IndiGo has issued a travel advisory regarding disruptions to flights to and from Tamil Nadu cities which continue to be impacted due to adverse weather conditions.

With northeast monsoon season's first cyclone likely to form over the Bay of Bengal on Wednesday, IMD has upgraded its rain alert for Chennai.

The IMD warns that a deep depression over the Southwest Bay of Bengal is likely to strengthen into a cyclonic storm within 24 hours, potentially impacting Tamil Nadu's coast. Authorities urge readiness and caution as the system develops.

Once intensified, the storm will be identified as Fengal, a name proposed by Saudi Arabia. This is the second cyclone in the post-monsoon season to affect the Indian coast after Cyclone Dana, which crossed Odisha as a ‘severe’ category storm in late October.

If the deep depression intensifies into a cyclone, it will be named as Fengal, according to the rules of the World Meteorological Organisation (WMO) on naming cyclones.

The deep depression lay about 310 km southeast of Trincomalee, 590 km south-southeast of Nagappattinam, 710 km south-southeast of Puducherry and 800 km south-southeast of Chennai