Natural factors

  • Increasing downpour:
    • Southwest monsoon rainfall across the country from June 1 to July 13, 2020 was 12 per cent more than normal for this time, according to the India Meteorological Department (IMD).
    • The southwest monsoon distribution, however, has not been uniform across all regions.
    • Several states in the north, central and southern India have received excess rainfall. Andhra Pradesh received the highest — 61 per cent more than normal — followed by Bihar with an excess rainfall of 57 per cent.
    • Delhi received around 70 millimeters of rain July 19, 2020, the most in the past five years, according to reports.
  • Cyclonic storms and thunderstorms
  • occurrence of high tides impeding the drainage in coastal cities