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Monsoon Surprise: Low-Pressure System Aids India's Rain
9 Sep
Summary
- A new low-pressure system over the north Bay of Bengal aids monsoon.
- South India faces a 27% deficit, the season's highest deficit.
- Heavy rain is forecasted for Tamil Nadu, Kerala, and Odisha.
A developing low-pressure system over the north Bay of Bengal is poised to invigorate India's monsoon season, even as it begins to withdraw from northwestern parts of the country. This system is a rare late-season development, potentially leading to less overall rain but more intense spells where weather patterns align favorably.
The South Peninsula, which has experienced the most significant rainfall deficit of 27% due to El Niño-linked conditions, may see some relief. The emerging system, expected to consolidate into a low-pressure area by Thursday, could track southwestward along the coast, possibly reaching the Odisha-north Andhra Pradesh coast by Saturday.
This trajectory is crucial for rainfall distribution. The system's moisture injection can sustain subcontinent rainfall even as the broader monsoon circulation weakens. While El Niño increases the likelihood of erratic rainfall with longer dry spells, it doesn't halt precipitation entirely. Heavy rain is forecasted for Tamil Nadu, Puducherry, Karaikal, Kerala, and Mahe, with significant rainfall also expected in Odisha, West Bengal, Jharkhand, and Bihar.
