India has put in place an effective system to issue tsunami alarts after the catastrophe had hit country in 2004 .The indian tsunsmi warning system ,which was conceived after the devastating Indian Ocean tsunami of 2004, works by assessing data it received form seismic stations sea level gauges , bottom pressure recorders and predicts the water level changes expected at various location.This has been proved now ,as we were able to issue the first bulletin just seven minutes after the massive quake in japan , ruling out a tsunami threat for the indian ocean , where as the American tsunami warning system , National ocenic and Atmosphere Adminstration issued its firat alart 12 minutes aftre the massive earth quake near the cost of Honshu