Models developed by the U.S. and Japanese scientists are very good for use by India, but those models cannot be run in real-time as they occupy some 14 terabytes of information. So, an index was developed that can quickly assess a tsunami-genic event. Once an event is identified and its potential recognized using the indexing system, the Ministry of Earth Science provides a bulletin that encompasses three levels of communication with local communities that might be affected. The highest alert level advises an immediate evacuation; the second level is an alert that communicates that the tsunami-genic event has occurred but is not severe and evacuation is not necessary; and the third level is an advisory notice only that a tsunami-genic event is not imminent.