Cyclone Amphan
Super Cyclonic Storm Amphan ( ) was an extremely powerful and catastrophic tropical cyclone that caused widespread damage in Eastern India, specifically in West Bengal and Odisha, and in Bangladesh, in May 2020. It was the strongest tropical c ...
was the costliest tropical cyclone ever recorded in India and the North Indian Ocean, and the strongest cyclone ever since the
1999 Odisha Cyclone
The 1999 Odisha cyclone ( IMD designation BOB 06, JTWC designation 05B) was the most intense recorded tropical cyclone in the North Indian Ocean and among the most destructive in the region. The 1999 Odisha cyclone organized into a tropi ...
. It was the first storm, and strongest of the historic
2020 North Indian Ocean cyclone season
The 2020 North Indian Ocean cyclone season was the costliest North Indian Ocean cyclone season on record, mostly due to the devastating Cyclone Amphan. it was an above average season featuring 5 cyclonic storms. The North Indian Ocean cyclone ...
, the costliest recorded cyclone season. It made landfall in
West Bengal
West Bengal (; Bengali language, Bengali: , , abbr. WB) is a States and union territories of India, state in the East India, eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabi ...
with 100 mph winds. Within India, the storm killed 103 people, and caused $14 billion (2020
USD
The United States dollar (symbol: $; currency code: USD) is the official currency of the United States and several other countries. The Coinage Act of 1792 introduced the U.S. dollar at par with the Spanish silver dollar, divided it int ...
) in damage. Amphan produced extremely high winds that ripped roofs off houses and uprooted trees, and storm surges of in areas like
Digha
Digha (), is a seaside resort town in the state of West Bengal, India. It lies in Purba Medinipur district and at the northern end of the Bay of Bengal. The town has a low gradient with a shallow sand beach. It is a popular sea resort in India ...
, West Bengal.
Background
During 13 May 2020, an area of low pressure developed over the Southeastern Bay of Bengal about to the southeast of
Visakhapatnam
Visakhapatnam (; List of renamed places in India, formerly known as Vizagapatam, and also referred to as Vizag, Visakha, and Waltair) is the largest and most populous metropolitan city in the States and union territories of India, Indian stat ...
in the Indian state of
Andhra Pradesh
Andhra Pradesh (ISO 15919, ISO: , , AP) is a States and union territories of India, state on the East Coast of India, east coast of southern India. It is the List of states and union territories of India by area, seventh-largest state and th ...
.
Over the next couple of days, the system became more marked as it gradually consolidated further, with bands of deep
atmospheric convection
Atmospheric convection is the vertical transport of heat and moisture in the atmosphere. It occurs when warmer, less dense air rises, while cooler, denser air sinks.
This process is driven by parcel-environment instability, meaning that a "par ...
wrapping into the system's low-level center.
During 16 May, the
India Meteorological Department
India Meteorological Department (IMD) is an Indian agency of the Ministry of Earth Sciences of the Government of India. It is the principal agency responsible for meteorological observations, weather forecasting and seismology. IMD is headquar ...
(IMD) reported that the area of low pressure had developed into a depression and designated it as BOB 01 while it was located about to the south of Paradip in the Indian state of Odisha.
Moving northwards, the depression continually organized and became a cyclonic storm a few hours later, receiving the name ''Amphan''. Due to conductive environments., Amphan underwent
rapid intensification
Rapid intensification (RI) is any process wherein a tropical cyclone strengthens very dramatically in a short period of time. Tropical cyclone forecasting agencies utilize differing thresholds for designating rapid intensification events, th ...
into a severe cyclonic storm, with the JTWC assessing an increase in winds from at 12:00 UTC to , the equivalent to a Category 4 hurricane on the
Saffir–Simpson scale
The Saffir–Simpson hurricane wind scale (SSHWS) is a tropical cyclone intensity scale that classifies hurricanes—which in the Western Hemisphere are tropical cyclones that exceed the intensities of tropical depressions and tropical sto ...
(SSHWS), just six hours later. Furthermore, the IMD upgraded Amphan to an extremely severe cyclonic storm on their cyclone intensity scale. The broad storm was characterized by a cloud shield extending more than and a sharply-outlined 10 nautical mile-wide
eye
An eye is a sensory organ that allows an organism to perceive visual information. It detects light and converts it into electro-chemical impulses in neurons (neurones). It is part of an organism's visual system.
In higher organisms, the ey ...
.
On May 18, the IMD classified Amphan as a Super Cyclonic Storm, with 3-minute sustained winds of 245 kph, reaching its peak intensity later that day.
