Juneau, Alaska (KINY) The Associated Press said a third party vendor was to blame for a false warning issued last month.
There have been other false alarms in Mexico, the East Coast and the Caribbean. The National Weather service said causes of these alarms included one where the agency inadvertently re-used a number that prompted a vendor to interpret the test as real. In others third party software incorrectly processed the test message.
The test message in Alaska on May 11 was properly coded but was somehow re-transmitted in an abbreviated format, which stopped the test coding and caused activation of the Emergency Alert System.
Officials with the Alaska State Emergency Communications Committee said this incident suggests the format of the NWS internal testing system for tsunamis should be reviewed.