Oil depot explosion(s) near Hemel Hempstead, England.
I wanted to see how it registered on the earthquake sensors, as it seems to have been a HUGE bang. It MUST have registered somewhere at a reasonable level on ye olde Richter Scale. But unfortunately I've been unable to find what I want as the nearest station seems to be down. D'Oh!
Anyone able to find anything better? (than this see 6.03am)