The region receives both the northeast monsoon and southwest monsoon rains. Sambalpur gets rainfall from the south western monsoon. South Asia depends critically on monsoon rainfall. Summer rainfall comes from the East Asian Monsoon and from frequent typhoons. The rains are the gifts of the southwest monsoon. Sohra receives rains from the Bay of Bengal arm of the Indian summer monsoon. It causes heavy soil erosion during the monsoon floods. Rainfall during the monsoon is not continuous. Kanchipuram receives rainfall from both Northeast Monsoon and Southwest Monsoon. Water-logging, caused by heavy rains that fall during the summer monsoon, can interrupt transportation networks. A tropical monsoon and humid sub-tropical climate also occurs in places. It is characterised by a warm, rainy summer monsoon and a cold, dry winter monsoon. It also prevents damage due to monsoon floods. Tsushima has a marine subtropical climate strongly influenced by monsoon winds. The rainy season begins with the arrival of the southwest monsoon around mid-May.