  This paper introduces EQSA, an interactive exploratory tool for earthquake
situational analytics using social media. EQSA is designed to support users to
characterize the condition across the area around the earthquake zone,
regarding related events, resources to be allocated, and responses from the
community. On the general level, changes in the volume of messages from chosen
categories are presented, assisting users in conveying a general idea of the
condition. More in-depth analysis is provided with topic evolution, community
visualization, and location representation. EQSA is developed with intuitive,
interactive features and multiple linked views, visualizing social media data,
and supporting users to gain a comprehensive insight into the situation. In
this paper, we present the application of EQSA with the VAST Challenge 2019:
Mini-Challenge 3 (MC3) dataset.
