The quake struck Sunday morning near Shetland Islands 's Shetland Islands . `` Authorities in the region near the epicenter should be made aware of this possibility , '' the warning center added . The CNN reports it struck at a depth of 539 kilometers . A U.S. agency warns there 's a `` small possibility of a ... regional tsunami ''
The quake struck Sunday morning near Shetland Islands 's Shetland Islands . The CNN reports it struck at a depth of 539 kilometers . A U.S. agency warns there 's a `` small possibility of a ... regional tsunami ''