Complex sentence: Despite the distance the flash and mushroom cloud from this groundburst are visible in Sheffield, adding to the panic, and people caught in the open are injured by flying debris as the blast blows out windows across the city.
Split into simpler sentences: Despite the distance the flash and mushroom cloud from this groundburst are visible in Sheffield, adding to the panic. People caught in the open are injured by flying debris as the blast blows out windows across the city.