Mike Clay, chief meteorologist at the local station Bay News 9, was also left stumped by the unusual black line shooting down from a cloud.
The weatherman shared the pictures with some of his colleagues, one of whom came up with a possible explanation, suggesting that the dark line could be the shadow of a contrail.
Contrail is the condensation trail left behind jet aircraft. Contrails form when hot humid air from jet exhaust mixes with environmental air of low vapour pressure and low temperature.
For a contrail shadow to be seen ... Read even more
