Contributions of this paper: In this paper, we primarily focus on ranging source of an explosion event from accelerometer readings obtained from statically placed smartphones in the vicinity of the explosion event, which sense the associated seismic vibrations. A secondary focus is on estimating the intensity of the explosion (as a notion of the charge-weight of the explosive material). Unfortunately, come with significant challenges. The first (and most significant) challenge is the access to a facility where real explosions take place, while being controlled suitably to place smartphone sensors and obtain corresponding ground truth data (in terms of explosives type, intensity, distance from the smartphones etc). Fortunately, the Explosives Research Lab at Missouri University of Science and Technology is a facility where regular blasts in a controlled facility are carried out to train students. We participated in multiple blasting experiments in May 2014, with a number of smartphones to collect corresponding sensory data (after following appropriate safety procedures) to demonstrate the feasibility of ranging explosion events The second major challenge stems from continuously storing and processing accelerometer readings from smartphones Basically, storing all accelerometer readings and them continuously to range explosion events is clearly a from the perspective of storage efficiency. What we need is an effective mechanism to store and process only those