A tornado cut a 16 mile path from Dum Dum to se of Baliaghata, east of Calcutta, through Sonarpur, and then southeast of Calcutta on the southeast State Railway. This tornado passed within 3 miles of Calcutta on its eastern side, between Calcuttta and the Great salt-water Lake. The path was south-37 deg  E. The tornado moved very slow and was  about a quarter to a half mile wide. An account of the tornado was given in (Floyd, 1838) as follows:

"At Bykunthpore, for about a quarter mile,  not a house, hut nor tree escaped the violence of the storm; in fact everything that opposed its progress was leveled to the ground. Coconut and date trees were twisted  out of the ground and thrown to a distance of  2-300ft. Chowbagan and Sambandal were hard hit. A slight bamboo was projected horizontally through a raised tile walk., which pierced through the whole breadth—5 feet thick, breaking the tile on both sides. In other villages the visitation has been aweful indeed, but in other places it surpasses all description. As far as the eye could reach, not a house could be seen. The grass ( I am at a loss to account for it) has been consumed, and the choppers[frames] of houses have vanished as if they were mere vapor.  Fisherman on the lake returned to their demolished village, with only a few left to account for the occurrence. There was little rain but a severe fall of hail. Hail was measured at 3.5 lbs at the Dum Dum weather observatory near Calcutta. “It appeared to have been remarkable for its slow rate of progress(16 miles in 2 to 3 hours), and it is to this, perhaps, that its unusual destructiveness can be ascribed. A peepul tree, which had been standing time out of mind, and to the knowledge of the older inhabitants had never lost a bough, was the first that fell. The circle from whence the roots sprung, was 35 feet in diameter,  and these being of extraordinary length,  caused the earth to come away from the tree, and to leave a chasm of about 38 feet in width and 14 feet in depth; most of its stouter branches were wrenched off, and thrown into an adjoining tank, at such a distance to prove the extraordinary violence  with which the tree was assailed. The bark of palm trees has been peeled off as with a knife. The villages of Sambandal and Chowbagan have been laid desolate; men, women, and  children, as well as animals have died without number."
 
 

Floyd, J., 1838: Account of the hurricane or whirlwind of the 8th April 1838. Amer. Jour. Sci. 36, 71-75.  Abridged from the India Review and Journal of Foreign Science and Arts for July, 1838.