Fair Weather Conditions Over Northern Plains This Week: Rainfall Follows Next Week
Image: AI-Skymet
Mid-September onwards is the transition period for the northern plains. The active monsoon conditions start retreating, beginning with Rajasthan and galloping thereafter across the rest of the plains. Despite some precursors to this pull-back, the formal announcement is likely to overshoot the scheduled window of withdrawal. Monsoon rains have taken a ‘break’, and it is likely to continue for the remaining days of this week. The monsoon activity may recommence, albeit on a lighter note, over the plains of North India sometime next week.
The monsoon depression, which travelled across Rajasthan and Gujarat, has finally got subsumed over the Northeast Arabian Sea. The winds have turned relatively drier now over South Pakistan and West Rajasthan. Also, there is anticyclonic curvature developing over East Rajasthan and West Madhya Pradesh—quite normal at this time of the year. These are, of course, the early signatures of the retreat of monsoon. However, these changes will get subjugated shortly on account of a lively interaction between the westerly system and monsoon circulation early next week.
Prior to the ensuing weather activity, preceding the interaction will be a dry and hot spell covering parts of Punjab, Haryana, Rajasthan, and Delhi. The monsoon trough, the activating factor, will stay at large. The western disturbance as an upper air system is unlikely to arrive before 16th September. This is the time when the monsoon system from the Bay of Bengal will reach parts of Madhya Pradesh, Maharashtra, and the peripherals of Rajasthan and Gujarat. These two systems will interact and result in a sudden shift of weather pattern over the northern plains. Prior to that, mostly clear sky, fair weather conditions, light breeze, drop in humidity, and rise of mercury will dominate most parts of Punjab, Haryana, Rajasthan, and Delhi. The process of monsoon withdrawal may commence following broad clearance in the fourth week of the month, starting with West Rajasthan and border areas of Punjab.
