A very heavy rain shower over Jura, seen from the Islay ferry on the way to Kennacraig in June 2017. You can just make out the Paps of Jura through the rain towards the right, a few minutes later they were completely obscured by the rain.
Islay Pictures Photoblog
Pictures from the Isle of Islay, Scotland
Armin Grewe mentioned this Image on islay.org.uk.