The Indian Northeast (winter) monsoon, occurring roughly from October to December, is characterized by northeasterly winds blowing from the Asian landmass over the Bay of Bengal toward peninsular India (picking up moisture en route and bringing rainfall mainly to southeastern peninsular India, particularly Tamil Nadu, rather than to northeast India, which receives most of its rainfall during the preceding southwest monsoon), by the Intertropical Convergence Zone (ITCZ) migrating southward to a position south of about 20 degrees N (or even into the Southern Hemisphere) during this season, and by the Bay of Bengal (rather than the Arabian Sea) being the primary region of tropical cyclogenesis during this period.