The successful working of this network. The strong ground motion database considered in the present work consists of various earthquakes recorded in the northern part of India. As laid the foundation of Earthquake Early Warning System (EEW) in India. Strong-motion data from various regions of India have been used to study attenuation characteristics of horizontal peak acceleration and velocity. It is observed that the bedrock motions with low amplitude produce high amplification factors while high amplitude bedrock motions produce low amplification factor.