Cyclone Arnab starts landfall process along Andhra Pradesh coast, triggers heavy rain and strong winds

A cyclone landfall occurs when the storm’s centre crosses from the sea onto land. It is a critical stage because coastal communities begin experiencing the cyclone’s strongest winds, intense rain and dangerous conditions. Storm impacts can continue after the centre moves inland.

Arnab’s landfall process began along the Andhra Pradesh coast around 1:10am on Wednesday, according to the IMD. At that time, the storm was moving westwards over the west-central Bay of Bengal, close to Andhra Pradesh and Yanam, at 10 kmph. Its winds were estimated at 125-135 kmph, with gusts up to 150 kmph.

The cyclone was expected to cross between Bapatla and Visakhapatnam, south of Yanam, between 2am and 4am. Winds were expected to weaken gradually after landfall. Authorities still remained on high alert because heavy rain, strong winds and disruption could continue across affected areas.

Arnab was a severe cyclonic storm with sustained wind speeds estimated at 125-135 kmph. Gusts could reach 150 kmph, making the storm capable of damaging infrastructure, disrupting transport and creating dangerous conditions for people outdoors. The article describes potentially damaging winds along the coast.

The cyclone itself was moving westwards at 10 kmph over the west-central Bay of Bengal. This forward speed describes how quickly the storm’s centre was travelling, not how fast its winds were blowing. The two measurements show both the storm’s movement and its intensity.

Arnab was expected to cross the coast between Bapatla and Visakhapatnam between 2am and 4am. After reaching land, its winds were expected to gradually weaken. However, authorities kept rescue and relief teams ready because rainfall, flooding and local damage could still affect communities after the crossing.

Arnab was expected to cross the Andhra Pradesh coast between Bapatla and Visakhapatnam, south of Yanam. This made coastal Andhra Pradesh the storm’s immediate danger zone. The expected crossing area helped authorities decide where to focus evacuations, shelters, medical support and emergency supplies.

Andhra Pradesh and Odisha were especially exposed in the article because the storm was approaching the Andhra coast while rain had already been reported in parts of Odisha. Andhra Pradesh moved people from vulnerable areas and shifted 1,351 pregnant women to hospitals. Odisha moved more than 30,000 people to cyclone shelters and prohibited entry to sea beaches.

The threat extended beyond the coastline. Schools closed in 16 Odisha districts, trains and flights were cancelled, and Jharkhand issued a yellow alert for heavy rain. These measures show that a cyclone’s effects can spread inland through rain, wind and transport disruption, even beyond the landfall point.

When a severe cyclone makes landfall, powerful winds and heavy rain move across populated areas. Winds can damage buildings, trees, power systems and transport facilities. Rain can flood roads and homes, while rough seas make beaches and coastal travel unsafe. Daily routines often stop as authorities protect residents.

Arnab’s effects were already visible before landfall. Its winds were estimated at 125-135 kmph, with gusts up to 150 kmph. At least 21 flights were cancelled at Vijayawada and Visakhapatnam airports, while several railway zones cancelled services. Odisha closed schools in 16 districts and prohibited entry to sea beaches.

The immediate outlook included continued rain and strong winds around the crossing area. Winds were expected to weaken gradually after landfall, but authorities maintained high alert. The cancellations, closures and evacuations were designed to reduce exposure while rescue and relief teams prepared for damage and difficult travel conditions.

Evacuations reduce danger by moving people away from exposed homes, coastlines and flood-prone areas before conditions become too severe. Cyclone shelters provide stronger, safer places to stay. Early movement is vital because roads may become dangerous or unusable once winds and rain intensify.

Andhra Pradesh arranged 2,131 shelters across 20 districts and put 1,087 medical teams on standby. Officials also made 8,281 emergency beds and 1,274 ambulances available. Authorities shifted 1,351 pregnant women to hospitals and stocked two months of essential commodities at 14,686 ration shops.

These measures address different risks at once. Shelters protect evacuees, medical teams treat injuries and illness, beds support hospitals, and ambulances move patients. Food stocks help communities remain supplied if travel is disrupted. Mobile alerts sent to 2.70 crore people also helped warn residents before the storm’s arrival.

The article mentions that Bay of Bengal storms tend to form after the monsoon, but it does not explain the science. In general, tropical cyclones need warm ocean water, abundant moisture and a pre-existing weather disturbance. These ingredients provide heat and rising air that can organise into a rotating storm.

After the southwest monsoon, the Bay of Bengal can remain warm and humid. Seasonal changes can also make winds at different heights more similar in speed and direction. Lower wind shear allows a developing system to stay vertically organised instead of being torn apart. A disturbance can then gather thunderstorms around a developing centre.

If the ocean remains warm and the atmosphere continues supplying moisture, the storm may strengthen while moving over water. It weakens after moving over land or cooler water because its energy and moisture supply decline. Arnab’s forecast landfall shows why the timing of these conditions matters for coastal preparedness.

A tropical cyclone is a large, rotating low-pressure storm that forms over warm tropical or subtropical seas. It produces organised thunderstorms, strong winds and heavy rain. Its main energy source is heat released when moist air rises, cools and condenses into clouds and rain.

Warm ocean water causes moist air near the surface to rise. Air pressure falls, drawing in more air from around the system. Earth’s rotation bends this moving air, helping create a circular spin. If the atmosphere is humid and winds at different heights do not disrupt the system, thunderstorms can organise around the centre.

The storm can strengthen while it remains over warm water and has a steady moisture supply. It usually weakens after landfall because land cuts off much of that ocean energy and increases friction. Arnab’s estimated 125-135 kmph winds and heavy rain reflect this organised tropical cyclone structure.