Met Office

Extended outlook

2100 UTC Sunday 21 October to 2100 UTC Wednesday 24 October 2018

Issued by the Met Office, on behalf of the Maritime and Coastguard Agency, at 192021 UTC

Cullercoats

This period will be characterised by the gradual progression of an intense Atlantic high. This feature will be in the Central Atlantic, 1043 late Sunday, coming to lie off western Ireland by the end of the period, having declined slightly to near 1040. This anticyclone is generally expected to hold low pressure features well to the north, although a new low should develop over Scandinavia to end the period, perhaps deepening 985 here to end Wednesday. Near gales are expected north of 57 North late Sunday, perhaps gale at times in Fair Isle. These should intensify and become widespread through Monday, with gales north of 54 North, perhaps severe at times in northwestern Cullercoats later. All but English Channel Cullercoats areas are then at risk of gales Tuesday, perhaps severe for a time around 56 North, before a general easing is expected from the west through Wednesday, although near gales possibly surviving in the far east

Niton

This period will be characterised by the gradual progression of an intense Atlantic high. This feature will be in the Central Atlantic, 1043 late Sunday, before moving to lie off northwestern Niton by the end of the period, having declined slightly to near 1040. This high is generally expected to hold low pressure features well to the north throughout the four days. Near gales are expected in Fitzroy late Sunday, whilst strong winds are possible across English Channel Niton areas. These are likely to intensify through Monday, with gales or perhaps briefly severe gales in the far south of Fitzroy. Whilst nearly all other areas should see no hazardous winds, gales are also possible across Thames. A gradual easing of winds is then expected in Fitzroy and Thames over the final two days of the period, with winds remaining generally light elsewhere

Portpatrick

This period will be characterised by the gradual progression of an intense Atlantic high. This feature will be in the Central Atlantic, 1043 late Sunday, coming to lie near Shannon by the end of the period, having declined slightly to near 1040. This high is generally expected to hold low pressure features well to the north, although a new low should develop over Scandinavia to end the period. Gales are expected north of 57 North late Sunday, intensifying and become more widespread through Monday. Gales are then expected north of 55 North, with severe gales possible for areas around 60 North, perhaps storm for a time in Bailey. A general easing of wind strengths then follows Tuesday, with no hazardous winds by the end of the day in both northern and southern Portpatrick. However gales perhaps surviving in Hebrides, and Bailey. Winds then easing further Wednesday, although further gales may affect the extreme northwest later