Y Tywydd Rhagolwg Estynedig

Gosodiadau
Iaith

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 Thu 25 Sep to 1800 UTC Sun 28 Sep Issued by the Met Office, on behalf on the Maritime and Coastguard Agency, at 232300 UTC

  1. Niton

    This period will see a succession of lows tracking eastwards from Iceland into the Arctic Ocean, while the Azores high is expected to remain dominant across much of the Niton area throughout, with pressure near 1025. A major low with central pressure near 970 is expected near Iceland late Thursday, deepening to near 955 by midday Friday in the Arctic Ocean. A second main low is expected into Iceland by late Saturday, finishing the period in Norwegian Basin near 980. Much of the Niton area will see no hazardous winds through this period, although strong winds are expected at first north of 50 North, with a risk of gales in Shannon. Winds will become non-hazardous in all Niton areas later Friday, persisting through the weekend aside from a risk of further strong winds for a time in Shannon on Saturday

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  2. Cullercoats

    This period will see a north-south split in prevailing conditions, with a succession of lows tracking eastwards from Iceland into the Arctic Ocean, while an area of high pressure dominates over continental Europe. A major low with central pressure near 970 is expected near Iceland late Thursday, deepening to near 955 by midday Friday in the Arctic Ocean. With this first low continuing eastwards into northern Scandinavia on Saturday, a second is expected into Iceland by late Saturday, finishing the period in Norwegian Basin near 980. Much of the Cullercoats area starts this period with a risk of occasional strong winds, however gales are likely in Fair Isle late Thursday, with the risk spreading to all areas north of 58 North into Friday as gusts perhaps touch severe gale in Fair Isle. Winds will ease generally into the weekend, with no hazardous winds south of 55 North, as gales gradually give way to strong winds north of 58 North

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  3. Portpatrick

    This period will see a north-south split in prevailing conditions, with a succession of lows tracking eastwards from Iceland into the Arctic Ocean, while an area of high pressure dominates in the extreme south. A major low with central pressure near 970 is expected near Iceland late Thursday, deepening to near 955 by midday Friday in the Arctic Ocean. A second main low is expected into Iceland by late Saturday, finishing the period in Norwegian Basin near 980. Much of the Portpatrick area starts this period with gales, severe north of 57 North and with a risk of storm-force gusts in Bailey, Faeroes, Southeast Iceland. A similar pattern is retained into Friday, although winds will ease south of 53 North to become non-hazardous. The strongest winds will ease in the north into the weekend, although gales are still likely, perhaps briefly severe, especially in Bailey, Faeroes, Southeast Iceland, while winds remain non-hazardous in the far south

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Last Updated at 23:41 UTC on Tuesday 23 September