The National Weather Service put out a warning yesterday about the threat of thunderstorms with possible heavy rain and even hail for this afternoon.  Sometimes, as such storms are coming in, the cloud formations in the Valley building up against the mountains in the distance can make for some very interesting images.  The image below was from this morning and it illustrates those conditions. .

It will probably be booming and raining this afternoon.  Always fun IMHO but I know it can be hard on pets.

Click for a larger view as this is a 7 shot panorama and is best viewed large on your screen.