Weather system and wind warnings
A weather system containing the remnants of Hurricane Isaias is forecast to bring gales, heavy rain, and a surge of warm air to parts of the UK. While the center of the low-pressure system and its most significant impacts will remain hundreds of miles from UK shores, north-west Scotland will experience a spell of gales.
The Met Office has issued a yellow warning for parts of the Highlands and Western Isles, with gusts potentially touching 70mph (113km/h) in places. The warning is valid on Wednesday from 10:00 until 19:00 BST and warns of moderate impacts, including possible disruption to rail, air, and ferry transport, road and bridge delays for high-sided vehicles, and short-term power cuts. Widespread gusts of 50-60mph are likely, with 70mph possible for exposed coasts and hills around the middle of the day. Shetland is anticipated to see 50mph gusts with a lower risk of disruption, while 40mph gusts are possible in other parts of Scotland, Northern Ireland, northern England, and north-west Wales.
Rain and hurricane remnants
Heavy rain will affect parts of Scotland and Northern Ireland, with the heaviest rainfall in the north and west. Patchy rain may also spread into north-west England and north Wales, though much of England and Wales will remain largely dry with sunny spells after early mist clears.
Hurricane Isaias, the first Atlantic hurricane of the season, made landfall in the southern United States before weakening rapidly and ceasing to be a hurricane. Its remnants delivered heavy rain across the eastern side of North America before emerging over the Atlantic, where a powerful jet stream scooped them up and developed a new area of low pressure undergoing explosive cyclogenesis, or a weather bomb.
Surge of warmth and cooler changes
South-westerly winds driven by the low-pressure system will push temperatures widely into the mid to high-teens Celsius, potentially peaking at 20C in southern England and reaching 22C in East Anglia on Thursday. This leaves most places 2-4C above the mid-October average.
Following this warmth, a weather front will move southwards bringing rain across Scotland, Northern Ireland, northern England, and north Wales. Chillier and drier conditions will spread southwards through Friday and over the weekend, bringing temperatures closer to the seasonal norm, brisk winds on eastern coasts, and a chance of overnight frost.