Cyclone Jal
Encyclopedia
Severe Cyclonic Storm Jal (IMD designation:BOB 05, JTWC designation:05B), also known as Cyclone
Cyclone
In meteorology, a cyclone is an area of closed, circular fluid motion rotating in the same direction as the Earth. This is usually characterized by inward spiraling winds that rotate anticlockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere of the Earth. Most large-scale...

 Jal
, is the fifth named cyclonic storm and the fourth Severe Cyclonic Storm of the 2010 North Indian Ocean cyclone season
2010 North Indian Ocean cyclone season
The 2010 North Indian Ocean cyclone season was a very active event in the annual cycle of tropical cyclone formation with some 8 depressions and 6 named storms, nearly above the average of 4-6 storms in the region due to a moderate La Niña...

. Jal developed from a low pressure area
Low pressure area
A low-pressure area, or "low", is a region where the atmospheric pressure at sea level is below that of surrounding locations. Low-pressure systems form under areas of wind divergence which occur in upper levels of the troposphere. The formation process of a low-pressure area is known as...

 in the South China Sea
South China Sea
The South China Sea is a marginal sea that is part of the Pacific Ocean, encompassing an area from the Singapore and Malacca Straits to the Strait of Taiwan of around...

 that organized into a Tropical Depression on . Jal is a Sanskrit
Sanskrit
Sanskrit , is a historical Indo-Aryan language and the primary liturgical language of Hinduism, Jainism and Buddhism.Buddhism: besides Pali, see Buddhist Hybrid Sanskrit Today, it is listed as one of the 22 scheduled languages of India and is an official language of the state of Uttarakhand...

 word, meaning water. At least 54 people are known to have been killed in India. As a tropical depression, Jal produced torrential rains over parts of Thailand and Malaysia, triggering severe flooding which killed 59 and four people in the two countries respectively. In Sri Lanka, heavy rainfall with strong winds have caused flooding affecting around 80,000 people.

Meteorological history

On October 12, a weak tropical disturbance
Tropical cyclone
A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones strengthen when water evaporated from the ocean is released as the saturated air rises, resulting in condensation of water vapor...

 formed within a monsoonal trough of low pressure
Trough (meteorology)
A trough is an elongated region of relatively low atmospheric pressure, often associated with fronts.Unlike fronts, there is not a universal symbol for a trough on a weather chart. The weather charts in some countries or regions mark troughs by a line. In the United States, a trough may be marked...

 in the South China Sea
South China Sea
The South China Sea is a marginal sea that is part of the Pacific Ocean, encompassing an area from the Singapore and Malacca Straits to the Strait of Taiwan of around...

, just off the eastern coast of Borneo
Borneo
Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....

. For the next few weeks, the system stalled on the eastern coast of Bormeo, remaining disorganized, while the system barely affected the island of Borneo at all. During the last week of October, the storm detached from the moonsonal trough, and began slowly moving east. On , the Japan Meteorological Agency
Japan Meteorological Agency
The or JMA, is the Japanese government's weather service. Charged with gathering and reporting weather data and forecasts in Japan, it is a semi-autonomous part of the Ministry of Land, Infrastructure and Transport...

 (JMA) and the Joint Typhoon Warning Center
Joint Typhoon Warning Center
The Joint Typhoon Warning Center is a joint United States Navy – United States Air Force task force located at the Naval Maritime Forecast Center in Pearl Harbor, Hawaii...

 (JTWC) both reported that the system had began to develop, already beginning to organize itself, about 550 km (340 mi), to the southeast of Ho Chi Minh City
Ho Chi Minh City
Ho Chi Minh City , formerly named Saigon is the largest city in Vietnam...

, Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

. During the next few days, the tropical depression strengthened slowly as it slowly moved towards the eastern border of the Indian Ocean
Indian Ocean
The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

. During this time, convection around the disturbance increased, but failed to organize around the storm's low level circulation center. Despite these unfavorable conditions, the storm managed to develop convection around its area of low pressure, and organized itself significantly. On , the Thai and Malaysian meteorological departments (TMD) reported that the disturbance had developed into a tropical depression, and initiated advisories on the system. From comtinuing into , the storm strengthened slightly as it continued moving towards the Indian Ocean, but not enough for it to become a tropical storm. Late on , the tropical depression crossed the Malay Peninsula
Malay Peninsula
The Malay Peninsula or Thai-Malay Peninsula is a peninsula in Southeast Asia. The land mass runs approximately north-south and, at its terminus, is the southern-most point of the Asian mainland...

