First published 10/4/2026, 8:02:15 AM · Last updated 10/4/2026, 8:02:15 AM

Light to Moderate rain with Thunderstorm and Lightning is very likely to occur at isolated places over Chengalpattu, Chennai, Kancheepuram, Thiruvallur, CMB, DGL, MYL, NPT, PDK, RMD, Sivaganga, Thanjavur, Theni, Nilgiris, Thiruvarur, Thoothukkudi, Tiruchirappalli, Karaikal in next 3 hours.

IMD-Chennai issued an alert for light to moderate rain, thunderstorms, and lightning at isolated places across the listed areas. The alert reports moderate severity and conditions very likely within three hours.

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: 6/10How 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: 3/10How 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 alert covers multiple districts and identifies a three-hour timeframe for the expected conditions.

Location

Sources

Light to Moderate rain with Thunderstorm and Lightning is very likely to occur at isolated places over Chengalpattu, Chennai, Kancheepuram, Thiruvallur, CMB, DGL, MYL, NPT, PDK, RMD, Sivaganga, Thanjavur, Theni, Nilgiris, Thiruvarur, Thoothukkudi, Tiruchirappalli, Karaikal in next 3 hours.National Disaster Management Authority (NDMA) / SACHET Usage terms

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