursday. New low developing west of Iceland on Wednesday, deepening and moving east into the Norwegian Sea by Friday evening, near 960. Occasional strong northwest winds developing Fair Isle and Faeroes on Wednesday, with strong southwest winds extending to Bailey, SE Iceland later Wednesday. Strong southwest to west winds extending to all areas north of 55 north, with gale to severe gale at times north of 60 north, on Thursday and Friday

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Last Updated at 23:44 UTC on Sunday 21 September