<span style="color: #222222;">Heavy rain drenched parts of the national capital today as monsoon clouds reached the city.<br />''<br />''The downpour led to waterlogging and disruption of traffic movement in many areas and key intersections in the city.<br />''<br />''According to IMD, monsoon clouds are at the doorstep of Delhi and a few places witnessed rain. As predicted, the onset of the monsoon in the city will be declared tomorrow.<br />''<br />''Rainfall data from all weather stations for the last 24 hours ending 8:30 am tomorrow is required to declare the onset.<br />''<br />''The Met department has forecast heavy rainfall at isolated places in the national capital tomorrow.<br />''<br />''Normally, the monsson reaches Delhi on 27th June.<br />''<br />''According to weather experts, the arrival of the monsoon in Delhi earlier than usual can be attributed to a cyclonic circulation, which moved towards southwest Uttar Pradesh on Friday and Saturday, helping the monsoon advance further.</span><br />