Artillery training explains loud noises that could be heard across the region Saturday night.

Saturday night booming loud noises could be heard from Collingwood to Elmvale, and as far south as Shelburne.

Officials at CFB Borden have confirmed that artillery training was taking place in Meaford.

A meteorologist with Environment Canada said there was also a significant weather inversion Sunday night, which would have carried the sound a significant distance.