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Four UK weather issues as November ends on a chillier note
Video by Jo Farrow
Issued: 23rd November 2020 16:13
Updated: 23rd November 2020 16:27

Four UK weather issues as November ends on a chillier note

Colder air will be taking hold as the week goes on with a more autumnal feel to things as we see frost and also more widespread fog. However, it becomes drier in the NW finally and the winds will be very light.

Heavy rain

Western Scotland once again, it was very wet last week so the ground is pretty soggy and muddy. Northern Ireland and Cumbria also see a good deal of rain to start the week. This could lead to localised river and surface water flooding.

The frontal bands continue to feed in from the west, waving slightly north or south but resulting in heavy and persistent rain for NW parts of the UK. Rainfall totals of 25 to 80mm for western and SW Scotland and also Cumbria, that’s 1 to 3” of rain for Monday into Tuesday. Many other parts of the UK stay drier and the week becomes dry as pressure rises.

Explainer Video - How the air masses change this week once a distinct frontal boundary moves through. Tropical maritime air (orange/yellow ) replaced by returning Polar Maritime (greens).

Gales and gusts

The windiest weather and coastal gales will ease this evening for NW Scotland. Strong winds are forecast through the Irish Sea, the Isle of Man and Anglesey, the Pennines during Monday night. Behind the front, the winds fall light but continue from the SW for the Western Isles. As the winds over Wales back to a southerly there could be lee gusts for north Wales by Tuesday morning and by Tuesday lunchtime strong southerly winds for Co Down, Isle of Man, Solway Firth and up to Arran. Quite wild conditions through the Firth of Clyde before the front edges southwards. The distinct veer to a north-westerly post front will further highlight the change to chillier air.



Frost

Monday evening sees an early nip in the air for SE England and East Anglia. Cold start on Wednesday for Northern Ireland and Scotland, away from the breezier NW). Thursday morning noticeably colder for most of the UK, apart from SE England and similar on following mornings for the end of the month.

Fog

There has been some fog about this month but this could be the first widespread fog event of autumn for many, with weather warnings possible for the mornings later this week. As high pressure builds in, the winds will fall light and with lower temperatures and wet ground, the ingredients for radiation fog are there.

Some of this fog will be freezing, also could be dense and persistent. In places, it could linger past lunchtime which will add to the colder theme for later this week.

High pressure will settle our weather down here in the UK as low pressures are forced further south as the jetstream meanders over the eastern Atlantic. This brings unsettled weather to Portugal, Spain and the Mediterranean. 

Tags: Severe Weather  UK Weather

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