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Chennai logs 361.9mm rain in 24 hours, IMD warns

By Drooid · Oct 19, 2026, 10:27 AM UTC · How we work

Summary

Chennai Faces Record Rain

India’s Meteorological Department (IMD) reported Chennai received 361.9 mm rain in 24 hours on October 17, the heaviest since Cyclone Michaung.
IMD issued orange alerts for heavy rain in six districts.
Ennore Port logged 222.5 mm rainfall and Parrys Corner recorded 36 cm.
Greater Chennai Corporation deployed over 15,000 workers to clear 35 roads and 16 subways.
State officials mobilised 140,000 personnel and 250 boats for flood response.

Summary

IMD Issues Rain Advisory

IMD forecasts widespread rain from October 19-24 across Kerala, Karnataka, Lakshadweep and Andhra Pradesh, with thunderstorms and gusty winds.
Madden-Julian Oscillation is strong over the Indian Ocean, boosting moisture for South India’s northeast monsoon.
Positive Indian Ocean Dipole has emerged, potentially enhancing convection and rain over Tamil Nadu, though effects are not guaranteed.
IMD issued a fishermen advisory urging caution in the southwest Arabian Sea because of expected heavy showers.

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Chennai Faces Record Rain

India’s Meteorological Department (IMD) reported Chennai received 361.9 mm rain in 24 hours on October 17, the heaviest since Cyclone Michaung.
IMD issued orange alerts for heavy rain in six districts.
Ennore Port logged 222.5 mm rainfall and Parrys Corner recorded 36 cm.
Greater Chennai Corporation deployed over 15,000 workers to clear 35 roads and 16 subways.
State officials mobilised 140,000 personnel and 250 boats for flood response.

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