 Most of the precipitation is from the southeast monsoon which may bring in excess of 1500 mm of rainfall.Tornadoes are relatively rare in West Bengal and Bangladesh, but one did occur on March 24, 1998 killing over 250 near Dantan.Initially, this tornado was reported as a cyclone with wind speeds of close to 200 km/h that caused the destruction of an estimated 9,000 houses and injuries to 3,000 people.