Early on May 20, Amphan went through an
eyewall replacement cycle
In meteorology, eyewall replacement cycles, also called concentric eyewall cycles, naturally occur in intense tropical cyclones with maximum sustained winds greater than , or hurricane-force, and particularly in major hurricanes of Saffir–Simps ...
. Amphan was on a weakening trend. Around 5:30 p.m.
IST #REDIRECT Ist
{{redirect category shell, {{R from other capitalisation{{R from ambiguous page ...
(12:00 UTC), Amphan made landfall as an Extremely Severe Cyclonic storm near
Bakkhali
Bakkhali is a village within the jurisdiction of the Namkhana police station in the Namkhana CD block in the Kakdwip subdivision of the South 24 Parganas district in the Indian state of West Bengal.
History
Sir Andrew Fraser, Lieutenant ...
,
West Bengal
West Bengal (; Bengali language, Bengali: , , abbr. WB) is a States and union territories of India, state in the East India, eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabi ...
with winds of .
As it moved further inland, Amphan rapidly weakened. Just six hours after landfall, the JTWC downgraded the storm to a Category 1-equivalent cyclone and issued its final warning on the system, as it became disorganized. On 21 May, Amphan dissipated into a well-marked low pressure area.
Preparations
Odisha
The government of Odisha directed the
magistrates
The term magistrate is used in a variety of systems of governments and laws to refer to a civilian officer who administers the law. In ancient Rome, a ''magistratus'' was one of the highest ranking government officers, and possessed both judici ...
of four
districts
A district is a type of administrative division that in some countries is managed by the local government. Across the world, areas known as "districts" vary greatly in size, spanning regions or counties, several municipalities, subdivisions ...
on 15 May to establish shelter homes for possible evacuees.
Odisha Chief Secretary Asit Kumar Tripathy initially identified 403 possible cyclone shelters in areas potentially impacted by Amphan, though 105 served as temporary medical centres for quarantines associated with the concurrent
COVID-19 pandemic
The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an disease outbreak, outbreak of COVID-19 in Wuhan, China, in December ...
.
Shelters could only be filled to one-third capacity to maintain
social distancing
In public health, social distancing, also called physical distancing, (NB. Regula Venske is president of the PEN Centre Germany.) is a set of non-pharmaceutical interventions or measures intended to prevent the spread of a contagious dise ...
guidelines due to the pandemic.
West Bengal

Social distancing restrictions in West Bengal reduced evacuation capacity in shelters from 500,000 people to 200,000 people.
The
Kolkata Municipal Corporation
Kolkata Municipal Corporation (KMC) is the local government of the Indian city of Kolkata, the List of Indian state and union territory capitals, state capital of West Bengal. This civic administrative body administers an area of . Its motto, ' ...
located schools and community centres for possible use as temporary shelters to augment evacuation capacity.
At least 1,704 shelters were ultimately established in Odisha and more than 2,000 were used in West Bengal, including schools and public buildings.
The government of West Bengal planned to evacuate 200,000 people from their homes by 18 May;
nearly 300,000 people evacuated in total from the state, including 200,000 from
North 24 Parganas district
North 24 Parganas (abv. 24 PGS (N)) or sometimes North Twenty Four Parganas is a district in southern West Bengal, of eastern India. North 24 Parganas extends in the tropical zone from latitude 22° 11′ 6″ north to 23° 15′ 2″ north and ...
and more than 40,000 from
Sagar Island
Sagar Island is an island in the Ganges delta, lying on the Continental Shelf, continental shelf of Bay of Bengal about 100 km (54 nautical miles) south of Kolkata. This island forms the Sagar (community development block), Sagar CD Block ...
.
Impact
West Bengal

The coastal districts recorded an estimated gusts of .
In
Kolkata
Kolkata, also known as Calcutta ( its official name until 2001), is the capital and largest city of the Indian state of West Bengal. It lies on the eastern bank of the Hooghly River, west of the border with Bangladesh. It is the primary ...
, reports of car being overturned, trees uprooted and downed power lines caused into havoc. Some parts of the city remained without power. The streets were waterlogged and trees blocking the roads. Some districts got power in the middle of the night after the storm had passed. The
airport
An airport is an aerodrome with extended facilities, mostly for commercial Aviation, air transport. They usually consist of a landing area, which comprises an aerially accessible open space including at least one operationally active surf ...
was remained shut and became waterlogged, many structural damages were reported. Chief Minister Mamata Banerjee even stated that "a bigger disaster than
Covid-19
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic.
The symptoms of COVID‑19 can vary but often include fever ...
".
