Scots have been reacting to an 'apocalyptic-sounding' noise akin to an 'explosion' which was reported to have been heard overnight - with the 'frightening' racket causing concern to light-sleepers.
People were woken up by a 'huge bang' around 3am which could be heard in areas including Possilpark, Bishopbriggs and Cumbernauld on the outskirts of Glasgow.
It is unclear as to what triggered the disturbance, with police saying they were not aware of anything that may have caused an issue like this in the early hours of the morning.
However many think it may have been due to the thunder and lightening brought about by Storm Franklin.
One twitter user asked: "Was wind and rain not enough? Why you throwing thunder and lightning into the mix Franklin."
Another wrote: "Set the car alarm off and shook the house".
A third agreed, writing: "I can't see one weather map that mentions thunder and lightning but it literally just shook our house outside Glasgow."
One online user concluded: "It was honestly the most crazy and apocalyptic thing I've ever heard. Way beyond normal thunder. I wondered at first if the wind had torn the roof off the house."
Over on Facebook, the reaction was the same. One person wrote: "Did anyone hear a huge bang at about 3am??? Sounded like an explosion! Any idea what it was?"
A user who replied couldn't provide any answers, but said the bang made him 'jump out his skin'.
Lightning strikes and rumbles of thunder were also included in some descriptions of the noise, prompting many to think this was indeed the explanation behind the unnerving sound.
Scotland's weather has faced a hammering by Storms Dudley, Eunice, and Franklin in recent days.
Three 'flood alerts' and 12 of the more severe 'flood warnings' by the Scottish Environment Protection Agency (SEPA) cover areas in central Scotland, the Scottish Borders, Tayside, Argyle, Ayrshire and Bute.
Storm Franklin was due to bring strong gusts to 75mph, but the Met Office weather warning ended at 1pm today, suggesting we may be through the worst of it.
Don't miss the latest news from around Scotland and beyond - Sign up to our daily newsletter here.