Figure 7

Screen shots of android application interface. This Figure shows the screen shots of the Android application. These screen shots shows the extracted bursty area in Hiroshima on July 7, 2014. The left-side of the figure shows map with extracted clusters. The right-side of the figure shows a photo including in a tweet in an extracted tweets. The tweet says “A heavy rain!". Moreover, the user who posted this tweet posted the photo that shows a flood on the load. An additional movie file shows this in more detail [see Additional file 2].