Sikkim, March 21: An earthquake of magnitude 4.1 struck Mangan in Sikkim on Saturday, the National Centre for Seismology (NCS) said., March 21 Mangan
The earthquake occurred at 8:46 pm at a shallow depth of 14 kilometres.
"EQ of M: 4.1, On: 21/03/2026 20:46:01 IST, Lat: 27.556 N, Long: 88.576 E, Depth: 14 Km, Location: Mangan, Sikkim," NCS wrote on X.
Further details are awaited.
Earlier today, an earthquake of magnitude 2.9 struck Kokrajhar in Assam, at a depth of five kilometres.
"EQ of M: 2.9, On: 21/03/2026 11:59:21 IST, Lat: 26.340 N, Long: 89.925 E, Depth: 5 Km, Location: Kokrajhar, Assam," NCS said.
Earthquakes can occur anywhere between the Earth's surface and about 700 kilometres below the surface. For scientific purposes, this earthquake depth range of 0 - 700 km is divided into three zones: shallow, intermediate, and deep, as per USGS data.
Shallow earthquakes are between 0 and 70 km deep; intermediate earthquakes, 70 - 300 km deep; and deep earthquakes, 300 - 700 km deep. In general, the term "deep-focus earthquakes" is applied to earthquakes deeper than 70 km, the USGS states.
Sikkim and parts of north-east India are prone to earthquakes due to the tectonic movement amid several active geological faults near the Himalayas.
