No, it wasn't a dream

I thought I was still sleeping when I switched on the radio this morning to hear that all Scottish airports had been closed down because of a volcano in Iceland. But no, it is true. Apparently there's a volcanic ash cloud sweeping across the country. We can't see it but that's because it's where the aeroplanes would be flying. I'm quite glad they're not seeing as I've just read about a jumbo jet that once flew unknowingly through an ash cloud and all four of its engines shut down!