Met Office

Extended Outlook Forecast

1800 UTC Wed 03 Sep until 1800 UTC Sat 06 Sep

Issued by the Met Office, on behalf of the Maritime and Coastguard Agency, at 012300 UTC

Portpatrick

Initially a trough of low pressure will cover Iceland, elsewhere a ridge of high pressure will dominate, extending southwestwards from a large anticyclone centred across Latvia. Thursday a new ridge extends northeastwards between Iceland and Scotland, from a large Atlantic anticyclone, and a new anticyclone becomes established by midday Friday between Iceland and Scotland, pressure 1025. Saturday this new anticyclone transfers southeastwards, becoming centred across the northern North Sea by midday, pressure 1025. Meanwhile Thursday a small weak low moves north, becoming centred at midday 48N 13W, pressure 1011. Friday the weak low drifts slightly west, and fills overnight. Saturday a new larger, weak, area of low pressure is currently forecast to become centred near 46N 11W. Wednesday evening isolated strong winds may occur across the north of the region. Friday strong winds will gradually develop across Southeast Iceland, persisting through Saturday. Also Saturday there is a chance of occasional strong winds across the far south of the Portpatrick region

Cullercoats

Wednesday evening a large anticyclone will dominate the synoptic situation across the Cullercoats region, with the high centred located across Latvia, pressure 1030. The anticyclone will remain slow moving, and pressure steady, through to Thursday; all the time extending a ridge of high pressure across the Cullercoats region. During Friday the anticyclone moves eastwards across Russia, but pressure remains high across the Cullercoats region as a new anticyclone builds to the north of Scotland. Saturday this new anticyclone transfers southeastwards, becoming centred across the northern North Sea by midday, pressure around 1025. Confidence is high that no gales will occur at any time during the forecast period across the Cullercoats region. There is a small chance of occasional strong winds across the southern North Sea through Saturday, mainly across sea areas Humber and Thames, and perhaps also across the English Channel

Niton

Throughout the forecast period high pressure will dominate the weather across the UK and the southern North Sea, while further south across the Niton region pressure remains lower; Wednesday evening a weak low pressure is expected centred across central Fitzroy, pressure 1012. Thursday this low moves slightly further north across sea area Fitzroy, 1011. Friday daytime the weak low drifts slightly west, and then fills overnight as a new low develops across southern Fitzroy. Saturday this larger, but still weak, low pressure is currently forecast to become centred near 46N 11W, pressure 1008. Confidence is high that no gales will occur at any time during the forecast period across the Niton region. There is a small chance of occasional strong winds across the southern North Sea through Saturday, mainly across sea areas Humber and Thames, and perhaps also across the English Channel


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