A major earthquake with a preliminary magnitude of 7.2 has triggered a tsunami warning for the southern Alaska peninsula.

A rare tsunami warning was issued for part of Alaska’s coast after a magnitude 7.3 earthquake struck near Sand Point in the Aleutian Islands. A small tsunami wave was measured at Sand Point, Alaska.

A lightly populated stretch of Alaska ’s southern coast was under a tsunami warning Wednesday after a strong earthquake was felt throughout the region, and officials in the Pacific Northwest were evaluating whether there was any threat to coastlines there. Early measurements put the quake’s magnitude at 7.3.