The following information is from the United States Geological Survey Earthquake Hazards Program, it was breaking news in the DC area this morning...
Magnitude: 3.6
Date-Time: Friday, July 16, 2010 at 09:04:47 UTC / Friday, July 16, 2010 at 05:04:47 AM at epicenter
Location: 39.167?N, 77.252?W
Depth: 5 km (3.1 miles) set by location program
Region: POTOMAC-SHENANDOAH REGION
Distances:
15 km (10 miles) NW of Rockville, Maryland
30 km (15 miles) ENE of Leesburg, Virginia
35 km (20 miles) NW of WASHINGTON, D.C.
70 km (45 miles) WNW of ANNAPOLIS, Maryland
Location Uncertainty: horizontal +/- 13.3 km (8.3 miles); depth fixed by location program
Parameters: NST= 15, Nph= 15, Dmin=44.7 km, Rmss=1.49 sec, Gp=133?,
M-type="Nuttli" surface wave magnitude (mbLg), Version=6
Source: USGS NEIC (WDCS-D)
Event ID: us2010yua6
VIA
no OT, the average number of earthquakes per year has not been reached yet...



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