, and entered the extreme eastern part of the Indian Ocean
Indian Ocean
The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

, causing the west Pacific agencies to cancel all their advisories on the storm, as it was no longer in the west Pacific Ocean. As soon as the system entered the extreme eastern border of the Indian Ocean, the India Meteorological Agency (IMD) immediately declared the storm a depression, and began issuing advisories on the system, because the system had already organized itself into a tropical depression in the west Pacific Ocean, on , which was a day before the system entered the IMD's area of responsibility. Later on , the system began showing signs of further, but slow organization, as the system continued moving west slowly. Early on , the Malaysian Meteorological Department
Ministry of Science, Technology and Innovation (Malaysia)
The Ministry of Science, Technology and Innovation or MOSTI is the Malaysian ministry in charge of research, telecommunication and information technology. The current minister is Datuk Dr...

 (MMD) also issued their first advisory on the system, and the IMD simply called it Depression, becausing the storm had not yet entered the Bay of Bengal
Bay of Bengal
The Bay of Bengal , the largest bay in the world, forms the northeastern part of the Indian Ocean. It resembles a triangle in shape, and is bordered mostly by the Eastern Coast of India, southern coast of Bangladesh and Sri Lanka to the west and Burma and the Andaman and Nicobar Islands to the...

. Later on that day, the IMD reported that the system had weakened into an area of low pressure, due to the effects of crossing the Malay Peninsula, but they forecast it to become a depression soon again, as the storm was moving over warm water. Late on , the Joint Typhoon Warning Center
Joint Typhoon Warning Center
The Joint Typhoon Warning Center is a joint United States Navy – United States Air Force task force located at the Naval Maritime Forecast Center in Pearl Harbor, Hawaii...

 (JTWC) issued a tropical cyclone formation alert on the system, as it began reorganizing itself. Early on , the India Meteorological Department
India Meteorological Department
The India Meteorological Department , also referred to as the Met Office, is an 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) upgraded the area of low pressure to a depression again, this time giving it the designation "BOB 05," as the system had now entered the Bay of Bengal. On , the Joint Typhoon Warning Center (JTWC) designated the system as Tropical Cyclone 05B.

Early on November 6, the IMD upgraded Depression BOB 05 to a deep depression. Later, the deep depression strengthened further, prompting the IMD to upgrade it to a cyclonic storm, and was named "Jal". The storm continued to grow and became a severe cyclonic storm by . Soon afterward, it was upgraded to a Category 1 Tropical Cyclone by the JTWC. On , Jal started weakening. Soon afterward, the IMD reported that Jal weakened into a Cyclonic Storm. Later that day, the JTWC downgraded Jal into a Tropical storm. Late on the same day, the IMD reported that the storm weakened into a Deep Depression. As a deep depression, the system made landfall at Chennai, a few hours later. The system continued to weaken and became a depression by early hours of . The depression continued to weaken until it dissipated into a remnant low on the same day. While on that very same day the IMD said that there is a possibility of re-strengthening of Jal's remnants over north east Arabian sea. And as the IMD said, the system moved into the Arabian Sea without weakening by early . But instead of moving across the Arabian Sea, the depression moved north along the western coast of India, restrengthening slightly, but not enough for it to regenerate. Within a few hours, the storm started moving inland, due to the prevailing winds. The system rapidly weakened as it moved farther inland over the next few days, causing severe flooding along the way. Early on , the remnants of Cyclone Jal were completely absorbed by a non-tropical low over the Himalayas
Himalayas
The Himalaya Range or Himalaya Mountains Sanskrit: Devanagari: हिमालय, literally "abode of snow"), usually called the Himalayas or Himalaya for short, is a mountain range in Asia, separating the Indian subcontinent from the Tibetan Plateau...

.

