New Delhi, June 28 -- The monsoon is poised to arrive in Delhi within the next two to three days as favourable atmospheric conditions develop across the remaining parts of the country, the India Meteorological Department (IMD) announced on Friday-marking yet another revision to forecasts that have repeatedly predicted imminent arrival since June 24. Earlier this month, the IMD had forecast the monsoon would reach the national capital by June 24, ahead of its normal arrival date of June 27. Since then, meteorologists have pushed back the onset date, a change now attributed to a particular kind of upper level circulation that is impeding rain over the region. "We can say monsoon will reach Delhi anytime in the next couple of days," an IMD scientist said, echoing prior assurances. The scientist explained that the monsoon trough-currently positioned south of Delhi-needs to shift northward to trigger active rainfall conditions in the region. June has brought 9% excess rainfall nationally, but the distribution remains uneven across regions. Northwest India recorded 39% excess precipitation, while central India saw 22% above normal. In contrast, eastern and northeastern states experienced 12% deficiency, and southern peninsular India recorded just 1% excess. The capital's rainfall deficit of 37%, till date, stands in stark contrast to neighbouring states' performance. Rajasthan has 155% excess rainfall, followed by Haryana's 23% and Punjab's 22% surplus. "The monsoon trough is still south of Delhi and there is ample moisture from the Bay of Bengal," the IMD scientist explained. "Anti-cyclonic winds over the region are inhibiting the flow of monsoon winds, but active conditions will begin once the trough moves northward." A complex network of weather systems continues to fuel heavy to very heavy rainfall across northwest, central, eastern and northeastern India for the next seven days. Assam faces extremely heavy downpours at isolated locations, while Kerala experiences heavy to very heavy rainfall across several areas. The northern mountains, particularly Himachal Pradesh, have witnessed heavy rainfall and flash floods due to orographic effects-moisture-laden winds from the Bay of Bengal rising against the Himalayan slopes. The monsoon's northern boundary currently passes through Jaisalmer, Bikaner, Jhunjhunu, Bharatpur, Rampur, Sonipat and Anup Nagar. A cyclonic circulation over southwest Rajasthan connects to an east-west trough extending to Bangladesh through multiple states. The low-pressure area over the northwest Bay of Bengal has weakened, with its associated circulation merging into the broader trough system. However, meteorologists expect a fresh upper-air cyclonic circulation to develop over the north Bay of Bengal around June 29. From June 27 to July 3, isolated heavy rainfall is forecast for Punjab, Haryana, Himachal Pradesh, Uttarakhand and East Rajasthan. Very heavy precipitation is specifically expected over Himachal Pradesh and Punjab on June 29, Haryana on June 29-30, and Uttarakhand through July 1. The IMD's extended-range forecast indicates the monsoon trough will remain active near its normal position during July 3-10, promising above-normal rainfall across central India and normal to above-normal precipitation over northwest regions, including the Western Himalayas. Southern peninsular India, however, is likely to experience below-normal rainfall during this period, while eastern and northeastern states should see near-normal precipitation levels....