March 27, 2013 9:48:43 AM
MEXICO CITY -- Earthquakes shook a broad swath of southern Mexico on Tuesday, causing buildings to sway in the capital and sending thousands fleeing into the streets as quake alarms sounded. But there were no immediate reports of damages or injuries.
The U.S. Geological Survey said a magnitude-5.5 quake hit at 9:04 a.m. EDT, centered about 10 miles west-southwest of Pinotepa Nacional on the Pacific Coast and 227 miles south-southeast of Mexico City.
Mexico Seismology Service initially calculated the quake's magnitude at 5.9.
A second quake struck near the same spot eight minutes later, also setting off alarms in the capital and causing people to evacuate tall buildings in the capital. The USGS calculated the magnitude of that quake at 5.1.
Mexico City's soft soil and geology make it especially sensitive to distant earthquakes. But Mayor Manuel Mancera said in a Twitter post that no damage was reported. Local news media also said there were no reports of damage close to Pinotepa Nacional.
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