Cyclone Arnab is described as a powerful tropical cyclone that developed over the Bay of Bengal in October 2026. It intensified into a Very Severe Cyclonic Storm and moved towards India’s eastern coast. According to forecasts issued on 27 October 2026, the storm was expected to make landfall near the Andhra Pradesh–Yanam coast on 28 October. Authorities initiated precautionary measures as the cyclone threatened coastal areas with heavy rainfall, strong winds, and storm surges. Aspirants preparing for civil service examinations can use such disaster-management topics to strengthen their current affairs knowledge when they buy an APSC & UPSC combined course.
This article explains Cyclone Arnab 2026, its formation, impacts and important geographical concepts for UPSC, APSC and State PCS examinations.
Why Is Cyclone Arnab in the News?
Cyclone Arnab recently made headlines after intensifying over the Bay of Bengal and approaching the Andhra Pradesh coast. The cyclonic system developed over the Bay of Bengal and intensified on 26 October 2026. Moreover, the India Meteorological Department (IMD) classified it as a Very The cyclone intensified into a Severe Cyclonic Storm, with forecasts indicating a possible landfall along the Andhra Pradesh–Yanam coast on 28 October 2026. While Andhra Pradesh faced the greatest coastal threat, Odisha and parts of West Bengal were also expected to experience heavy rainfall. Aspirants attending APSC online classes can study such weather events to improve their understanding of disaster management, climate-related risks, and current affairs for competitive examinations.
What Is Cyclone Arnab?
Cyclone Arnab is a tropical cyclone that developed over the Bay of Bengal in October 2026. It formed over warm ocean waters and intensified into a Very Severe Cyclonic Storm. Moreover, the India Meteorological Department (IMD) forecast its landfall near the Andhra Pradesh-Yanam coast on 28 October 2026.
The cyclone’s key features include:
- Origin: The cyclone developed over the warm waters of the Bay of Bengal.
- Intensity: The storm reached the Very Severe Cyclonic Storm category, with sustained wind speeds of 118-166 km/h under IMD classification.
- Affected Areas: It primarily threatens coastal Andhra Pradesh. Additionally, Odisha and parts of West Bengal may experience heavy rainfall.
- Major Threats: Strong winds, intense rainfall and storm surges may cause flooding, agricultural losses and infrastructure damage.
- Monitoring Agency: The IMD tracks the cyclone and issues forecasts and early warnings.
Furthermore, it highlights the importance of early warning systems, coastal preparedness, and disaster risk reduction in India. Aspirants enrolled in UPSC coaching in the Northeast can study these aspects to strengthen their understanding of disaster management, government preparedness, and climate-related challenges.
How Did Cyclone Arnab Form Over the Bay of Bengal?
This tropical cyclone developed over the Bay of Bengal due to favourable oceanic and atmospheric conditions. The following factors supported its formation and intensification:
- Warm Sea Surface: First, warm waters above 26.5°C supplied heat and moisture to the developing cyclonic system.
- Low-Pressure Area: Subsequently, a low-pressure system encouraged surrounding winds to converge and moist air to rise.
- Atmospheric Instability: As warm air rose, it cooled and condensed, forming dense clouds and thunderstorms.
- Latent Heat Release: Moreover, condensation released latent heat, providing additional energy for cyclone intensification.
- Coriolis Force: Earth’s rotation helped organise the winds into an anticlockwise circulation in the Northern Hemisphere.
- Low Vertical Wind Shear: Furthermore, favourable wind conditions allowed the storm’s vertical structure to strengthen.
- High Atmospheric Moisture: Abundant moisture supported sustained convection and heavy rainfall.
- Cyclone Intensification: Consequently, the system strengthened into a cyclonic storm and subsequently reached the Very Severe Cyclonic Storm category.
Consequently, sustained atmospheric convection can transform a low-pressure system into a powerful tropical cyclone.
Which Country Named Cyclone Arnab?
Bangladesh proposed the name ‘Arnab’ for this tropical cyclone under the WMO and ESCAP cyclone-naming system. The name ‘Arnab’ means ocean or sea in Bengali. Moreover, the WMO/ESCAP Panel on Tropical Cyclones adopted a list of 169 names from 13 member countries in April 2020, with each country contributing 13 names. The India Meteorological Department (IMD) assigns these names sequentially to cyclones forming over the Bay of Bengal and the Arabian Sea. Aspirants preparing at an Assam Civil Service Academy can study this topic to strengthen their knowledge of meteorology, international cooperation, and disaster management for competitive examinations.
