Andhra Pradesh, Tamil Nadu on alert as cyclone ‘Murasu’ looms

A cyclone is a large, rotating storm system with strong winds and heavy rain. It forms when warm, moist air rises from tropical ocean water. The falling air pressure draws in more air, and the storm can grow as thunderstorms organize around a centre. Cyclones matter because they can bring destructive winds, flooding and landslides to coastal communities.

Over the Bay of Bengal, warm water provides heat and moisture. Rising air releases heat as it forms clouds and rain. This process can strengthen the storm. Earth’s rotation makes the moving air curve, helping create the cyclone’s circular structure. A system may intensify when conditions remain favourable over the sea.

The article reports that a depression over the Bay of Bengal intensified into the threat named Murasu. It was forecast to bring winds up to 110 kmph near landfall. The storm’s expected effects show why monitoring, evacuation plans and rescue preparations matter before a cyclone reaches land.

Cyclone Murasu is expected to cross the Andhra Pradesh coast near Bapatla on the morning of November 3. The forecast matters because the storm could affect several states, not just the landfall area. Officials in Andhra Pradesh, Tamil Nadu and Odisha have therefore raised preparedness levels and planned early protective action.

In Andhra Pradesh, moderate to heavy rain and isolated extremely heavy showers are expected in south and central coastal districts on November 2. Heavy to very heavy rain is forecast in several areas on November 3 and 4. Of 20 mandals facing extremely heavy rain, nine are in Eluru, five each in Krishna and NTR, and one in Bapatla.

Tamil Nadu may see heavy to very heavy rain in Tiruvallur and Chennai, with other districts also affected. Odisha has placed its southern region, including Ganjam, on high alert. The forecasts support evacuations from low-lying and hilly areas before landfall.

Murasu could produce winds of up to 110 kmph when it crosses the coast. That is strong enough to damage infrastructure, uproot trees and make travel dangerous. The article does not provide a rainfall total in millimetres. Instead, it uses forecast categories such as moderate to heavy to very heavy, and isolated extremely heavy rain.

The clearest infrastructure estimate concerns electricity poles. Preliminary assessments indicate that strong winds could damage around 15,128 poles across 12 districts. The forecast also identifies 20 mandals where extremely heavy rain is expected. Nine of them are in Eluru district, five each are in Krishna and NTR, and one is in Bapatla.

These figures explain why officials are moving personnel and materials to vulnerable places. They are also preparing relief and rescue equipment before the storm arrives. The likely effects remain forecasts, but the scale is large enough to threaten power services and emergency access across multiple districts.

Extreme rain and strong winds can make homes unsafe, flood roads and isolate communities. Water may collect quickly in low-lying areas, while saturated slopes can fail and cause landslides. Debris can block roads, delaying ambulances, rescue teams and essential supplies. People living in vulnerable locations may need to leave before conditions worsen.

The article gives a concrete warning about electricity. Strong winds could damage around 15,128 electricity poles across 12 districts. That could interrupt power supplies and complicate pumping, lighting, hospitals and emergency work. The article also describes a previous landslide in Odisha that buried houses and left people missing, showing how severe rain-related hazards can become.

The article does not state how many homes, roads or communication systems Murasu may damage. In general, cyclone winds and flooding can disrupt phone and internet services when power lines, towers or access routes fail. Authorities are preparing manpower, equipment and materials early to reduce these risks.

Early preparation gives officials time to move people, equipment and supplies before roads become flooded or winds become dangerous. It also helps emergency teams respond faster after landfall. The threat is serious because Murasu is expected to bring heavy to very heavy rain, isolated extreme rainfall and winds up to 110 kmph.

Andhra Pradesh’s chief minister ordered officials to prepare relief and rescue operations and shift personnel and materials to vulnerable areas. Tamil Nadu told district collectors to mobilise administrative machinery, stay vigilant and report incidents to the State Emergency Operations Centre. Odisha ordered evacuations from low-lying areas and hilly terrain before landfall.

These actions are designed to protect people and keep rescue work possible. Odisha’s southern region, including Ganjam, was placed on high alert because it had been severely affected by Cyclone Arnab. The preparations also reflect the possibility of damaged power infrastructure, with about 15,128 poles potentially affected across 12 districts.

Murasu and Arnab are different mainly in timing and reported status. Murasu was an approaching cyclone expected to cross the Andhra Pradesh coast near Bapatla on November 3. Arnab was the previous cyclone to hit the Andhra Pradesh coast and neighbouring Odisha, making landfall on October 28.

The reported wind strengths also differ. Arnab had winds of up to 150 kmph when it made landfall. Murasu was expected to bring winds of up to 110 kmph during landfall. The article names Murasu as India’s choice, meaning “war drum,” while it does not explain Arnab’s name.

Their consequences also differed in the article’s timeline. Odisha’s death toll from Arnab had risen to six, and 10 people remained missing after a landslide destroyed Gidipabali village. Meanwhile, governments were preparing for Murasu, including evacuations in southern Odisha and emergency planning in Andhra Pradesh and Tamil Nadu.

Tropical cyclones often strengthen over warm ocean water because the sea adds heat and moisture to the air above it. Moist air rises and forms towering clouds. As water vapour condenses, it releases heat, which can make more air rise and lower pressure near the storm’s centre. Air then rushes inward, and Earth’s rotation helps the system spin.

A cyclone can weaken after moving over land because it loses its warm-water energy source and encounters friction. Over the ocean, however, it may continue drawing energy from the surface if conditions remain favourable. This helps explain why forecasts track a storm’s path and intensity closely before landfall.

Coastal and low-lying places face particular danger from flooding, powerful winds and difficult evacuation. Hilly areas can also face landslides after extreme rain. In the article, Odisha ordered evacuations from low-lying areas and hilly terrain, while a previous landslide destroyed Gidipabali village and left 10 people missing.