This paper analyses the typhoon Haiyan/ Yolanda hazard event in order to understand if a better early warning system would help to save more lives. The study compares the actual event and different general hazard information, forecasts in order to determine the accuracy of the predictions. It argues that the timeliness, content and coverage of warning messages are essential for a successful evacuation and other preparations.

link to document
http://www.preventionweb.net/files/36860_36860gizassessmentofearlywarningyol.pdf