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April 25, 2026Geophysical Research Letters3 citationsOpen Access

Network Divergence Reveals Predictable Pathways of Extreme Rainfall in Central India

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ARAkash Singh RaghuvanshiAAAnkit Agarwal

Key Points

  • The research aims to enhance prediction of extreme rainfall events in Central India, driven by intensified monsoon systems.
  • Utilized network divergence from nonlinear synchronization of rainfall events.
  • Analyzed high-resolution rainfall data to identify patterns and predictive factors.
  • Focused on conditions related to moisture convergence and low-pressure anomalies in Central India.
  • Predicted over 60% of extreme rainfall events exceeding the 95th percentile.
  • Identified west-northwestward low-pressure systems as significant drivers of rainfall.
  • Demonstrated the effectiveness of network-based methods over traditional numerical weather prediction models.

Abstract

Abstract Extreme rainfall events over Central India have increased, reflecting intensified monsoon precipitation driven by factors like urbanization and land use change. With projections indicating further intensification and flood vulnerability, better prediction is critical. We present a physically grounded, operationally actionable framework using network divergence on directed networks from nonlinear synchronization of extreme events. Applied to high‐resolution rainfall data, the method predicts over 60% of events exceeding the 95th percentile in Central India, based on two conditions: preceding extreme rainfall over the east coast along with a low‐pressure anomaly and moisture convergence over Central India. West‐northwestward propagating low‐pressure systems from the Bay of Bengal and vertically integrated moisture convergence are identified as primary drivers. Unlike numerical weather prediction models, our approach is observationally driven, mechanistically interpretable, and computationally efficient, offering a promising route for early warning systems and demonstrating the potential of network‐based methods for predicting climate extremes beyond Central India.

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Cite This Study

Raghuvanshi et al. (2026) studied this question.

synapsesocial.com/papers/69ec5a2588ba6daa22dabafahttps://doi.org/10.1029/2026gl121973
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