Y Tywydd Rhagolwg Estynedig

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Map of extended outlook areas

Map Key

  • dark blue Niton
  • purple Cullercoats
  • dark green Portpatrick

Extended Outlooks 1800 UTC Mon 24 Jul to 1800 UTC Thu 27 Jul Issued by the Met Office, on behalf of the Maritime and Coastguard Agency, at 222300 UTC

  1. Niton

    On Monday evening a weak area of low pressure , 1006, is centred over Germany, bringing a weak cyclonic flow the far east of the area. An area of high pressure, 1024, sits east of Iceland, and a ridge of high pressure extending up from the Azores affects much of the area. By Tuesday afternoon the ridge of high pressure will have declined and a series of weak low pressure centres in the Atlantic will bring a series of fronts into the north of the area. These fronts will slowly move eastwards through the English Channel through Wednesday, with a weak ridge of high pressure re-establishing itself by across the area by Thursday. No gales are currently expected to affect waters in the Niton area through the forecast period, but some strong winds across Biscay on Monday evening, easing by midnight. Winds may also be strong for a time across northern areas on Wednesday, easing overnight

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  2. Cullercoats

    On Monday evening a weak area of low pressure, 1006, is centred over Germany. An area of high pressure, 1024, sits east of Iceland, and a ridge of high pressure extending up from the Azores affects the far south west of the area. By Tuesday evening little change is expected, though by Wednesday a series of weak low pressure centres in the Atlantic will bring a series of fronts into the west of the area. These fronts will slowly move eastwards into the North Sea through Thursday, with a weak ridge of high pressure building in to the west of the area by Thursday evening. No gales are currently expected to affect waters in the Cullercoats area through the forecast period, but winds may be strong at times, especially in the south of the North Sea during Monday night and Tuesday

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  3. Portpatrick

    On Monday evening an area of high pressure, 1024, sits east of Iceland, and a ridge of high pressure extending up from the Azores affects the south west of the area. By Tuesday afternoon the ridge of high pressure will have declined and a series of weak low pressure centres in the Atlantic will bring a series of fronts into the west of the area. These fronts will slowly move eastwards, out of all but the far north of the Portpatrick area through Wednesday evening, with a weak ridge of high pressure building again in to the south of the area during Thursday, and a front still affecting the far north. Generally light or moderate winds are expected across the Portpatrick area for much of the period. However, Wednesday afternoon winds will increase to gale force at times around Rockall and Bailey, these only slowly easing during Thursday morning. Winds will also increase SE Iceland to near gales during Wednesday, easing overnight

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Last Updated at 23:47 UTC on Saturday 22 July