What caused the 2015 South Indian floods?
Q: What caused the 2015 South Indian floods?
A: The 2015 South Indian floods were caused by heavy rainfall from the annual northeast monsoon in November–December 2015.
Q: What regions were mainly affected by the disaster?
A: The mainly affected regions were Coromandel Coast region of the South Indian states of Tamil Nadu, Andhra Pradesh, and the union territory of Puducherry and especially the most devastated area, the city of Chennai.
Q: How many people were killed in this disaster?
A: More than 500 people were killed in this disaster.
Q: How many people were displaced due to this disaster?
A: Over 18 lakh (1.8 million) people were displaced due to this disaster.
Q: When does a large area of south India receive its annual rainfall from the northeast monsoon?
A: From October to December each year, a very large area of south India receives up to 30 percent of its annual rainfall from the northeast monsoon (or winter monsoon).
Q: When did a low pressure system form that contributed to flooding in coastal areas?
A: On 8 November 2015, during the 2015 North Indian Ocean cyclone season, a low pressure area consolidated into a depression and slowly intensified into a deep depression before crossing the coast of Tamil Nadu near Puducherry on 9 November.
Q: Where did 24-hour totals peak at during this event?
A: 24‑hour totals peaked at 370 mm in Ponneri during this event.
