Mobile users with the popular app AccuWeather received the alert for the US East Coast and beyond on Tuesday, claiming a tsunami warning was in effect.
It was not immediately clear how many people received the warning.
"Some users may have received notifications that a tsunami warning is in effect for their area", the statement read. No warning is in effect, and there is no danger to the public.
Last month, residents of the West Coast were warned to brace for possible tsunami after an natural disaster off the coast of Alaska.
"Tsunami warnings are especially time sensitive given the fact that people may have only minutes to react to a tsunami threat", said Jonathan Porter, AccuWeather's vice president of business services.
Apparently the National Weather Service was testing a tsunami alert, but the word test didnt make it into the final message.
The error comes weeks after a false ballistic missile alert in Hawaii declaring "THIS IS NOT A DRILL" advised Hawaii residents and tourists to seek immediate shelter.
The company later sent out a tweet acknowledging that the warning was a test.
Other images showed language clarifying that the push notifications were sent out as a test could be seen once the notification was opened.
"Did that False Alarm guy from Hawaii get a new job?" But it was sent out as an alert.
People reported receiving the alerts in New York, Massachusetts, Florida, Louisiana, Texas and more.