S everal earthquakes, including a 7.4 magnitude one, struck off the Russian coast on Sunday, according to the U.S. Geological Survey, prompting brief warnings of potential tsunami waves on the nearby peninsula and farther across the Pacific in Hawaii.

On Sunday, July 20, multiple earthquakes, including one that was 7.4 magnitude, struck the Russian coast. The U.S. National Tsunami Warning Center (USNTWC) initially issued a tsunami watch for Hawaii as a result at 9:03 p.m. local time on Saturday.

A magnitude‑7.4 earthquake off Russia's Kamchatka Peninsula triggered a brief Saturday night tsunami watch for the Hawaiian Islands. It was lifted in under 40 minutes, but why are Hawaiian locals and tourists being asked to keep their guards up?