ML12041A404

E-mail from M. King, NRR to P. Boyle, NRR Earthquake in Yorl, PA at 13:53 Hr

ML12041A404
Person / Time
Site:	North Anna
Issue date:	08/23/2011
From:	Mark King Office of Nuclear Reactor Regulation
To:	Patrick Boyle Office of Nuclear Reactor Regulation
References
FOIA/PA-2011-0357
Download: ML12041A404 (1)

Text

King, Mark From: King, Mark Sent: Tuesday, August 23, 2011 2:16 PM To: Boyle, Patrick

Subject:

RE: Earthquake in Yorl, PA at 13:53 hr Yep - and epicenter was less than 20miles from North Anna site.

Earthquake Details

• This event has been reviewed by a seismologist.

Magnitude 5.8 (Preliminary magnitude - update expected within 15 minutes) 0 Tuesday, August 23, 2011 at 17:51:03 UTC Date-Time 0 Tuesday, August 23, 2011 at 01:51:03 PM at epicenter Location 37.875-N, 77.908-W Depth 6 km (3.7 miles) set by location program Region VIRGINIA

• 15 km (9 miles) S (1790) from Mineral, VA_

S1.8 km (12_m.les) SSE.. (1540_).from Louisa, VA, Distances

• 26 km (16 miles) ENE (58') from Columbia, VA

• 54 km (34 miles) NW (314°) from Richmond, VA

• 139 km (87 miles) SW (2140) from Washington, DC Location Uncertainty Error estimate not available Parameters NST= 17, Nph= 17, Dmin=59.5 km, Rmss=0.33 sec, Gp=173°,

M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp), Version=1 Source S West Coast and Alaska Tsunami Warning Center/NOAA/NWS Event ID atOOlqe6x3 From: Boyle, Patrick \'- '

Sent: Tuesday, August 23, 2011 2:04 PM To: NRRDORLLPL2-1 Distribution Cc: King, Mark

Subject:

Earthquake in Yorl, PA at 13:53 hr I just felt an earthquake, it seemed large than the one earlier in the year, so if I had to guess I would call it a 3.5 Please let the Peach Bottom PM know.

/J