Netaji Subhash Chandra Bose Airport,
Kolkata
Kolkata, also known as Calcutta ( its official name until 2001), is the capital and largest city of the Indian state of West Bengal. It lies on the eastern bank of the Hooghly River, west of the border with Bangladesh. It is the primary ...
, recorded highest wind speed of 133 km/h on 20 May 2020. Other parts of
Kolkata
Kolkata, also known as Calcutta ( its official name until 2001), is the capital and largest city of the Indian state of West Bengal. It lies on the eastern bank of the Hooghly River, west of the border with Bangladesh. It is the primary ...
experienced wind speed of 110–130 km/h.
Odisha
Although the state have escaped the worst part of the cyclone, it caused significant impact in the Odisha–West Bengal border districts. It affected 4.5 million people in the state. Due to high gust winds and intense rainfall, districts like
Bhadrak
Bhadrak is a city of Odisha state in eastern India. The city is the district headquarters of Bhadrak district. According to legend, the city derives its name from the Goddess Bhadrakali, whose temple is on the banks of the Salandi River.
Hi ...
and
Kendrapara
Kendrapara is a Town and a municipality in the Kendrapara district of the Indian state of Odisha. It is the headquarters of Kendrapara district.
Geography
Kendrapara is located at . It has an average elevation of . It is surrounded by Bhadrak ...
suffered especially for the paddy farmers since the paddy fields became unsuitable for paddy cultivation which was inundated by saline water due to storm surge. According to the Odisha Government, 3 million people remained without power due to power outage and it took a while to return to normalcy whereas the roads were being cleared by the
National Disaster Response Force (NDRF)
The National Disaster Response Force (NDRF) is a specialized force in India, tasked with the responsibility of responding to natural and man-made disasters. It operates under the National Disaster Management Authority of Ministry of Home Affai ...
. In
Mahakalapada
Mahakalapada (Sl. No.: 100) is an unreserved Vidhan Sabha constituency of Kendrapara district, Odisha.
This constituency includes Mahakalapada block and 17 Gram panchayats (Silipur, Dasipur, Dumuka, Marshaghai, Garajanga, Talasanga, Parakul ...
and
Rajanagar
Rajanagar is a Vidhan Sabha constituency of Kendrapara district, Odisha.
This constituency includes Pattamundai (M), Rajanagar block and 18 Gram panchayats (Bachhara, Srirampur, Damarpur, Sansarphal, Khanata, Oupada, Chandanagar, Sasana, D ...
, around of lands were destroyed also because of saline water ingression and hundreds of acres of
rabi crop
Rabi crops or the rabi harvest, also known as winter crops, are crop, agricultural crops that are sown in winter and harvested in the spring in India, Pakistan, and Bangladesh. Complementary to the rabi crop is the kharif crop, which is grown a ...
s were destroyed in
Balasore
Balasore, also known as Baleswar, is a city in the state of Odisha, about from the state capital Bhubaneswar and from Kolkata, in eastern India. It is the administrative headquarters of Balasore district and the largest city as well as heal ...
and
Bhadrak
Bhadrak is a city of Odisha state in eastern India. The city is the district headquarters of Bhadrak district. According to legend, the city derives its name from the Goddess Bhadrakali, whose temple is on the banks of the Salandi River.
Hi ...
district.
In the
Dharma Port, an estimated wind speed of were recorded while
Paradip
Paradeep, also spelled Paradip (originally Paradweep, also spelled Paradwip), is a major industrial seaport town and municipality, nearly 80 km from Cuttack city, in Jagatsinghpur district of Odisha, India. Paradeep was constituted as an NAC o ...
recorded only .
South India

Rains and strong winds from Amphan swept across many districts in
Kerala
Kerala ( , ) is a States and union territories of India, state on the Malabar Coast of India. It was formed on 1 November 1956, following the passage of the States Reorganisation Act, by combining Malayalam-speaking regions of the erstwhile ...
beginning on May 16.
Thunderstorms associated with Amphan caused severe
coastal erosion
Coastal erosion is the loss or displacement of land, or the long-term removal of sediment and rocks along the coastline due to the action of Wind wave, waves, Ocean current, currents, tides, wind-driven water, waterborne ice, or other impacts ...
in the
Valiyathura suburb of
Thiruvananthapuram
Thiruvananthapuram ( ), also known as Trivandrum, is the Capital city, capital city of the Indian state of Kerala. As of 2011, the Thiruvananthapuram Municipal Corporation had a population of 957,730 over an area of 214.86 sq. km, making it the ...
, damaging roads and destroying homes and threatening to displace over a hundred families from their homes.
