A tsunami warning was issued for portions of Alaska’s southern peninsula on Tuesday after a strong 7.3 magnitude earthquake occurred off the state’s southern coast. The U.S. Geological Survey reports that the earthquake happened approximately 54 miles south of Sand Point at 4:30 p.m. EST. Concerned about potential waves along the coastline, the National Weather Service promptly issued a tsunami warning.

NOAA published a map of the impacted areas, emphasizing areas of the Alaska Peninsula that were at risk of tsunamis. The Alaska Peninsula Wildlife National Preserve and a number of small coastal communities are located within the sparsely populated region.