STORM Betty is expected to bring strong winds and trigger heavy rain in the second named storm in August.
Met Eireann has labeled the storm a low-pressure area, which has also prompted warnings in the UK.
Winds of 50 mph and torrential rain are expected to hit the Scots.
Jason Kelly, the Met Office’s chief meteorologist, said yesterday: “Friday and Saturday will see unseasonably wet and windy conditions across much of the UK.”
“While Storm Betty will have a greater impact in Ireland, exposed Irish Sea coasts in the UK could experience gusts in excess of 70mph, with around 50mph being more common.
“Storm Betty is also bringing some large accumulations of rain for this time of year, with some locations in Northern Ireland registering around 80mm of precipitation, although between 15 and 25mm on a larger scale is expected.”
“Similarly high accumulations could occur in parts of Scotland, particularly on higher ground.”
Betty is the second storm to be named in August, following Storm Antoni, which struck earlier this month.
This is the second time two storms have been named in August since naming was introduced in 2015, after Ellen and Francis in August 2020.
Heavy and thunderstorm-like rain spread across much of the UK last night.
A yellow weather warning for wind from 6pm yesterday through noon Saturday said people should be aware that the very strong and gusty winds associated with Storm Betty could disrupt transportation, travel and temporary infrastructure.
It includes south-west Scotland, the Lothian Borders, south-west England and Wales.
It said: “Storm Betty is expected to bring a swath of very strong and gusty winds to the Isles of Scilly early Friday evening and to move rapidly north across much of the western part of the UK overnight and Saturday morning.”
“The strongest winds blow along the south-southwest facing coasts, where gusts of 60 to 70 mph are possible, while gusts of 45 to 55 mph are possible elsewhere.”
Central, Tayside and Fife, Grampian, South West Scotland, Lothian Borders and Strathclyde are also on a yellow weather warning for rain from 3am until midday on Saturday.
Mr Kelly added: “While many thunderstorm warning areas may experience relatively little rain, some locations have the potential for around 20 to 40mm of rain within an hour and potentially around 40 to 60mm within three hours.”
“Large hail and frequent lightning pose additional threats to the likely overnight thunderstorms in eastern England.”
According to Met Office spokesman Graham Madge, the arrival of Storm Betty could lead to “quite intense thunderstorm activity with associated effects of hail, heavy rain and lightning strikes”.
He added: “Also, the way the anti-clockwise winds circulate around Storm Betty favors warm air being filtered from the continent into parts of southern and eastern England, and that warm air will be quite humid.”
“This will be a trigger for fairly intense thunderstorm activity across Hampshire, Dorset, north and east London, East Anglia and the East Midlands.”
It is expected that by Saturday morning “all of these weather systems will settle down completely, at least in the southern part of the UK” but Scotland “will still be affected to some extent by Storm Betty, which is expected to bring reasonably strong winds and heavy rain for some.” brings.” “, he added.
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