A second powerful aftershock rattles Italy after 5.4 temblor

A pair of powerful aftershocks shook central Italy on Wednesday, knocking out power, closing a major highway and sending panicked residents into the rain-drenched streets just two months after a powerful earthquake killed nearly 300 people.

The first quake carried a magnitude of 5.4, but the second one was even stronger, with a preliminary magnitude of 6.1 according to the German Research Centre for Geosciences. The U.S. Geological survey put the magnitude at 6.0 and said the epicenter was in Visso, where buildings crumbled into the street.

People screamed in the streets after the second temblor of the night. "It was a very strong earthquake, apocalyptic," Ussita Mayor Marco Rinaldi told the ANSA news agency. "People are screaming on the street and now we are without lights."

Two people were injured in the Visso area, but otherwise there were no other immediate reports of victims, said Italy's civil protection chief, Fabrizio Curcio. Old churches crumbled and other buildings were damaged, though many of them were in zones that were declared off-limits after the Aug. 24 quake that flattened parts of three towns.

"We're without power, waiting for emergency crews," said Mauro Falcucci, the mayor of Castelsantangelo sul Nera, near the epicenter. Speaking to Sky TG24, he said: "We can't see anything. It's tough. Really tough."

He said some buildings had collapsed, but that there were no immediate reports of injuries in his community. He added that darkness and a downpour were impeding a full accounting.

Italy's national vulcanology center said the first quake struck at 7:10 p.m. local time (1710 GMT) with an epicenter in the Macerata area, near Perugia in the quake-prone Apennine Mountain chain. The U.S. Geological Survey put the epicenter near Visso and said it had a depth of some 10 kilometers (six miles).

The second aftershock struck two hours later at 9:18 p.m. with a similar depth.

Experts say even relatively modest quakes that have shallow depths can cause significant damage because the seismic waves are closer to the surface. But seismologist Gianluca Valensise said a 10-kilometer depth is within the norm for an Apennine temblor.

[NICOLE WINFIELD/AP]