5.7-magnitude earthquake hits North Sumatra off Indonesia's coast on July 20, no tsunami warning issued.

5.7-magnitude earthquake hits North Sumatra off Indonesia's coast on July 20, with epicenter 153 km SW of West Nias regency and a depth of 13 km under the seabed. The Indonesian meteorology, climatology, and geophysics agency did not issue a tsunami warning as tremors were not expected to generate large waves. The region, part of the seismically active "Pacific Ring of Fire," frequently experiences earthquakes.