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 Mon 26 Sep to 1800 UTC Thu 29 Sep Issued by the Met Office, on behalf of the Maritime and Coastguard Agency, at 242300 UTC

  1. Niton

    Low pressure centred southern Ireland 1007 with high pressure across eastern Europe. During Monday night this low will steadily deepen and move northwards across Scotland. A ridge of high pressure will extend eastwards from Azores across southern Fitzroy and across Biscay. During Tuesday an area of high pressure centred 100 miles west of Fitzroy 1032 at midday will build across much of Niton. By midday Wednesday the high is expected to be centred Biscay 1032 before continuing to move eastwards to reach the Alps by early Thursday. A ridge will extend westwards across Biscay and Fitzroy. During Thursday little overall change is expected. During Monday night and through Tuesday any strong winds are likely to be restricted to waters north of 50 North. On Wednesday there is a risk of gales affecting Sole and Shannon in the morning, and on Thursday there is currently thought to be a risk of westerly or southwesterly gales affecting Shannon during the morning period

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  2. Cullercoats

    Low pressure centred southern Ireland 1007 with high pressure across eastern Europe. During Monday night this low will steadily deepen and move northwards across Scotland and onto the Norwegian Sea 989 by the end of Tuesday. Confidence remains low concerning the depth, track and timing of this development. On Wednesday and Thursday a broad westerly airflow will cover the UK and Cullercoats areas, with the likelihood of areas of low pressure tracking eastwards from Iceland to the Norwegian Sea. During Tuesday southerly gales look set to develop across Forties and Dogger and then extend north and east during the morning. North of 56 North westerly gales will follow and persist overnight. These gales easing by Wednesday afternoon. Later in the day further gales may develop across Dogger, German Bight and Humber, before easing overnight. Currently gales are not expected during Thursday

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  3. Portpatrick

    Low pressure centred southern Ireland 1007 with high pressure across eastern Europe. During Monday night this low will steadily deepen and move northwards across Scotland and onto the Norwegian Sea 989 by the end of Tuesday. Confidence remains low concerning the depth, track and timing of this development. By midday Wednesday a trough is expected to extend westwards from just north of Viking across the Faeroes Islands and northern Bailey. On Thursday this trough will move little but another Atlantic low is expected to track east to be centred Rockall in the morning and then Malin 1003 by midday. Another low will follow to lie just west of Rockall 1005 by evening. During Tuesday morning gales are expected across Rockall, Hebrides and Bailey then extending to Fair Isle in the afternoon. Winds easing overnight. Currently no further gales are expected during the remainder of Wednesday and during Thursday

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Last Updated at 23:43 UTC on Saturday 24 September