The UK is experiencing its hottest day of the year with temperatures reaching 32°C, and a potentially more extreme heatwave is expected around August 10-15, with temperatures possibly hitting the mid to high 30°Cs. Concurrently, the Met Office has issued yellow warnings for thunderstorms across various regions, with risks of flooding and power outages. In the US, several regions like Myrtle Beach, Baltimore, and Nebraska are also facing extreme heat and humidity with heat indices reaching up to 113°F, and advisories and warnings in place. These areas are also anticipating pop-up showers and thunderstorms, with some regions at risk for severe storms producing damaging winds and hail.