Advance of the southwest monsoon over the Indian mainland is marked by its onset over Kerala, beginning the four-month rainy season. “As per the progress and monitoring, it shows that our prediction (of onset over Kerala on May 27) will be correct for monsoon,” said IMD scientist R K Jenamani while referring to the progress and arrival over Andaman Sea and adjoining southeast Bay of Bengal.
Heat wave conditions over northwest and central India, meanwhile, reduced significantly in intensity and distribution on Monday. “Fall in maximum temperatures by 3-4 degree Celsius is likely over many parts of northwest India during the next 24 hours,” said the IMD.
Two cyclonic circulations — one over Lakshadweep and the other over the Tamil Nadu coast — and strong lower level westerly flow from Arabian Sea will bring heavy to very heavy rainfall over Kerala, and coastal and south interior Karnataka during next five days, and over parts of Tamil Nadu till May 18, the IMD said.
A western disturbance currently over central Pakistan, on the other hand, will result in scattered to fairly widespread light/moderate rainfall over Jammu-Kashmir, Himachal Pradesh and Uttarakhand on Tuesday. Isolated hailstorms are also likely over Himachal Pradesh and Uttarakhand in the next 24 hours. The met department also predicted dust storms/thunderstorms at isolated places over Punjab, Haryana, Delhi, Uttar Pradesh and Rajasthan during that period.