"While the words 'TEST' were in the header, the actual codes read by computers used coding for real warning, indicating it was a real warning." "A monthly Tsunami Warning test was issued around 830 am by @NWS_NTWC. We have been notified that some users received this test message as an actual Tsunami Warning. The National Tsunami Warning Center also pitched in, saying it "did NOT issue a tsunami Warning, Watch, or Advisory for any part of the United States or Canada this morning." "The issuance did say it was a "TSUNAMI WARNING," but it was not a tsunami warning, rather simply a test of the system.

Source: Fox News February 06, 2018 14:55 UTC