weather warning, weather warning uk, weather uk, weather forecast uk, thunder uk, thunderstorms Many areas will face monsoon conditions as torrential downpours set in across the UK. More than THREE INCHES of rain could fall in just 48 hours with widespread flash flooding expected as the worst thunderstorms since the 1960s hit. The freak storms will also bring strong winds, hail and lightning with much of the country warned to expect weather MAYHEM by Friday. It comes after Britain baked in the hottest day of the year so far today with the mercury hitting 79.3F (26.3C) in Gravesend, Kent. The Met Office warned that early forecasting models were giving ’cause for concern’ for Thursday. More