Type of Earthquake Warning System Onsite EWS Onsite EWS is a social system and helps users directly before the damaging secondary waves strikes. Don’t save data thus no help in Research. Programmed hardware takes less time to calculate intensity. Triggers alarm within a second and shut down all running applications. Best available option of sensing earthquake from all directions including aftershocks. More helpful in case epic centre is nearer to the installation. Regional EWS can deliver good results if both system work together. Regional EWS Regional EWS is a scientific system and capable to warn farthest cities before primary waves strikes. Collect and record data for future Research. Works on magnitude & takes more time to calculate intensity of earthquake. Capable of Giving early warning to farthest cities before P waves reaches and safety measures depends on further connectivity. Capable of sensing earth motion only where sensors installed. Less helpful if epic centre is nearer to the installation.