The Regional Meteorological Centre predicts continued scattered rainfall across Tamil Nadu, with heavy downpours expected in Nilgiris and Theni districts through August 18.

Key Takeaways

  • Scattered rainfall will continue in northern and Western Ghats regions until August 18.
  • Heavy rain and gusty winds (40-50 kmph) predicted for Nilgiris and Theni.
  • Rainfall is expected to increase significantly in north coastal districts from August 16-18.

Scattered rainfall is expected to persist across several parts of Tamil Nadu, particularly in the northern regions and the Western Ghats, until August 18. According to the Regional Meteorological Centre (RMC), while the intensity will vary by location, the ongoing wet spell is set to keep temperatures under check across most of the state.

Thunderstorms, a common occurrence since the beginning of August, are forecasted to continue. The RMC has issued specific warnings for the Nilgiris and Theni districts, predicting heavy rainfall accompanied by gusty winds reaching speeds of 40-50 kmph on Thursday and Friday.

Why This Matters

BozokMedia analysis shows that a low-pressure area persisting over the north Bay of Bengal off the West Bengal-Bangladesh coast is playing a crucial role. As this system moves inland, it encourages lower-level wind convergence, which facilitates convective activity and sustains the wet weather over Tamil Nadu.

V.R. Durai, Head of the Regional Weather Forecasting Centre, expects a significant surge in rainfall between August 16 and 18, specifically in north coastal areas.

Inland districts such as Madurai, Sivaganga, Ariyalur, Salem, and Kallakurichi are likely to experience moderate rainfall. However, moisture incursion may be limited in north interior regions, meaning places like Erode, Tiruchi, and Karur might still face relatively hot conditions. Tiruchi recently recorded a peak temperature of 39.8 degrees Celsius.

Historical Context

The RMC had previously forecasted that rainfall for this month would be normal or above normal. The consistent precipitation since early August is helping bridge the seasonal deficit. Currently, the state's rainfall deficiency stands at 9%, which remains well within the normal operational range.

Did You Know?: Evening thunderstorms in coastal areas are often triggered by cool easterlies setting in between 3 p.m. and 4 p.m.

Frequently Asked Questions

1. Which districts are at highest risk for heavy rain?
The Nilgiris and Theni districts are under alert for heavy rainfall and high-speed winds.

2. Will the rain help reduce the heat in Tamil Nadu?
Yes, the wet spell is expected to keep temperatures under check across most parts of the state.