The Nepal government science and technology body, Nepal Academy of Science and Technology (NAST) has installed an early warning system in its Khumaltar office. According to reports, the early warning system can inform the earthquake in 10-22 seconds in advance. The system relies on the travel of different types of earthquake waves.
During earthquake two types of waves namely, P-wave and S-wave, are generated. While P-waves travel fast and are less damaging to structures, S-waves are more devastating. The warning system picks up P-waves and warn in advance about the upcoming damaging S-wave.