Preparations and impact


Death toll
Malaysia 4
Thailand 59
India 55
Total (as of November 12, 2010) 118


Thailand

When Jal was just a low pressure area, it hit Thailand
Thailand
Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

 and strengthened into a depression. As a result, heavy to very heavy rains battered the country causing extensive flooding and claimed 59 lives.
The government of Thailand estimated the total damage to be around .

Malaysia

As a tropical depression, Jal produced substantial rainfall over parts of northern Malaysia, triggering severe flooding which killed at least four people. Nearly 50,000 people were forced to leave their homes due to rising flood waters. The severity of damage also prompted the closure of an airport and the regions major highway.

The floods affected transportation in and around Kedah
Kedah
Kedah is a state of Malaysia, located in the northwestern part of Peninsular Malaysia. The state covers a total area of over 9,000 km², and it consists of the mainland and Langkawi. The mainland has a relatively flat terrain, which is used to grow rice...

 and Perlis
Perlis
Perlis is the smallest state in Malaysia. It lies at the northern part of the west coast of Peninsular Malaysia and has Satun and Songkhla Provinces of Thailand on its northern border. It is bordered by the state of Kedah to the south...

, shutting down rail and closing roads including the North–South Expressway. Alor Setar's Sultan Abdul Halim Airport
Sultan Abdul Halim Airport
Sultan Abdul Halim Airport is an airport that serves Alor Setar, a city in the state of Kedah in Malaysia.The airport, located in Kepala Batas, 13 km away from town, can handle up to 800,000 ppa. The new terminal is already operational by 5 May 2006 to cater for future traffic growth...

 was also closed after its runway was flooded, leaving helicopters as the only mode of aerial transport into Kedah and Perlis. The floods also contaminated water supply in Kedah and Perlis, forcing the states to receive supplies from the neighbouring state of Perak
Perak
Perak , one of the 13 states of Malaysia, is the second largest state in the Peninsular Malaysia bordering Kedah and Yala Province of Thailand to the north, Penang to the northwest, Kelantan and Pahang to the east, Selangor the Strait of Malacca to the south and west.Perak means silver in Malay...

.

Rice production, a key industry in Kedah and Perlis, was badly affected by the floods. According to the federal government, over 45,000 hectares of rice fields were damaged in Kedah alone. The government pledged ringgit in aid to farmers in both states. In Perlis, the floods submerged over two-thirds of the state's land in water. The north-eastern state of Kelantan
Kelantan
Kelantan is a state of Malaysia. The capital and royal seat is Kota Bharu. The Arabic honorific of the state is Darul Naim, ....

 was also affected by the floods, causing the closure of some schools.

The floods triggered immediate political fallout. The Federal Minister for Housing and Local Government and Alor Setar MP Chor Chee Heung
Chor Chee Heung
Dato' Chor Chee Heung ; is a Malaysian politician and is currently the Member of the Parliament of Malaysia for the Alor Setar constituency in Kedah, Malaysia...

 criticised the Kedah State government (led by the Pan-Malaysian Islamic Party, an opponent of Chor's Barisan Nasional
Barisan Nasional
Barisan Nasional is a major political coalition in Malaysia, formed in 1973 as the successor to the Alliance . Along with its predecessor, it has been Malaysia's federal ruling political force since independence...

 coalition) for what he considered a slow response to the floods and the government's inexperience. Chor's own home in Alor Setar was flooded. Deputy Prime Minister Muhyiddin Yassin
Muhyiddin Yassin
Tan Sri Muhyiddin bin Yassin is a Malaysian politician and the current Deputy Prime Minister and the Minister of Education. He is also the Deputy President of the United Malays National Organisation , the main component party of the ruling Barisan Nasional coalition.Muhyiddin grew up in the state...

 claimed the State government had a responsibility to assist victims of the flood. Kedah's Chief Minister Azizan argued that his government's response had been "quick" and that 300,000 ringgit in aid had been committed to the affected areas. Kedah's Sultan Abdul Halim called publicly for politics to be set aside for the purposes of dealing with the floods.

