Published: 13 September 2025IMDEnvironment
Magnitude 5.8 Earthquake Hits Assam; Tremors Felt Across Northeast
A magnitude 5.8 earthquake struck Udalguri district, Assam, at 4:41 PM IST on September 14, 2025, at a depth of about 5 km, according to the India Meteorological Department. The epicenter was 19 km SSE of Udalguri and 30 km WSW of Dhekiajuli.
Two persons were injured and houses developed cracks with some ceilings collapsing. Two aftershocks (M 3.1 and M 2.9) followed. The event was located near the Kopili Fault, close to the 2021 M 6.4 Sonitpur earthquake. The region is classified in the highest seismic hazard Zone V by BIS.
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Q: Describe the seismotectonic setting of the September 2025 magnitude 5.8 Assam earthquake near the Kopili Fault, and explain the region's seismic zone classification.
Answer (50 words):
A magnitude 5.8 earthquake struck Udalguri, Assam at 4:41 PM IST on 14 September 2025 at about five-kilometre depth, per the India Meteorological Department. The epicentre lay 19 km south-southeast of Udalguri. Two were injured; aftershocks of 3.1 and 2.9 followed. Near the Kopili Fault, the region falls in seismic Zone Five.
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Frequently asked questions
What was the magnitude and location of the Assam earthquake in September 2025?
**A magnitude 5.8 earthquake struck Udalguri district, Assam**. **Epicenter was 19 km SSE of Udalguri and 30 km WSW of Dhekiajuli; two persons injured and houses developed cracks**.
Were there any casualties in the Udalguri Assam earthquake of 2025?
**No casualties were reported** from the magnitude 5.8 earthquake. **Two aftershocks of M 3.1 and M 2.9 followed; event located near the Kopili Fault, close to the 2021 M 6.4 Sonitpur earth**.
Why is Assam so prone to earthquakes?
**Assam lies in Seismic Zone V**, India's highest earthquake risk zone. **Region classified in the highest seismic hazard Zone V by the Bureau of Indian Standards (BIS)**.
Which regions felt tremors from the September 2025 Assam earthquake?
**Magnitude 5.8 earthquake struck Udalguri district, Assam at 4:41 PM IST on September 14, 2025, at a depth of about 5 km (as per IMD)**. Tremors were felt across multiple northeastern states causing widespread panic among residents.
What emergency response was activated after the Assam earthquake?
**A magnitude 5.8 earthquake struck Udalguri district, Assam, at 4:41 PM IST on September 14, 2025, at a depth of about 5 km, according to the India Meteorologica**. Disaster management teams were deployed and structural damage assessments were carried out in affected districts.
