Low Pressure Area Likely in Bay of Bengal; Heavy Rain Alert for Tamil Nadu
12 Oct 2026Updated 2 hr ago1 source
AI translation — this coverage was originally reported in Tamil; the translation may contain errors. Read the original reports below.
The Chennai Meteorological Department has announced that a low-pressure area is likely to form over the southeast Bay of Bengal around October 13. Driven by atmospheric circulations over the Gulf of Mannar and the Andaman Sea, several districts in Tamil Nadu are expected to receive heavy rainfall accompanied by thunderstorms and gusty winds up to 50 km/h over the coming week.
NIKAN Intelligence
What happened
An atmospheric circulation over the Gulf of Mannar and another over the south Andaman Sea are expected to trigger a low-pressure area in the southeast Bay of Bengal around October 13. This weather system will bring widespread rain, thunderstorms, and strong winds to Tamil Nadu.
Why it matters
The heavy rain warning affects multiple districts, including major urban and agricultural hubs. High winds of 40 to 50 km/h and intense downpours could lead to localized waterlogging, traffic disruption, and safety concerns for residents.
What we know
- An atmospheric circulation is active over the Gulf of Mannar at 0.9 km altitude.
- Another circulation is active over the south Andaman Sea up to 5.8 km altitude.
- A low-pressure area is anticipated to form on October 13.
- Winds of 40 to 50 km/h with thunderstorms are expected in warning zones.
- Heavy rainfall alerts have been issued for multiple districts sequentially from October 12 through October 18.
What we don't know
- The exact trajectory and future intensification of the low-pressure system beyond its initial formation.
- Whether this system will eventually develop into a depression or cyclone.
What's next
The low-pressure area is projected to form on October 13, with rain activity expected to intensify and expand across more districts of Tamil Nadu from October 14 onwards.
Generated by NIKAN's analysis engine from the cited reports only. Nothing here is invented; gaps are shown as unknowns. Always read the original coverage linked below.
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AI translation — may contain errors
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