April 1983 Basirhat–Bongaon tornado outbreak
The Basirhat-Bongaon tornado outbreak (also known as the Gaighata tornado) occurred on April 12, 1983, specifically in the Gaighata block of Bongaon subdivision in West Bengal near major cities like Basirhat and Bongaon. It was a severe tornado lasting about two minutes with winds estimated around 330 kmph.
Source: Wikipedia — April 1983 Basirhat–Bongaon tornado outbreak (CC BY-SA 4.0)