First published 9/23/2026, 4:49:15 PM · Last updated 9/23/2026, 4:49:15 PM

Light to Moderate rain with Thunderstorm with Lightning is likely to occur at isolated places over Chengalpattu, Chennai, Coimbatore, Cuddalore, Kancheepuram, Tenkasi, The Nilgiris, Thiruvallur, Viluppuram, Virudhunagar, Pondicherry in next 3 hours.

IMD-Chennai forecasts light to moderate rain with thunderstorm and lightning at isolated places over listed districts of Tamil Nadu and Pondicherry within the next 3 hours. Issuer notes severity: Moderate and advises to follow SDMA guidelines.

Categories: severe-weather-and-natural-disasters

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 8/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 3/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 2/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 3/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Positivity: 2/10How harmful or beneficial the event is, from strongly harmful (1) to strongly positive (10).
Urgency: 7/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

The official IMD-Chennai advisory (severity: Moderate; urgency: Expected) warns of convective rain/thunderstorm with lightning in the next 3 hours for multiple districts and advises following SDMA guidelines.

Location

Sources

Light to Moderate rain with Thunderstorm with Lightning is likely to occur at isolated places over Chengalpattu, Chennai, Coimbatore, Cuddalore, Kancheepuram, Tenkasi, The Nilgiris, Thiruvallur, Viluppuram, Virudhunagar, Pondicherry in next 3 hours.

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