Tamil Nadu on rain alert? Bay of Bengal system may intensify into Cyclone Arnab by October 26

Chennai: With the northeast monsoon already bringing heavy rain to Tamil Nadu, a fresh weather system over the southeast Bay of Bengal could worsen the state's rainfall woes and intensify into Cyclone Arnab by October 26.

A weather department update reported by Dinamalar identified a new low-pressure area over the southeast Bay of Bengal. The system is expected to strengthen into a depression the following day, before potentially developing into a cyclone on October 26.

If it develops into a cyclone, the system is expected to be named Arnab. Bangladesh proposed the name under the regional cyclone-naming system.

Tamil Nadu faces possibility of intensified rainfall

The emerging system comes as Tamil Nadu is already witnessing heavy rain amid an increasingly active northeast monsoon.

Its further development could intensify rainfall across several districts, raising concerns about additional pressure on the state's civic infrastructure.

Heavier downpours can strain urban drainage systems, disrupt road movement and complicate routine civic operations, particularly in areas already experiencing persistent monsoon rain.

However, the available weather update does not specify which districts could receive the heaviest rainfall or provide estimates of expected precipitation.

There is also no confirmed information in the update on the system's projected landfall location, anticipated wind speeds or likely trajectory.

The precise extent of its impact on Tamil Nadu therefore remains uncertain.

What happens next?

The system's progression from a low-pressure area to a depression, and the possibility of cyclone formation, will be crucial in determining its potential impact.

October 26 is the key date in the current forecast for the possible development of Cyclone Arnab.

Further assessments of the system's intensity and movement will be needed before its likely path and the areas at risk can be established more clearly.

The available update does not mention any specific city-level weather advisories, evacuation measures, school closures or transport restrictions.

The potential threat will become clearer as meteorological assessments of the developing system continue.