Effects of vertical wind shear and storm motion on tropical cyclone rainfall asymmetries over the North Indian Ocean

•The maximum tropical cyclone rainfall asymmetry was predominantly downshear in the Bay of Bengal and the Arabian Sea.•In the case of the extreme severe cyclonic storm, the maximum tropical cyclone rainfall asymmetry was in the upshear left quadrant in the Bay of Bengal.•The magnitude of tropical cyclone rainfall asymmetry declined (increased) with tropical cyclone intensity (shear strength).•In a strong shear environment (>7 m s-1), the downshear left quadrant rainfall maximum was dominant in the Bay of Bengal.•In a weak shear environment (7 m s-1) omitted for the AS because the maximum value for this basin was about 7 m s-1. The result showed that the downshear left quadrant was dominant in the BoB for the maximum TC rainfall asymmetry. In a weak shear environment (