TNPSC Thervupettagam

Monsoon Floods in Southeast Asia

December 4 , 2025 16 hrs 0 min 6 0
  • Heavy monsoon rains in Indonesia, Sri Lanka, Thailand, and Malaysia caused widespread floods and landslides, killing at least 1,100 people.  
  • Indonesia was the worst affected, with over 600 deaths and hundreds reported missing.
  • Monsoons are natural weather phenomena, but their effects can be worsened by climate change, which increases the intensity of rainfall and storms.
  • Monsoons are seasonal wind patterns that bring heavy rainfall to affected regions.
  • In November 2025, tropical cyclones combined with monsoon rains caused severe floods and landslides in Indonesia, Sri Lanka, Thailand, Malaysia, and Vietnam.
  • Cyclone Senyar formed just north of the equator in the Strait of Malacca, a rare event for this region.
  • Typhoon Koto caused flash floods in the Philippines before reaching Vietnam, and Cyclone Ditwah hit Sri Lanka.
  • Tropical cyclones are powerful spinning storms with strong winds and rain; they are called hurricanes in the Caribbean/North America, typhoons in East Asia, and cyclones in the Indian Ocean.
  • Human-caused climate change is making these storms more intense, producing heavier rainfall and stronger cyclones.

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