Natural disasters are increasing with over $175 billion in damages and 8900 lives lost in 2016 alone. To help mitigate the impact of these events on people, countries are turning to location-based mobile emergency alert systems (MEAS) for their practical benefits and ability to deliver personalised emergency notifications to individuals. Most systems depend on persons choosing to use the service and share personal details (e.g. medical information) to improve the alert service. However concerns about data privacy have been raised. Focusing people’s desire to protect themselves from harm, this research-in-progress paper draws on Protection Motivation Theory and work on privacy concern to evaluate willingness to use MEAS, which require the disclosure of personal information to service providers. Preliminary results using data from 103 respondents are reported. The findings are expected to enhance understanding of MEAS use, focusing on what motivates or inhibits people in taking protective actions by using MEAS.