Delhi and the National Capital Region (NCR) experienced a series of severe dust storms, characterized by high wind speeds reaching up to 128 kmph, accompanied by intense heat and atmospheric instability. These pre-monsoon phenomena disrupted normal life, caused significant flight delays, and led to widespread damage across the region.
Science Behind the Dust Storms
The recent spate of dust storms hitting Delhi-NCR is attributed to a combination of extreme heat and atmospheric instability. High temperatures, with Delhi recording a maximum of 43.5 degrees Celsius – four degrees above normal and the highest for the month so far – led to a significant temperature difference between the scorching ground and the upper atmosphere. This steepened the lapse rate, a measure of how temperature decreases with altitude, thereby increasing atmospheric instability. This instability provides the energy, measured as Convective Available Potential Energy (CAPE), for storms to form and intensify. Experts have termed these events as typical pre-monsoon activity, fueled by high daytime temperatures and adequate moisture in the air, leading to the formation of thundery clouds within a short span. The dry conditions over northwest India, exacerbated by climate change and intense heating across the Indo-Gangetic Plain, have made the soil loose and vulnerable to wind erosion, contributing to the large-scale dust lifting.
Record Wind Speeds and Disruption
The intensity of the dust storms was underscored by record wind speeds. Palam airport recorded gusts of 120 kmph, matching its highest wind speed since 2001. At Pusa, wind speeds reportedly reached 128 kmph, while Safdarjung recorded 64 kmph. These powerful winds caused considerable disruption, including the diversion of at least two flights and delays to over 400 flights at the Indira Gandhi International Airport. Road traffic also faced significant challenges due to reduced visibility. Fallen trees and blocked roads were reported across various localities, including Hauz Khas, Defence Colony, Panchsheel Park, and Vasant Kunj, with uprooted trees damaging boundary walls and pavements.
Meteorological Factors and Forecast
The India Meteorological Department (IMD) classified the event as a “squall” when wind speeds increase significantly over a short period. The dust storms were triggered by a cyclonic circulation over central Pakistan and adjoining Rajasthan, coupled with a trough extending towards Delhi, creating highly unstable atmospheric conditions. While the dust storms themselves generated minimal rainfall, they were often followed by or accompanied by thunderstorms, lightning, and heavy showers. The IMD had issued an orange alert for rain for Thursday, anticipating the approach of a western disturbance. Similar weather conditions, including thunderstorms and gusty winds, were forecasted to continue into Wednesday, with an intensification of pre-monsoon activity expected from June 11, bringing more widespread rainfall across Delhi, Haryana, and Punjab.
Broader Context of Dust Storms in Delhi
Delhi’s vulnerability to dust storms is exacerbated by its geographical location and environmental factors. Situated between the Thar Desert in Rajasthan and the Indo-Gangetic Plain, the region is often in the path of dust-laden winds. While traditionally western India experiences severe dust storm activity, recent years have seen a greater impact on northern and eastern parts of the country. Factors such as climate change, leading to increased temperatures and drier conditions, and land degradation, including deforestation and poor land management, contribute to increased soil erosion and dust lifting. Environmental experts also point to the weakening of the Aravalli Range, which historically acted as a natural barrier against desert winds, as a factor allowing dust storms to reach the capital region more easily. The frequency and intensity of these dust storms are a growing concern, with research indicating a potential increase in such events in the future due to ongoing climate change and urbanization.
❤️ Support Independent Journalism
Your contribution keeps our reporting free, fearless, and accessible to everyone.
Or make a one-time donation
Secure via Razorpay • 12 monthly payments • Cancel anytime before next cycle
(We don't allow anyone to copy content. For Copyright or Use of Content related questions, visit here.)
The Chenab Times News Desk
