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M 3.6 Quake Strikes Potomac-Shenandoah, Maryland

Posted by feww on July 16, 2010

Germantown Quake Largest Ever Recorded in D.C.

More, Stronger Quakes Could Strike the Atlantic Seaboard

The quake epicentered at 39.167°N, 77.252°W, in Germantown neighborhood, about 20 miles NW of Washington DC, and struck at a depth of about 5km on Friday, July 16, 2010 at 09:04:47 UTC, USGS/EHP reported.


Earthquake Details

  • 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

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