Indian authorities shut schools, evacuated hundreds of thousands of people and cancelled trains in parts of the country as rescue teams braced on Thursday for a tropical storm brewing in the Bay of Bengal.

Tropical Storm Dana is expected to intensify, bringing winds of 100-110 km/h and gusts up to 120 km/h, as it pushes toward the country’s eastern coastline, according to the India Meteorological Department. The department said in a subsequent statement on X, posted early Friday, that the “landfall process” had begun.

Climate scientists say severe storms are becoming more frequent in South Asia. Global warming driven by planet-heating gases has caused them to become more extreme and unpredictable.

The storm is expected to affect most parts of the eastern state of Odisha, which saw strong winds and rain on Thursday morning. Authorities have closed schools, cancelled more than 200 trains, suspended flights and warned fishermen not to venture out to sea.

Downpours in West Bengal state

Downpours also began lashing areas of neighbouring West Bengal state, where some districts are also likely to be hit, prompting officials there to be on high alert.

Odisha’s Chief Minister Mohan Charan Majhi told the Press Trust of India news agency that around 300,000 people have been evacuated from vulnerable areas, adding that three districts were likely to be severely affected.

Authorities plan to evacuate over one million people from 14 districts. Several teams of aid and rescue workers have also been deployed to the state, which is prone to severe cyclones and storms.

“The government is fully prepared to tackle the situation. You are in safe hands,” Majhi said.

Neighbouring Bangladesh is also watching Dana’s path closely.

In a weather bulletin issued early Friday, the Bangladesh Meteorological Department said Dana will bring heavy rain to coastal areas and off-shore islands. Some low-lying areas in coastal districts “are likely to be inundated” by wind-driven storm surge, the department said.

India’s eastern coasts have long been prone to cyclones, but the number of intense storms is increasing along the country’s coast.

Last year was India’s deadliest cyclone season in recent years, killing 523 people and costing an estimated $2.5 billion US in damage.