Off-Nadir Delta

Heavy rainfall across Tamil Nadu as northeast monsoon intensifies

Titles and summaries are AI-extracted from news reporting; every source is linked below. Event id b5592ee8-7dac-45b3-a278-f30435b1a12b.

Where
Chennairesolved to locality13.084, 80.270
When
Occurrence date not stated by reportingFirst reported 2026-10-17 · last update 2026-10-20
Sourcing
26 reports26 reports across 12 outlets · independence not established
How far this got
localizednamed facility unresolvedRadar coverage

Summary

The India Meteorological Department forecasted isolated very heavy rainfall of 11-20 cm across Tamil Nadu, Puducherry, and Karaikal from October 20-25, with a yellow alert issued for 17 Tamil Nadu districts including Chennai. Rainfall was recorded at isolated places across Tamil Nadu, with Coronation Nagar receiving 7 cm during one hour and other locations such as Kozhikode (10 cm) and Tondi (5 cm) also recording significant precipitation. The wet conditions were attributed to an easterly wave and a cyclonic circulation over the southwest Bay of Bengal. The Tamil Nadu government prepared 2,372 relief camps in Chennai with accommodation, food, and supplies, while the Greater Chennai Corporation deployed emergency response teams to address waterlogging and fallen trees. Significant flooding occurred in areas including Vyasarpadi, Tondiarpet, Velachery, and Tiruvottiyur, with water accumulation reported in 35 areas that were addressed using motor pumps.

What imagery could confirm

Which satellite to use, what to look for and why. Part of the event detail on Pro.

What remains unresolved

  • named facility unresolved

Timeline

19 recorded change(s). The ledger starts when this event was first folded: the initial observation is not recorded as a change, so an empty timeline means nothing has moved since, not that nothing is known.

  • 2026-10-20member countour measurement25 → 26reports joined

14 more change(s) — the values are part of the event detail on paid plans. 4 change(s) before the history shown here.

Sources

Grouped by outlet. Syndication is not collapsed, so several outlets can carry one wire story — the count is breadth of carriage, not independent confirmation.

26 reports in all; the full list with the facts taken from each is part of the event detail on Pro.

Related events

1 related event(s) and 12 place(s) or facilities — the same facility, place, actor or campaign. Part of the event detail on Pro.

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