Tremors shook Delhi-NCR late on October 6. A 4.9 magnitude earthquake struck Chamoli in Uttarakhand at 10:23 pm IST, the National Centre for Seismology reported.

The epicentre was near Khadun Laga Gawali at a depth of 13 km. The European agency EMSC pegged it at 5.1 magnitude. Tremors were felt across Delhi, Haryana, Uttar Pradesh and Uttarakhand.

Residents rushed out of buildings in many areas. Social media filled with reports within minutes. There were no immediate reports of major damage or casualties.

Earlier the same morning, a 4.5 magnitude quake hit Nagaon in Assam. The back-to-back tremors kept disaster agencies alert. Experts advise people to follow safety drills during aftershocks and check for structural cracks. The NCS monitors seismic activity round the clock. Delhi falls in a high-risk zone, making preparedness vital. Authorities urged residents not to panic but to stay alert for aftershocks. Emergency helplines were activated as a precaution across the affected districts.