Earthquake in Kolkata: Understanding Recent Tremors, Risks, and Preparedness!

Kolkata recently experienced noticeable earthquake tremors linked to a powerful 5.7-magnitude earthquake in Bangladesh. This event highlights the seismic vulnerability of the Kolkata region and underscores the importance of earthquake preparedness for residents and visitors alike.

Recent Earthquake Tremors Felt in Kolkata

On November 20, 2025, a 5.7-magnitude earthquake struck near Dhaka, Bangladesh, at a shallow depth of 10 km, resulting in fatalities and injuries in Bangladesh. Tremors from this quake were strongly felt in Kolkata and neighboring regions, causing panic and temporary evacuation as buildings swayed and residents rushed outdoors. Despite the intensity, no major damage or injuries were reported in Kolkata. Videos of the shaking spread rapidly on social media, demonstrating the quake’s wide impact.

Geological and Seismic Risk Profile of Kolkata

Kolkata lies near active fault lines within the Bengal-Bangladesh-Northeast India seismic corridor, where tectonic plates converge, creating a history of moderate seismic activity. It falls within seismic zone III (medium risk), but the city’s soft loamy soil amplifies tremors, increasing shaking intensity in high-rise buildings. Older structures in North Kolkata are particularly vulnerable, while newer developments in South Kolkata and Salt Lake benefit from modern earthquake-resistant designs. Unauthorized constructions raise concerns about overall structural safety.

Impact and Damage from Recent Earthquakes

While recent tremors caused panic, the physical damage in Kolkata has been minimal due to the quake’s epicenter being in Bangladesh. However, collateral risks remain high due to the vulnerability of older buildings and the lack of widespread citizen preparedness. Similar past quakes reveal that even moderate tremors can cause significant disruption in the urban environment, stressing the need for ongoing vigilance and improved safety infrastructure.

Earthquake Preparedness and Safety Tips

• Drop, Cover, and Hold On: During tremors, drop to the ground, take cover under sturdy furniture, and hold on until shaking stops.
• Stay Indoors if Safe: Do not rush outside during shaking; move away from glass, heavy furniture, and hazards.
• Find Open Space if Outdoors: Move away from buildings, streetlights, and power lines. Stay clear until shaking ends.
• Stop Safely if Driving: Pull over away from overpasses, bridges, and tall trees; remain in the vehicle during shaking.
• Ensure Structural Safety: Regular building inspections, adherence to seismic codes, and retrofitting old buildings can reduce risks.

Why Kolkata Should Stay Prepared

Despite being in a medium-risk zone, Kolkata’s high population density, combined with vulnerable infrastructure and soil conditions, means even moderate earthquakes can trigger emergencies. Public awareness and preparedness remain inadequate, calling for programs educating residents on earthquake safety drills and evacuation protocols. Investment in upgradation of old buildings and policy enforcement on new constructions are critical to safeguard the city’s future.

Conclusion & Call to Action

Kolkata’s recent tremors linked to the Bangladesh earthquake serve as a crucial reminder of the region’s seismic risks. Residents, authorities, and visitors must prioritize earthquake education, building inspections, and preparedness activities to minimize potential damage and loss. Bookmark this guide and stay informed about local updates to ensure your safety in an earthquake-prone region.

FAQs on Earthquake Kolkata

1. How strong was the recent earthquake felt in Kolkata?
A 5.7-magnitude earthquake near Dhaka, Bangladesh, caused tremors felt strongly in Kolkata on November 20, 2025, lasting a few seconds and causing buildings to sway.

2. Is Kolkata at high risk for earthquakes?
Kolkata is in seismic zone III, indicating moderate risk, but its soft soil can amplify tremors, making even moderate quakes potentially hazardous, especially for older buildings.

3. What should I do during an earthquake in Kolkata?
Drop to the ground, take cover under sturdy furniture, hold on until shaking stops, stay indoors if safe, and avoid running outside during earthquakes.

4. Has Kolkata experienced damaging earthquakes before?
While major earthquakes are rare, tremors have been felt multiple times historically; vulnerability arises mainly from older buildings and inadequate preparedness.

5. Are new buildings in Kolkata earthquake-proof?
Many recent constructions in areas like Salt Lake and Newtown incorporate earthquake-resistant features, but unauthorized and older buildings still pose significant risks.