# Stormy Spell Ahead for Tamil Nadu as Bay of Bengal Circulation Triggers Thunderstorm, Rain and 50 kmph Wind Alerts

> A cyclonic circulation over the Bay of Bengal is set to bring thunderstorms, gusty winds and heavy rain to several Tamil Nadu districts on Monday and Tuesday, even as the mercury climbed to 39-40 degrees Celsius in places like Chennai and Nagapattinam.

**Type:** article · **Category:** India · **Published:** 2026-06-15 · **Source:** TrendKia
**Canonical:** https://trendkia.com/en/national/tamil-nadu-para-mndaraya-tuphani-mausama-bngala-ki-khari-ke-chakravati-parisncha-947 · **Language:** English
**Tags:** Tamil Nadu weather, Bay of Bengal cyclone, IMD alert, thunderstorm rain, Chennai temperature, heavy rain forecast, cyclonic circulation

Tamil Nadu is bracing for another swing in its weather. After a brief, relatively cooler stretch, temperatures across the state have shot up again — and at the same time, the skies are showing signs of turning stormy. The Regional Meteorological Centre (RMC) has issued an alert for several districts, warning of thunderstorms, strong winds and rain, with the possibility of localised heavy downpours in parts of the state over the coming days.

## What is driving the change
The trigger lies out in the Bay of Bengal. According to the IMD, a cyclonic circulation over the bay is likely to push the state's weather into a stormy phase. This circulation stretches from the west-central Bay of Bengal down to southern Tamil Nadu and remains active through the southwest Bay of Bengal. The weather office says the system is sitting at roughly 3.1 to 4.5 kilometres above sea level, and its influence is expected to step up rainfall activity across the state.

## Districts in focus on Monday
On Monday, parts of Tiruchirappalli, Perambalur, Ariyalur, Namakkal and Salem districts could see moderate rain accompanied by thunder and lightning. Winds gusting up to 50 kilometres per hour are also forecast during this period. The weather department has advised people to stay alert and exercise caution while the bad weather lasts.

## An intensifying spell on Tuesday
The rain is expected to spread further on Tuesday. Isolated heavy rainfall is forecast for Namakkal, Salem, Tiruchirappalli, Perambalur, Ariyalur, Kallakurichi, Thanjavur, Tiruvarur and Mayiladuthurai districts. With strong winds and lightning likely in these areas, the administration has been told to remain on guard. Ramanathapuram district, too, is expected to see more active weather from Tuesday, with spells of heavy rain, thunderstorms and gusty winds. Weather experts say the combined effect of marine and land-based conditions could cause the weather here to change rapidly.

## No respite from heat in Chennai
The capital Chennai, however, is not in line for any major rain. The sky over the city is expected to remain partly cloudy on Monday, but the maximum temperature could touch 39 degrees Celsius, leaving residents to contend with humidity and heat.

## A scorching Sunday
On Sunday, several parts of the state recorded above-normal temperatures. Nagapattinam was the hottest spot, where the mercury climbed to nearly 40 degrees Celsius. Madurai logged 39.5 degrees Celsius and Tiruchirappalli around 39 degrees Celsius, while severe heat was also felt across Chennai, Cuddalore, Karur Paramathi and Thanjavur, among other areas. Meteorologists note that the high temperatures and favourable atmospheric conditions could help thunderclouds build up over the state's interior districts, bringing scattered rainfall and heavy showers at some places in the days ahead.

## What this means for you
- **Across India:** This Bay of Bengal cyclonic circulation can shift weather over south India, so keep an eye on IMD updates before planning travel or outdoor work.
- **In Tamil Nadu:** Residents of Tiruchirappalli, Salem, Namakkal, Thanjavur and other districts should stay cautious during Monday-Tuesday's 50 kmph winds, lightning and heavy rain, while Chennai faces heat and humidity with temperatures near 39 degrees.

## Questions & Answers

### 1. Why is Tamil Nadu's weather turning bad?
A cyclonic circulation over the Bay of Bengal, stretching from the west-central bay to southern Tamil Nadu and active at around 3.1 to 4.5 kilometres above sea level, is driving the change.

### 2. Which districts have a rain and strong-wind warning for Monday?
Tiruchirappalli, Perambalur, Ariyalur, Namakkal and Salem are likely to see moderate rain, thunderstorms and winds gusting up to 50 kilometres per hour.

### 3. Where could heavy rain fall on Tuesday?
Isolated heavy rain is possible in Namakkal, Salem, Tiruchirappalli, Perambalur, Ariyalur, Kallakurichi, Thanjavur, Tiruvarur and Mayiladuthurai districts, with active weather also expected in Ramanathapuram.

### 4. Will it rain in Chennai?
No major rain is expected in Chennai; the sky will be partly cloudy on Monday and the maximum temperature could reach 39 degrees Celsius.

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