Heavy rain, thunderstorms lash Delhi; IMD issues ‘red’ alert

Heavy rain, thunderstorms lash Delhi; IMD issues ‘red’ alert The Indian Meteorological Department (IMD) raised a red alert for Delhi on Thursday, signalling the highest level of warning for severe weather. Meteorologists attributed the sudden deluge to a deepening low-pressure system over the northwestern Himalayas, which funneled moist westerly winds into the capital. Radar images captured an intense convective cell that intensified rapidly, spawning a series of squall lines that swept across the city between 1400 and 1700 hours local time..

The warning prompted authorities to activate emergency response teams and advise citizens to stay indoors, avoid travel, and keep windows shut. Rainfall measurements recorded by the IMD’s network of automatic weather stations showed accumulations ranging from 45 to 80 millimetres within a three‑hour window, exceeding the city’s typical monsoon output for the same period. In some localities, the intensity peaked at 20 millimetres per hour, triggering flash‑flood conditions..

The sudden downpour also caused a sharp drop in temperature, with the mercury falling from a pre‑storm high of 38°C to a more comfortable 29°C by early evening. Residents described the contrast as “a breath of fresh air” after days of scorching heat. The deluge quickly overwhelmed Delhi’s drainage infrastructure, leading to waterlogging on major thoroughfares such as Ashok Rajpath, Outer Ring Road and parts of the Delhi‑Gurgaon Expressway..

Vehicles were forced to halt, and commuters faced long queues at traffic signals. The Delhi Traffic Police issued advisories urging drivers to avoid non‑essential travel and to use alternate routes where possible. In several locations, water depth reached knee level, prompting the deployment of rescue teams equipped with inflatable boats to assist stranded motorists..

Public transport services suffered significant disruptions. The Delhi Metro suspended operations on the Yellow and Red lines for approximately two hours, citing safety concerns related to electrical equipment and track flooding. Bus services operated by the Delhi Transport Corporation were reduced, with many routes cancelled outright..

Authorities coordinated with the Delhi Fire Service to monitor potential hazards, including the risk of electrocution and the spread of water‑borne contaminants in densely populated neighbourhoods. Hospitals across the city reported an uptick in patients presenting with water‑related injuries, ranging from minor slips and falls to more serious cases of electrocution and hypothermia. The All India Institute of Medical Sciences (AIIMS) activated its emergency department to handle the surge, while smaller clinics in affected districts coordinated with municipal health officials to ensure adequate supplies of antiseptics and tetanus shots..

Health workers warned that stagnant water could become a breeding ground for mosquitoes, raising concerns about a possible spike in vector‑borne diseases in the coming weeks. Utility providers also faced challenges as the storm caused temporary outages in several sectors. The Delhi Electricity Board reported brief interruptions affecting up to 1.2 million households, primarily due to short circuits triggered by falling trees and water intrusion into substations..

Meanwhile, the Delhi Water Supply and Sewerage Board warned of possible contamination of drinking water sources, urging residents to boil water before consumption. Engineers were dispatched to inspect critical pipelines and to clear debris that could obstruct flow in the city’s extensive sewer network. The agricultural fringe surrounding Delhi experienced mixed effects..

While the heavy rain provided much‑needed moisture for wheat and mustard crops that had suffered from earlier drought conditions, it also raised the spectre of soil erosion and water‑logging in low‑lying fields. The Punjab State Agricultural University’s extension officers cautioned farmers to monitor crop health closely, recommending the use of raised beds and proper drainage to mitigate potential damage. Economists highlighted the broader economic implications of the storm..

Retail outlets in affected zones reported a temporary dip in foot traffic, though many vendors quickly adapted by offering delivery services. The disruption to logistics chains, particularly for perishable goods, raised concerns about price volatility in local markets. However, analysts noted that the short duration of the event limited the overall fiscal impact, and that the cooler temperatures could boost consumer spending on seasonal apparel and beverages in the days that follow..

In response to the red alert, the Delhi government activated its disaster management protocol, mobilising over 1,500 personnel from the National Disaster Response Force (NDRF), municipal corporations and the Armed Forces. A joint operations centre was established at the Chief Minister’s residence to coordinate rescue efforts, disseminate real‑time updates and manage resource allocation. The authorities also launched a public information campaign across television, radio and social media, emphasizing the importance of avoiding flood‑prone areas and adhering to safety guidelines..

Environmental experts cautioned that such extreme weather events may become more frequent as climate change alters regional monsoon patterns. A recent study by the Centre for Climate Change Research indicated a rising trend in the intensity of convective storms over northern India, linked to rising sea surface temperatures in the Arabian Sea. Researchers urged policymakers to invest in resilient urban infrastructure, including upgraded drainage systems and green spaces that can absorb excess runoff, to reduce the vulnerability of megacities like Delhi..

Looking ahead, the IMD forecasted a gradual weakening of the low‑pressure system over the next 48 hours, with a return to moderate rainfall and a slight increase in temperature. Nonetheless, officials warned that residual waterlogging could persist, especially in poorly drained localities, and that secondary hazards such as landslides on the city’s peripheral hills remained possible. Residents were encouraged to stay informed through official channels and to report any emergencies to the helpline numbers provided by the municipal authorities..

The storm underscored the challenges faced by a rapidly expanding metropolis in coping with extreme weather. While the immediate response demonstrated.