Weather Extended Outlook

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Map of extended outlook areas

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  • dark blue Niton
  • purple Cullercoats
  • dark green Portpatrick

Extended Outlooks 1800 UTC Wed 24 Aug to 1800 UTC Sat 27 Aug Issued by the Met Office, on behalf of the Maritime and Coastguard Agency, at 222300 UTC

  1. Niton

    Initially a ridge will stretch northeastwards, from a large Atlantic anticyclone, across the northwestern half of the UK. However the ridge weakens Wednesday night, leaving a small anticyclone close to Shetland by midday Thursday, 1021, pressure steady. Meanwhile a small area of low pressure develops across the English Channel, 1013 by midnight Wednesday, then 1011 by midday Thursday. Friday this small English Channel low fills, as the small anticyclone close to northeast Scotland moves away northeastwards, filling, and an Atlantic low approaches the UK. By midday Saturday low currently expected centred 49N 15W, 1003. Low may then move east, reaching western UK late Saturday, pressure around 1005, but confidence is low regarding this. Isolated strong to near gale force northerly winds possible Wednesday night across eastern Sole, and south Lundy and south Fastnet, abating Thursday. Near gale force southeast winds may develop across west Sole and southwest Shannon Friday night, quickly easing Saturday morning

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  2. Cullercoats

    A slack pressure pattern will predominate across the Cullercoats region throughout the forecast period. Initially a ridge of high pressure will stretch northeastwards, from a large Atlantic anticyclone, across the northwestern half of the UK. However the ridge weakens Wednesday night, leaving a small centre of high pressure close to Shetland by midday Thursday, 1021, pressure steady. Meanwhile a small area of low pressure develops across the English Channel, 1013 by midnight Wednesday, then 1011 by midday Thursday. Friday this small English Channel low fills, as the small anticyclone close to northeast Scotland moves away northeastwards, filling. Late Saturday an Atlantic low, pressure around 1005, may move across the west of the UK, but confidence is low regarding this. Confidence is high that no gales will occur across the Cullercoats region during the forecast period, with no strong winds expected either

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  3. Portpatrick

    At first low centred 58N 20W, 1000, expected midday Thursday 57N 20W, pressure steady, then moving east Friday while quickly filling. Initially a ridge extends northeastwards across the northwestern half of the UK, but by midday Thursday the ridge weakens, leaving a small anticyclone close to Shetland, 1021. This moves away northeastwards during Friday, filling, as a weak ridge temporarily builds across the southeastern half of the UK, and a new low approaches the UK from the west. By midday Saturday low currently expected centred 49N 15W, 1003. Low may then move east, reaching western UK late Saturday, pressure around 1005, but confidence is low regarding this. Isolated strong to near gale force northerly winds possible Wednesday night across southern Lundy and Fastnet, abating Thursday. Strong southwest winds then develop Thursday night across Rockall, perhaps transferring across Malin and Hebrides Friday morning, thereafter ceasing. Near gale force southeast winds may develop across southwest Shannon Friday night, quickly easing Saturday morning

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Last Updated at 23:39 UTC on Monday 22 August