A strong earthquake measuring 7.3 on the Richter scale rattled the southern coast of Alaska on Tuesday, prompting an immediate tsunami warning for parts of the state’s southern peninsula.

The quake struck around 4:30 p.m. EST, about 54 miles south of Sand Point, according to the U.S. Geological Survey. In response, the National Weather Service quickly issued a tsunami warning, cautioning coastal residents about the potential for dangerous waves.

A map released by NOAA highlighted the areas most at risk, with particular focus on sections of the Alaska Peninsula under threat.

While the affected area is relatively remote, it includes the Alaska Peninsula Wildlife National Preserve as well as several small coastal communities.

A spokesperson from the state’s emergency management team emphasized the seriousness of the situation:

“We’ve seen quakes in this area before that didn’t generate major tsunami waves, but we’re taking no chances. We want residents informed and ready to evacuate if needed.”

Roughly an hour after the earthquake, officials reported no immediate damage or signs of tsunami waves. Authorities maintained a close watch as the situation evolved.

Not long after, the initial tsunami warning was downgraded to an advisory, signaling a reduced threat but urging continued caution along the coast.