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29 September 2026 · National and international edition

Deep Depression Meets Western Disturbance: How Two Weather Systems Drove Uttar Pradesh’s Late-September Deluge

  • Western Disturbances
  • Monsoon Withdrawal
  • Low-Pressure Systems
  • Subtropical Jet Stream
  • Uttar Pradesh
  • Extreme Rainfall

Why it is in the news

A three-day wet spell from 25 to 27 September 2026 caused flood-like conditions across Uttar Pradesh, killing at least 62 people; the State received 66.5 mm of rain against a normal 7.6 mm, with 56 of 75 districts in excess. The India Meteorological Department (IMD) attributed the intense spells to the likely interaction of a deep depression from the Bay of Bengal and a Western Disturbance (WD), even as the southwest monsoon withdraws from north and northwest India.

The exam angle

Issue: Compound events in which mid-latitude Western Disturbances interact with tropical monsoon systems are producing some of north India's most destructive rainfall, often outside the expected season.

Written for APPSC Group 1, TGPSC Group 1 and UPSC Civil Services. More from 29 September 2026 or all current affairs.

Deep Depression Meets Western Disturbance: How Two Weather Systems Drove Uttar Pradesh’s Late-September Deluge · PrepShark