Extreme Heavy Rainfall

Extreme Heavy Rainfall is defined as rainfall greater than 100 mm in 24 hours.

Heavy rainfall can lead to numerous hazards, for example:

  • Flooding, including risk to human life, damage to buildings and infrastructure, and loss of crops and livestock
  • Landslides, which can threaten human life, disrupt transport and communications, and cause damage to buildings and infrastructure.
  • Where heavy rainfall occurs with high winds, risk to forestry crops is high.

Yang Yang, Ed. n.d. “Extreme Weather - Heavy Rainfall.” NIWA. Accessed April 14, 2021. https://niwa.co.nz/natural-hazards/extreme-weather-heavy-rainfall.

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