New Delhi, May 11 -- The India Meteorological Department (IMD) has forecast heavy rainfall over Tamil Nadu, Puducherry and Karaikal, as well as South Interior Karnataka on Friday and Saturday. Kerala and Mahe are expected to receive heavy rain from Thursday to Saturday.

Hailstorms are forecast in Jammu and Kashmir, Ladakh and Himachal Pradesh on Monday and Tuesday, and in Uttarakhand on Tuesday and Wednesday, it said, adding that the heatwave conditions are expected to persist in isolated areas of Rajasthan, Gujarat and western Madhya Pradesh over the next four to five days.

The weather office also said isolated thunderstorms accompanied by lightning and gusty winds of 40-60 kmph are likely across northwest India between Monday and Frid...