The India Meteorological Department issued an alert for heavy rain and thunderstorm in New Delhi. Heavy rain and intense thunderstorms lashed parts of Delhi-NCR on Thursday, bringing respite from days of scorching heat. The India Meteorological Department (IMD) issued a yellow alert for two days alert as skies turned grey.Gusty winds lash Noida, Delhi. (Screengrab/ANI)Visuals show gusty winds in parts of Noida with IMD forecasting 'partly cloudy sky with one or two spells of rain or thundershowers' will continue in the city till 6 June, news agency ANI reported.Onset of monsoonIMD announced the onset on Monsoon on Thursday as it entered the coast of Kerala, three days after its expected arrival date. This marks the formal onset of the country’s four-month rainy season.On May 15, the IMD had forecast that the southwest monsoon was likely to set in over Kerala on May 26, with a model error margin of ± four days.Follow the latest breaking news and developments from India and around the world with Hindustan Times' newsdesk. From politics and policies to the economy and the environment, from local issues to national events and global affairs, we've got you covered.Read MoreSee Less