Jun 28, 2024 -
As expected Monsoon made its one of the strongest approach over the Nation's capital - Delhi & NCR. A massive rainstorm at midnight caused fairly widespread heavy rainfall over Delhi with isolated extremely heavy rainfall marking the onset of Southwest Monsoon 2 days before the normal date. Out of 25 stations nearly 17 experienced heavy rainfall. The highest amount of rainfall recorded at Safdarjung Airport - clocking 228 mm & most of that occurred after mid night to morning. The rainfall at Safdarjung broke 88 years one day rainfall record, just after 235.5 mm rain on 28th June, 1935. Nearby lodi road of Indian Meteorological Department recorded 219 mm of extremely heavy rain. The Airport observatory also experienced heavy rainfall of 107 mm & all occurred in few hours.
The rain storm caused roof collapse of Terminal 1 killing 1 person & injuring few people & damaging vehicles. Any operations in that section is suspended till further notice. This brief rainfall caused water logging across the National capital, disturbing the traffics & causing the normal day to day livelihood to be standstill in some areas. However rainfall conditions has improved from morning with overcast to mostly cloudy conditions. But the spell hasn't over fully as another spell expected in the weekdays.
The reason for this type of intense rainstorm was because a cross trough position over North Delhi with there core positioned over Delhi. A north South trough was extending from the mid level circulation over Northeast Arabian sea to Delhi across another circulation over Rajasthan while another east west trough was extending from Delhi to the low pressure area over Bay of Bengal. This both trough were joined by a circulation over Delhi & Haryana extending up to the same level as others. Due to the influence of the low pressure area over Bay of Bengal good amount of Easterlies were entering up to Delhi at night while the north south trough helping humid winds from Arabian sea to reach near Delhi. This caused development of me so scale convective rainstorm development near Delhi, although the winds were not significant the rain was extreme. Usually this type of monsoon onset is seen over Western Coast or Northeast India, more on Mumbai.
Conditions expected to deteriorate further from tomorrow onwards as a Westerly trough will also joined the above mentioned system while the low pressure area over Bay of Bengal will move northwest towards Delhi. Under its influence heavy rain expected on the weekdays, peaking on Sunday. Extremely heavy rainfall can also occur that day over the northern boundaries of Delhi, on Haryana. This type of conditions will again disrupt the transport service & the International Airport of Delhi. From next week the rainfall activities will decrease but intimate moderate rain shower with isolated intense showers will continue throughout the next week causing a pleasant weather with healthy environment as the air quality index will also come under good due to continuous rainfall activities
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