5.9 Earthquake in Virginia

Note: USGS upgraded to 5.9 from the 5.8 preliminary estimate

Between Richmond and Charlottesville (h/t Corey S)

Magnitude	5.9
Date-Time	Tuesday, August 23, 2011 at 17:51:03 UTC Tuesday, August 23, 2011 at 01:51:03 PM at epicenter
Location	37.975°N, 77.969°W
Depth	1 km (~0.6 mile) (poorly constrained)
Region	VIRGINIA
Distances	6 km (4 miles) SSE (152°) from Louisa, VA 6 km (4 miles) SW (236°) from Mineral, VA 26 km (16 miles) SE (133°) from Gordonsville, VA 32 km (20 miles) E (79°) from Lake Monticello, VA 66 km (41 miles) NW (318°) from Richmond, VA 134 km (83 miles) SW (219°) from Washington, DC
Location Uncertainty	horizontal +/- 10.9 km (6.8 miles); depth +/- 7.4 km (4.6 miles)
Parameters	NST=390, Nph=390, Dmin=57.9 km, Rmss=1.17 sec, Gp= 47°, M-type=regional moment magnitude (Mw), Version=6
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc0005ild

If you felt it, you can report is here to USGS: Did You Feel It? – Report an earthquake

There’s an earthen dam near the epicenter, 1.7 miles away, I wonder how it fared:

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Ric Werme

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August 24, 2011 4:53 pm

Tessa says:
August 24, 2011 at 9:53 am

Felt it up here in Norfolk, VA. okay so for all you californians, we dont get these very often so back off!

That’s not the way to describe this to Californians. I felt it in Nashua NH, it was really weak, but several other coworkers also noticed it. That’s over 500 miles from the epicenter. San Francisco to San Diego is a little bit less.
How strong would a earthquake in the Bay area have to be to be felt in San Diego?