Wales Thunderstorm Warning: Power Cuts & Flooding Risk

A yellow warning for thunderstorms has been issued by the Met Office across Wales, excluding Flintshire, effective until 23:59 BST on Wednesday. This severe weather alert follows an official heatwave declaration, during which Wales recorded its hottest May day on Tuesday. The Met Office has cautioned about potential power outages, localized flooding, and challenging driving conditions. There is also a possibility of disruptions and cancellations to public transport services, including buses and trains. The storms carry risks of damage to buildings from floodwater, lightning strikes, hail, and strong winds. Earlier on Wednesday afternoon, high voltage faults during thunderstorms in Pembrokeshire and Carmarthenshire left 1,530 customers without power. National Grid reported 138 customers were still without power at one point. Transport for Wales confirmed lightning strikes damaged the signaling system at Clarbeston Road in Pembrokeshire, leading to potential service delays of up to 45 minutes.