On 25 May, a severe cyclonic storm over the west-central Bay of Bengal moved northwestwards and intensified into a very severe cyclonic storm. On 26 May, the storm continued to move northwestwards and crossed the north Odisha coast, about 20km south of Balasore. On 27 May, the cyclone moved northwestwards and further weakened into a deep depression east of Ranchi in Jharkhand state. The storm affected around 10 million people in West Bengal and 1.7 million people in Odisha. Over 2.2 million people were evacuated to relief camps in both states.