New Delhi: After the delay of two days, Southwest monsoon made onset over Kerala coast on June 3, marking the start of the four-month rainy season, the India Meteorological Department (IMD) said. The normal onset date for Southwest Monsoon over Kerala is June 1.
“The Southwest Monsoon has made an onset over southern parts of Kerala,” said IMD Director General Mrutunjay Mohapatra said to media.
Earlier on Tuesday, the IMD had upgraded its monsoon forecast and said the country would receive “normal to above normal” rainfall with “well distributed” showers in the June-September period.
“Quantitatively, the monsoon seasonal rainfall over the country as a whole is likely to be 101% of the Long Period Average (LPA) with a model error of ± 4%,” IMD director general Mrutyunjay Mohapatra said while releasing the second stage long range forecast.
In the first stage forecast in mid-April, the IMD had predicted rainfall to be 98% of the LPA with a model error of ± 5%. The LPA of monsoon rainfall over the country for the period 1961-2010 is 88 cm. The 2021 monsoon will be the third consecutive year of good rainfall, and could lead to new record foodgrain output like in 2019 and 2020.
Fairly widespread rainfall and thunderstorms with heavy rainfall has been predicted at isolated places over Northeast India from June 8 to June 10.
Scattered rainfall and thunderstorms with isolated heavy falls likely over south Peninsular India and Islands, as well as over Uttar Pradesh, Uttarakhand and East, Central and West India.
Weather likely to be dry over remaining parts of the country, said the IMD in its early morning report.
Sharing inputs about monsoon circumstances, the weather office said, the northern limit of southwest monsoon continues to pass through 5 degree North and 72 degree East.
The Western Disturbance as a trough in mid and upper tropospheric westerlies with its axis at 5.8 km above mean sea level roughly along longitude 80 degree east to the north of latitude 25 degree north persists, it said.
The weather office also mentioned that the trough with its axis at 3.1 km above mean sea level roughly along longitude 90 degree east to the north of latitude 22 degree north persists.
Meanwhile, he cyclonic circulation over central Pakistan and neighbourhood, as per the IMD, is also extending up to 1.5 km above mean sea level.
It also alleged that similar weather conditions also persist over south Chhattisgarh and neighbourhood at 0.9 km above mean sea level.