Mercury Rises Sharply Over Delhi: Monsoon Showers Early Next Week

Key Takeaways:

• Delhi is gradually showing weather patterns associated with the approaching withdrawal of the southwest monsoon.
• Safdarjung recorded 36.1°C, the highest maximum temperature of September so far and about 3°C above normal.
• Light to moderate showers are more likely over Delhi and adjoining areas between September 14 and 16.
• Broad weather clearance is expected from September 18 onwards, which may prepare Delhi for the impending monsoon withdrawal.
• Forecast Validity: Next one week.

Monsoon withdrawal from Delhi is drawing closer. The announcement of withdrawal is always retrospective, and therefore, the pattern starts building up much in advance of the official date. The normal date for the retreat of the monsoon is 25 September. Last year, it was a day prior, on 24 September. Prominent symptoms preceding the withdrawal are reversal of winds, reduction in moisture and clouds, rise in day temperature, relocation of the monsoon trough, and scanty parting showers.

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The city and suburbs witnessed mostly clear skies yesterday, and no change is likely for the next three days, till Saturday. Base station Safdarjung recorded a maximum temperature of 36.1°C, the highest this month so far, and also about 3°C above normal. Earlier, the city had recorded a high of 36°C on the first day of this month and dropped thereafter. A similar range of temperature, maybe with a further marginal rise, is likely today and tomorrow.

There is likely to be a twist in the weather conditions early next week. A monsoon low-pressure area has formed over the Bay of Bengal. The deep inland movement of the system over parts of Madhya Pradesh around the weekend and later will drag the monsoon trough far to the south of its normal position. Subsequently, under the influence of a passing western disturbance across the mountains, the trough will gain proximity to Delhi. This will trigger light to moderate showers over and around the capital city.

The chances of showers are higher between 14-16 September. However, due to changes during the process of shifting, one odd stray shower, for a brief period, may also occur on Saturday-Sunday. Broad clearance over the region can be expected from 18 September onwards. This break may also prepare the capital city for the impending monsoon withdrawal.

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