What Is a Cyclone? Understanding IMD Classification
A cyclone is a large-scale atmospheric system in which winds rotate around a low-pressure centre. In the Northern Hemisphere, cyclonic winds rotate anticlockwise.
The IMD classifies North Indian Ocean cyclonic systems according to their maximum sustained surface wind speeds.
| Cyclonic System | Wind Speed |
| Depression | 31–49 km/h |
| Deep Depression | 50–61 km/h |
| Cyclonic Storm | 62–88 km/h |
| Severe Cyclonic Storm | 89–117 km/h |
| Very Severe Cyclonic Storm | 118–166 km/h |
| Extremely Severe Cyclonic Storm | 167–221 km/h |
| Super Cyclonic Storm | 222 km/h or above |
Therefore, the classification of Cyclone Arnab as a Very Severe Cyclonic Storm indicates the potential for significant wind-related damage.
What Are the Potential Impacts of Cyclone Arnab?
This cyclonic storm poses significant risks to coastal regions of Andhra Pradesh, Odisha and neighbouring areas. Its strong winds, heavy rainfall and storm surges may cause widespread disruption.
- Heavy Rainfall: Cyclonic storm ‘Arnab’ may bring heavy to extremely heavy rainfall to coastal Andhra Pradesh and parts of Odisha. Consequently, low-lying areas may experience flooding and waterlogging.
- Strong Winds: The cyclone may produce sustained winds of 115-125 km/h, with gusts reaching 140 km/h. These winds can damage houses, trees and electricity infrastructure.
- Storm Surge: Moreover, a storm surge of around 1-1.5 metres may inundate low-lying coastal areas near Kakinada and Yanam.
- Agricultural Damage: Heavy rainfall and strong winds may damage standing paddy crops. Additionally, coastal flooding can increase soil salinity and affect agricultural productivity.
- Transport Disruptions: Authorities may cancel trains, restrict road movement and suspend other transport services. Consequently, essential supplies may face delays.
- Threat to Fishing Communities: Rough seas and high waves can endanger fishing boats. Therefore, authorities have advised fishermen to avoid venturing into affected sea areas.
- Infrastructure Damage: Strong winds and flooding may disrupt electricity, telecommunications, roads and drinking water supplies.
- Displacement of People: Furthermore, authorities may evacuate residents from vulnerable coastal settlements to cyclone shelters.
- Environmental Impact: Coastal flooding may damage mangroves, erode shorelines and disturb marine ecosystems.
Conclusion
Therefore, this very severe cyclonic storm highlights the vulnerability of India’s eastern coast to intense tropical cyclones. Its development over the Bay of Bengal and projected landfall near Andhra Pradesh underline the importance of accurate forecasting and timely preparedness. Moreover, effective coordination between meteorological agencies, disaster management authorities and coastal communities can reduce potential losses.
For UPSC and APSC preparation, the event offers an opportunity to understand tropical cyclone formation, IMD classifications and disaster risk reduction.
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| Tropical Cyclone: Formation, Structure, Eye and Key Facts |
Sources:
Frequently Asked Questions
1. When and where is Cyclone Arnab expected to make landfall?
The cyclonic storm Arnab is expected to make landfall near the Andhra Pradesh-Yanam coast on 28 October 2026. According to forecasts issued on 27 October, the cyclone may bring strong winds, heavy rainfall and storm surges. Moreover, Odisha and parts of West Bengal may experience heavy rainfall.
2. Which country named Cyclone Arnab, and what does the name mean?
Bangladesh proposed the name ‘Arnab’ for this cyclonic storm under the WMO/ESCAP cyclone-naming system. The word Arnab means ocean or sea in Bengali. Moreover, the India Meteorological Department (IMD) assigns cyclone names from a predetermined list contributed by 13 member countries.
3. How did Cyclone Arnab form over the Bay of Bengal?
The cyclonic storm Arnab formed over the Bay of Bengal due to warm sea surface temperatures, low atmospheric pressure and abundant moisture. Initially, warm ocean waters supplied energy to the developing system. Subsequently, the Coriolis force and low vertical wind shear supported its intensification. Consequently, the system strengthened into a Very Severe Cyclonic Storm.
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