However, police said that what people were actually hearing was the weather phenomenon known as "thundersnow". Two "extraordinarily loud" thunder claps were heard over the capital just before 05:00.

But sometimes it’s a flash high above the surface that really steals the show. Vivid bouts of thundersnow are a rare but beautiful phenomenon that some folks are lucky to experience during the ...

But sometimes it’s a flash high above the surface that really steals the show. Vivid bouts of thundersnow are a rare but beautiful phenomenon that some folks are lucky to experience during the winter ...