WEA Message Testing

Comprehensive Testing of Imminent Threat Public Messages for Mobile Devices

by Hamilton Bean, Brooke Liu, Stephanie Madden, Dennis Mileti, Jeannette Sutton, Michele Wood  

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-to-impact threat alerts delivered over mobile communication devices.

Tsunami Warning Project

Mapping Observations of the 2011 Tohoku Tsunami into Enhanced, Time-dependent Warning Messages

by J. Shi, J. Sutton, M.D. Kohler, J-P Ampuero  
Recent results are presented to illustrate how predictions of tsunami  wave impact and tsunami warning messages can be improved by including  information about multiple large-amplitude wave arrivals over longer  durations and at refined spatial resolution. Following focus group  research, revised tsunami messages were evaluated via online experiments  with the public, to determine how revised message content, in contrast  with the original message, affects message receiver understanding,  believing, and personalizing, all of which are pre-decisional decision  making activities.