Following record-breaking temperatures in the UK, the Met Office has issued yellow weather warnings for thunderstorms, heavy rain, and hail across parts of south-west England and much of Wales. These warnings are valid from 3pm to midnight and could lead to potential damage from lightning, transport disruptions, and localized flooding. Tuesday marked the hottest May day on record for both England and Wales, with temperatures soaring to 35.1°C at Kew Gardens and 32.9°C in Cardiff's Bute Park. The extreme heat has prompted a significant increase in public inquiries about heat safety, with NHS England noting over 20,000 visits to its heatstroke advice pages on Bank Holiday Monday alone. Tragically, several individuals, including teenagers and a man in his 60s, have lost their lives after encountering dangers in open water, underscoring the risks associated with swimming during heatwaves. As a response, health officials have extended heat health alerts, maintaining amber alerts for several regions, including London, until Thursday at 5pm, urging vulnerable individuals to exercise caution during this period of extreme weather.