"Yellow warning of thunderstorms" (yay!)

After the hot weather we have been having these last two weeks (and a few days of heatwave), I read today on BBC Weather that there was a "yellow warning of thunderstorms" in our area for today. If there is a storm (or more, if we are lucky), it would be the very first of the summer. I hope so. I love storms, for one, in fact thunderstorms are for me the highlight of summertime. And they would considerably lower the temperature and make it far more comfortable. All right, all right, I don't want to put my hopes up, it is only a yellow warning.