Image
© USGS
Potomac-Shenandoah Region
The DC area was shaken by a minor earthquake early Friday. The quake hit at 5:04 a.m. EDT and had a magnitude of 3.6. The quake was centered in the Rockville, Md., area said Randy Baldwin, a physicist with U.S. Geological Survey's National Earthquake Information Center.

Gloria Jackson, a police communications supervisor for the Montgomery County Police Department, said the department has gotten numerous calls about the earthquake, but that no injuries or significant property damage had been reported as of 5:35 a.m.

Details from USGS:

Date-Time:
Friday, July 16, 2010 at 09:04:47 UTC

Friday, July 16, 2010 at 05:04:47 AM at epicenter

Time of Earthquake in other Time Zones

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