The National Weather Service on Tuesday said a tsunami alert sent to some phones in the Gulf Coast area was just a test that was accidentally issued.
The warning was sent to some phones at about 7:30 a.m., according to the National Weather Service in League City. The message, which was clearly marked as a test, was sent out the U.S. National Tsunami Warning Center.
Similar alerts were sent to phones on the East Coast.
Some National Weather Service offices pointed to an error by third-party phone apps, and not U.S. government alert systems.