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* Sunday, July 18, 2010 at 05:56:49 UTC
* Saturday, July 17, 2010 at 09:56:49 PM at epicenter
Location 52.970°N, 169.504°W
Depth 35 km (21.7 miles) set by location program
Region FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
* 43 km (27 miles) W (274°) from Nikolski, AK
* 222 km (138 miles) WSW (244°) from Unalaska, AK
* 277 km (172 miles) WSW (243°) from Akutan, AK
* 1493 km (928 miles) WSW (241°) from Anchorage, AK
Location Uncertainty horizontal +/- 22.5 km (14.0 miles); depth fixed by location program
Parameters NST=137, Nph=137, Dmin=222.7 km, Rmss=1.02 sec, Gp=288°,
M-type=teleseismic moment magnitude (Mw), Version=7
* U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver
Event ID us2010ywaq
Drivers have trouble steering. Houses that are not bolted down might shift on their foundations. Tall structures such as towers and chimneys might twist and fall. Well-built buildings suffer slight damage. Poorly built structures suffer severe damage. Tree branches break. Hillsides might crack if the ground is wet. Water levels in wells might change.