Sumatra Earthquake. This event has been reviewed by a seismologist. 

Magnitude	6.6
Date-Time	Monday, September 05, 2011 at 17:55:13 UTC Tuesday, September 06, 2011 at 12:55:13 AM at epicenter Time of Earthquake in other Time Zones
Location	2.973°N, 97.997°E
Depth	110.1 km (68.4 miles)
Region	NORTHERN SUMATRA, INDONESIA
Distances	100 km (62 miles) SW of Medan, Sumatra, Indonesia 118 km (73 miles) W of Pematangsiantar, Sumatra, Indonesia 160 km (99 miles) NNW of Sibolga, Sumatra, Indonesia 1409 km (875 miles) NW of JAKARTA, Java, Indonesia
Location Uncertainty	horizontal +/- 13.6 km (8.5 miles); depth +/- 8.3 km (5.2 miles)
Parameters	NST=248, Nph=249, Dmin=108 km, Rmss=1.11 sec, Gp= 22°, M-type=regional moment magnitude (Mw), Version=6
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc0005pdr

Source: earthquake.usgs