[link to www.emsc-csem.org]
Magnitude mb 4.5
Region MAUG ISLANDS REG, N. MARIANA IS.
Date time 2013-02-17 11:59:18.0 UTC
Location 19.26 N ; 145.33 E
Depth 176 km

it's very close to Asuncion volcano
[link to www.volcano.si.edu]
Volcano Type: Stratovolcano
Volcano Status: Historical
Last Known Eruption: 1906
A single large asymmetrical stratovolcano, steeper on the NE side, forms 3-km-wide Asuncion Island. The steep NE flank of the 857-m-high volcano terminates in high sea cliffs. The gentler SW flanks have low-angle slopes bounded by sea cliffs only a few meters high. The southern flank of the volcano is cut by a large landslide scar...