Strong winds inflicted severe damage in
Kottayam district
Kottayam () is one of List of districts of Kerala, 14 districts in the States and union territories of India, Indian state of Kerala. Kottayam district comprises six municipal towns: Kottayam, Changanassery, Pala, Kerala, Pala, Erattupetta, Ettu ...
, especially in
Vaikom
Vaikom () is a Municipalities of Kerala, municipality in the Kottayam district of Kerala. It is located north of the district headquarters in Kottayam and about north of the state capital of Thiruvananthapuram. As per the 2011 Indian census, V ...
taluk, where homes and temples were impacted and trees and electric poles were downed.
A
₹
The Indian rupee sign ⟨₹⟩ is the currency symbol for the Indian rupee (ISO 4217: INR), the official currency of India. Designed by D. Udaya Kumar, it was presented to the public by the Government of India on 15 July 2010, following its ...
1.47 billion (US$19.3 million) damage toll resulted from the destruction of 16 homes and the partial damage of 313 homes.
A high school used as a homeless shelter collapsed, causing minor injuries.
Tamil Nadu faced some impact from the cyclone. Heavy winds damaged at least 100 boats anchored in the
Ramanathapuram district
Ramanathapuram District, also known as Ramnad District, is one of the 38 administrative districts of Tamil Nadu state in southern India. The old Ramanathapuram District consists of Present day Virudhunagar and Sivagangai districts, it touches th ...
.
Coastal erosion from rough seas generated by Amphan led to the collapse of three houses at Bommayarpalayam in
Viluppuram district
Viluppuram, Villupuram or Vizhuppuram is one of the 38 districts that make up the state of Tamil Nadu, India. It was founded on 30 September 1993, prior to which it was part of the Cuddalore district. Vizhuppuram district lies in the way of the ...
.
Roughly 35 acres of banana crops around
Gandarvakottai and
Aranthangi
Aranthangi is a town in Pudukkottai district in the state of Tamil Nadu, India. As of 2011, it had a population of 40,814.
Geography
The town lies 10 degrees north in latitude and 70 degrees east in longitude and lies 32.31 m above mean sea l ...
were destroyed.
Northern areas of the state have heatwave-like conditions for a week because Amphan took all of the area's moisture.
In Sooradapeta, near
Kakinada
Kakinada (; formerly known as Cocanada) is a Port, port city and municipal corporation in the Indian state of Andhra Pradesh. Situated along the Bay of Bengal, it serves as the headquarters of Kakinada district and is a prominent economic and c ...
in Andhra Pradesh, rough seas destroyed 35 homes and damaged several others.
Aftermath
International Relief
German NGO Welthungerlife released 100,000 Euro to fund Cyclone Amphan relief efforts.
West Bengal
On 22 May, Prime Minister
Narendra Modi
Narendra Damodardas Modi (born 17 September 1950) is an Indian politician who has served as the Prime Minister of India, prime minister of India since 2014. Modi was the chief minister of Gujarat from 2001 to 2014 and is the Member of Par ...
conducted an aerial survey over Kolkata, along with Chief Minister
Mamata Banerjee
Mamata Banerjee (; born 5 January 1955) is an Indian politician who is serving as the eighth and current List of chief ministers of West Bengal, chief minister of the States and union territories of India, Indian state of West Bengal since 2 ...
. Modi announced a ₹10 billion (US$132 million) immediate relief package for West Bengal and ₹5 billion (US$66.2 million) in relief for Odisha.
In advance, Modi announced that ₹200,000 (US$2,650) would be provided to the next of kin of people who died during the storm, and ₹50,000 (US$660) would be given to each injured person.
West Bengal CM Banerjee stated that it would take three to four days to assess the damage.
Twenty disaster relief teams were dispatched by the Indian Coast Guard to begin search and rescue operations.
Ten teams were sent to West Bengal to aid recovery, in addition to the NDRF teams pre-positioned there before Amphan's passage.
Also since most of the water pumps are operated in electricity and due to no electricity, several district suffered from water shortage which caused additional protest.
Approximately 1,000 ground teams worked to restore infrastructure and services in West Bengal after Amphan, though only 25–30 percent of workers were staffed due to the COVID-19 pandemic.
The resulting slow restoration of power sparked protests across West Bengal aimed primarily at electricity company
CESC.
Some restoration efforts were disrupted by these protests.
The
Home Department
The Home Office (HO), also known (especially in official papers and when referred to in Parliament) as the Home Department, is the United Kingdom's interior ministry. It is responsible for public safety and policing, border security, immigr ...
of West Bengal requested additional crews from railway and port interest, while five brigades from the Indian Army were deployed in Kolkata and the 24 Parganas districts to support recovery efforts.
