"Disruption after 'thundersnow' hits Scotland
Police Scotland has reassured residents in Edinburgh after hundreds of people reported being woken by the sound of explosions. However, police said that what people were actually hearing was the phenomenon known as "thundersnow".
Two "extraordinarily loud" thunder claps were heard over the capital just before 05:00.
The snow caused disruption across many areas, including temporarily closing the Queensferry Crossing."