India Meteorological Department declares the arrival of monsoon rains after measuring parametersThe country's annual monsoon arrived on the Kerala coast on Thursday, the state-run weather office said, marking the start of the four-month rainy season crucial for the farm-dependent economy.The India Meteorological Department (IMD) declares the arrival of monsoon rains only after parameters measuring consistency of rainfall over a defined geography, intensity, cloudiness and wind speed are satisfied.Rains usually lash Kerala state, on the country's southwest coast, from around June 1 and cover the whole country by mid-July.
Timely rains trigger the planting of crops such as rice, soybeans and cotton.