I Have Heard Of It,

raining cats and dogs,

 and even raining men, but this is the first time I have heard of it raining chocolate! but it happened in Olten, a town in north-western Switzerland, photograph of a car roof from @Olten/Twitter, the Lindt & Spruengli chocolate factory, reported a malfunction of the cooling ventilation system of a cocoa roasting line at the factory, which apparently caused the powdered chocolate along with “cocoa nibs” which are fragments of crushed cocoa beans, to be released into the outside air, the strong winds that have been blowing in the area since Friday morning carried the powdered chocolate from the factory to nearby residential areas, then just as Diana was thinking of flying there, well you know Diana and chocolate! the company announced they had fixed the fault, if you are wondering about 'raining cats and dogs' have a look here, for a possible explanation.