Delhi witnessed a sweltering weekend with rising mercury and high humidity. Muggy weather conditions prevailed on both days, with very little clouds and a fair amount of sunshine. The base station at Safdarjung touched a day high of 36°C, yesterday, after a gap of nearly 20 days. Earlier, the maximum temperature of 36°C was recorded during the first week, on 01st and 03rd September. In Delhi region, Pitampura was the highest with mercury shooting to 37.8°C, yesterday.
The seasonal monsoon trough, though not clearly discernible due to variable wind patterns below the friction level, seems to be running slightly south of its normal position. It is likely to hold this position for the next two days and thereafter, have a significant southward shift, to stream in, easterly winds in the lower levels. This will lead to a further increase in the humidity levels. However, a few light spells of retreating monsoon showers are likely, albeit for a short duration, almost daily, between the 25th and 29th of September 2024. The intensity and spread could be more on the 27th and 28th of September.
The twist in the weather conditions will be associated with the formation of a monsoon low-pressure area over the Bay of Bengal (BoB). The low-pressure area is likely to form later in the day over northwest and adjoining west-central BoB. This system will move eastward, along the east-west oriented shear zone, extending from North Coastal Andhra Pradesh to North Konkan region.
The capital city will come under the influence of the weather system. Though, Delhi will be placed on the far outer right peripherals but will still have residual weather activity between the 25th and 29th of September. Actually, a westerly trough moving across the mountains and its induced circulation over the border areas of North Rajasthan and Pakistan region will act as a trigger, of possibly the last spell of monsoon showers for Delhi. The rising mercury will take a dip and fairly comfortable weather conditions will prevail, more so, between the 26th and 28th of September.
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