Sat here in Tewkesbury an a cold and miserable winters day and found these photos from a holiday in Ibiza last September. There we were catching some rays on the beach and the weather suddenly changed.
There was less than 20 minutes from the clear blue skies below to the last one. I should have taken this as a video as all you could see at one point was a black line coming across the bay from Santa Eulalia towards us on the beach, then we had to grab our stuff and run up to Caesars Beach Bar and wait it out.
Half an hour later and it was all clear again