Powerful 7.8 Quake Hits Alaska Isles; Sparks Tsunami Warning

A powerful 7.8 earthquake struck the Alaska Peninsula late Tuesday, triggering a tsunami warning.
Powerful 7.8 Quake Hits Alaska Isles; Sparks Tsunami Warning
A map showing the location of the July 22, 2020, 7.8 magnitude earthquake south-southeast of Perryville, Alaska. USGS
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ANCHORAGE, Alaska—A powerful 7.8 earthquake struck the Alaska Peninsula late Tuesday, triggering a tsunami warning that sent residents fleeing to higher ground before it was called off without any damaging waves.

According to the U.S. Geological Survey, the 7.8 magnitude quake struck Tuesday at 10:12 p.m. local time. The quake was centered in waters 65 miles (105 kilometers) south-southeast of Perryville, Alaska at a depth of 17 miles (28 km), deeper than an earlier estimate.