The government of Odisha had sent 500 members of its disaster rapid action force and fire service to West Bengal.
The
European Union
The European Union (EU) is a supranational union, supranational political union, political and economic union of Member state of the European Union, member states that are Geography of the European Union, located primarily in Europe. The u ...
stated that it would initially provide €500,000 (US$545,000) for those affected by the storm in India.
Odisha
Additional assistance was requested from Jharkhand and Odisha.
Odisha Chief Minister
Naveen Patnaik
Naveen Patnaik (; born 16 October 1946) is an Indian politician and writer, who served as the 14th List of Chief Ministers of Odisha, Chief Minister of Odisha from 5 March 2000 to 12 June 2024. His 24-year reign is the List of longest-serving I ...
performed an aerial survey of the damage in his state following Amphan.
See also
*
Tropical cyclones in 2020
2020 was regarded as the most active tropical cyclone year on record, documenting 104 named tropical systems. During the year, 142 tropical cyclones formed in bodies of water known as tropical cyclone basins. Of these, a record-high of 104, ...
*
Tropical cyclones in India
India is a country in the north of Indian Ocean that is the most vulnerable to getting hit by tropical cyclones in the basin, from the east or from the west. On average, 2–3 tropical cyclones make landfall in India each year, with about one b ...
*
2020 North Indian Ocean cyclone season
The 2020 North Indian Ocean cyclone season was the costliest North Indian Ocean cyclone season on record, mostly due to the devastating Cyclone Amphan. it was an above average season featuring 5 cyclonic storms. The North Indian Ocean cyclone ...
*
List of Bangladesh tropical cyclones
Present day Bangladesh, due to its unique geographic location, suffers from devastating tropical cyclones frequently. The funnel-shaped northern portion of the Bay of Bengal amplifies the storm surge of landfalling tropical cyclones, affecting tho ...
*
List of North Indian cyclone seasons
*
Cyclone Amphan
Super Cyclonic Storm Amphan ( ) was an extremely powerful and catastrophic tropical cyclone that caused widespread damage in Eastern India, specifically in West Bengal and Odisha, and in Bangladesh, in May 2020. It was the strongest tropical c ...
(2020) — For more information about Cyclone Amphan
*
Effects of the 2020 North Indian cyclone season in India
*
Cyclone Sidr
Extremely Severe Cyclonic Storm Sidr was a tropical cyclone that resulted in one of the worst natural disasters in Bangladesh. The fourth named and the deadliest storm of the 2007 North Indian Ocean cyclone season, Sidr formed in the central B ...
(2007) — A storm that had a similar intensity, took a similar track and devastated similar areas.
*
1999 Odisha Cyclone
The 1999 Odisha cyclone ( IMD designation BOB 06, JTWC designation 05B) was the most intense recorded tropical cyclone in the North Indian Ocean and among the most destructive in the region. The 1999 Odisha cyclone organized into a tropi ...
— A storm that became the most intense tropical cyclone in the basin.
*
Cyclone Aila
Severe Cyclonic Storm Aila (JTWC designation: 02B) was the second named tropical cyclone of the 2009 North Indian Ocean cyclone season. Warned by both the Regional Specialized Meteorological Center (RSMC) and Joint Typhoon Warning Center (JTWC), ...
(2009) — A cyclone that devastated India and Bangladesh
*
Cyclone Phailin
Extremely Severe Cyclonic Storm Phailin (; ) was one of the most intense tropical cyclones to make landfall in India since the 1999 Odisha cyclone. The system was first noted as a tropical depression on October 4, 2013, within the Gulf of Thailand ...
(2013) — Took a similar path and devastated Odisha
*
Cyclone Bulbul
Severe Tropical Storm Matmo and Very Severe Cyclonic Storm Bulbul () (JTWC designation: ''23W'') were a pair of destructive tropical cyclones that tracked in the Western Pacific Ocean and the North Indian Ocean in October and November 2019 resp ...
(2019) — A cyclone that made landfall in West Bengal just six months before Amphan
*
1970 Bhola cyclone
The 1970 Bhola cyclone (also known as the Great Cyclone of 1970) was a catastrophic and extremely deadly tropical cyclone that struck East Pakistan (present-day Bangladesh) and India's West Bengal on 12 November 1970. It remains the deadliest t ...
— Took a similar track and devastated Bangladesh
References
{{reflist
2020 natural disasters
Disasters in India
Tropical cyclones in 2020
Tropical cyclones in India
Category 2 tropical cyclones
Amphan