1997 Umbria and Marche earthquake
The 1997 Umbria and Marche earthquake occurred in the regions of Umbria and Marche, central Italy on the morning of September 26. It was preceded by a foreshock almost as strong as the main quake. The foreshock occurred at 02:33 CEST (00:33 UTC), rated , and the second – the main shock – occurred at 11:40 CEST (09:40 UTC), rated . Their epicentre was in Annifo. The mainshock was assigned X ("Extreme") and foreshock VIII ("Severe") on the Mercalli intensity scale.