The IMD has issued heavy rainfall and hailstorm warning for several states/UTs for Monday (May 4). Heavy rainfall is likely over Arunachal Pradesh, Assam, Meghalaya, Bihar, Kerala, Puducherry, Nagaland, Manipur, Mizoram, Tripura, Karnataka, West Bengal, Sikkim and Tamil Nadu. Hailstorm is likely over Bihar, Haryana, Chandigarh, Delhi, Himachal Pradesh, Jharkhand, Punjab, Uttarakhand and Rajasthan.