Extension of Monsoon Troughs from Rajasthan to Manipur

08-Sep-2026 04:29 PM

New Delhi. One trough of the Southwest Monsoon extends from Rajasthan, Haryana, Jharkhand, and West Bengal up to Tripura, while a second trough stretches from northeastern Rajasthan to Manipur, passing through Bihar, northern Jharkhand, the hills of West Bengal, and southern Assam. This is a low-level trough, indicating the likelihood of significant rainfall. A third monsoon trough has also become active, extending from southern Gujarat to Jharkhand; this is also considered a pressure system.

Meanwhile, a Western Disturbance is observed over Afghanistan, which could influence the weather in the northern parts of the country. Under the influence of these systems, heavy rainfall is likely across most regions of the country, particularly in Northwest India. Additionally, heavy rainfall is expected to continue in the eastern, northeastern, and central regions until September 10.

The monsoon has remained sluggish and inactive in South India for a long period, but an increase in its activity and momentum is now anticipated. However, the Meteorological Department has not predicted any rainfall significant enough to be decisive for Kharif crops in the region. A cyclonic circulation exists over the coastal areas of Tamil Nadu and the adjacent Bay of Bengal, while a monsoon trough extends from south interior Karnataka through Tamil Nadu to the Gulf of Mannar. Under these influences, light to moderate rainfall is expected across the southern peninsula. Kharif crops in South India are in dire need of heavy rainfall.