The remote sensing techniques have a tremendous impact on detecting floor changes triggered by catastrophic events. Recognising the capability of acquiring satellite data of massive areas, the satellite remote sensing can provide a synoptic view of the temporal evolution of the 2004 tsunami. Consequently, remote sensing has been broadly used for December 26, 2004, tsunami detection, mapping, monitoring, damage assessment, and disaster management, and would play an important role in devising a warning machine due to its “wide and insightful eyesight” in two observing similar catastrophic disasters.