The executive summary of the Department of Homeland Security’s “Comprehensive Testing of Imminent Threat Public Messages for Mobile Devices” says, “This project sought to determine the optimized message contents of imminent threat wireless emergency alert
(WEA) messages delivered over mobile communication devices. This report presents findings for the first WEA
messages disseminated about imminent threats (i.e., first alert messages) from two research phases with U.S.
adults: (1) eight experiments, seven focus groups and 50 think-out-loud interviews; and (2) a survey of an actual
“real world” severe flood in Boulder, Colorado. It also integrates findings from across study methods and
provides actionable guidance and considerations for optimized message contents of imminent one-hour-toimpact
threat alerts delivered over mobile communication devices.”
To read the full report, click here.