Wow! First an 8.1, then a 7.1, now a 6.1. Are we counting down to something here?—–S.T. LLoyd
A strong earthquake shook Mexico, causing new alarm in a country reeling from two still-more-powerful quakes this month that have killed nearly 400 people. The new temblor was centered around the state of Oaxaca, which was the region most battered by a magnitude 8.1 quake on September 7.