We conducted numerical simulations to forecast near-field tsunami at ocean bottom tsunami meter (OBTM) and GPS buoy stations along the Sumatra Island. We used modeling codes of TUNAMI-N2 (Tohoku University’s Numerical Analysis Model for Investigation of Near-Field Tsunami, No.2) and TUNAMI-F1(Far-Field Tsunami, No.1) developed by the Disaster Control Research Center (DCRC), Tohoku University, Japan in order to estimate the tsunami height and arrival time using proposed scenarios. For numerical simulation, we used three different scenario earthquakes which are considered along the Sunda trench. The source parameters for scenario earthquakes are based on the coral-reef study by Natawidjaja et al. (2006) for the earthquakes of 1797 (Mw 8.7) and 1833 (Mw 8.6 and 8.9). For the 1797 event (scenario 2), we obtained the tsunami height of 1.547 m with the arrival time of 0.8 min at TM2 offshore output point located in the uplift area, while 0.109 m and 3.9 min for the tsunami height and arrival time, respectively, at TM3 offshore output point located to the south from the source. Based on a simulation result for three scenarios using different bathymetry data (1 arc-minute and 30 arc-second), we found that the tsunami waves reach the coastal area in less than 40 min for the output point located in Padang city (OP2). By using detailed bathymetry data, we can estimate more accurate on tsunami arrival time and tsunami height.