India

A cyclone warning was issued to the east India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

n coasts which were already hit by a strong monsoonal trough that caused severe flooding and killed hundreds of people displacing many more. Storm warning signals were hoisted in Ganjam
Ganjam District
Ganjam district is a district in the Indian state of Orissa located on the border of Andhra Pradesh. Ganjam's total area is 8,070 km² . Its population is approximately 2,704,056.Ganjam is known for its beaches bordering the Bay of Bengal, the most famous ones being Gopalpur and Dhavaleshwar...

 and Jagatsinghpur
Jagatsinghpur District
Jagatsinghpur District is an administrative district of Orissa, India. The city of Jagatsinghpur is the district headquarters.-Post-independence:...

 districts of Orissa
Orissa
Orissa , officially Odisha since Nov 2011, is a state of India, located on the east coast of India, by the Bay of Bengal. It is the modern name of the ancient nation of Kalinga, which was invaded by the Maurya Emperor Ashoka in 261 BC. The modern state of Orissa was established on 1 April...

. Over 70,000 people evacuated from four districts of Andhra Pradesh, the authorities provided shelter in relief camps across interior Andhra Pradesh. Five teams of 40–50 rescuers arrived at the low lying, already flooded areas in Andhra Pradesh where the impact of the system was expected to be worse.

As the cyclone neared landfall, heavy rainfall caused mudslides and flooding. On , The Andhra Pradesh chief minister Konijeti Rosaiah
Konijeti Rosaiah
Konijeti Rosaiah is the current Governor of Tamil Nadu and a former Chief Minister of Andhra Pradesh. He was previously an MLC, MLA & MP of the Indian National Congress numerous times and has handled many ministerial posts over his long political career spanning over half a century...

 said that about 54 have died in India due to the storm. The National Disaster Response Force at Arakkonam
Arakkonam
Arakkonam is a mid-sized City in the Indian state of Tamil Nadu, with a population of about 101,626 as per the census 2011...

 in Tamil Nadu shifted their personnel to Nellore in order to supervise the rescue and relief operations.

Over 16 flights scheduled to land at Chennai
Chennai
Chennai , formerly known as Madras or Madarasapatinam , is the capital city of the Indian state of Tamil Nadu, located on the Coromandel Coast off the Bay of Bengal. Chennai is the fourth most populous metropolitan area and the sixth most populous city in India...

 were diverted to Bangalore
Bangalore
Bengaluru , formerly called Bengaluru is the capital of the Indian state of Karnataka. Bangalore is nicknamed the Garden City and was once called a pensioner's paradise. Located on the Deccan Plateau in the south-eastern part of Karnataka, Bangalore is India's third most populous city and...

 because of poor visibility. It was reported that around hectares of cropland was devastated by the cyclone. Power outages occurred at many places in Tamil Nadu and Andhra Pradesh throughout Sunday. The Indian government said that they would be giving twenty kilograms of rice and five litres of kerosene to each family in flood-affected areas. They would also give 2 lakhs to the families of the victims. The total damage estimated by the Indian government was with Visakhapatnam district
Visakhapatnam district
Visakhapatnam district , also known as Visakha Zilla, is an administrative division of Andhra Pradesh, India. The administrative headquarters of the Visakhapatnam District is Visakhapatnam.-Post-Independence:...

 suffering a damage of , Nellore district
Nellore district
Sri Amarajeevi Potti Sri Ramulu Nellore District is one of the 23 districts of Andhra Pradesh. Nellore is famous for high paddy field, and so it got its name from "Nelli". The population of the district was 2,966,082 of which 22.45% were urban as of 2011....

 suffering a damage of and Prakasam district
Prakasam district
Prakasam District is an administrative district in the state of Andhra Pradesh, in India. The district headquarters is located at Ongole City...

 suffering a damage of . Coastal and interior areas of Karnataka too faced heavy rains due to the cyclone. One person was killed in Chennai
Chennai
Chennai , formerly known as Madras or Madarasapatinam , is the capital city of the Indian state of Tamil Nadu, located on the Coromandel Coast off the Bay of Bengal. Chennai is the fourth most populous metropolitan area and the sixth most populous city in India...

, Tamil Nadu
Tamil Nadu
Tamil Nadu is one of the 28 states of India. Its capital and largest city is Chennai. Tamil Nadu lies in the southernmost part of the Indian Peninsula and is bordered by the union territory of Pondicherry, and the states of Kerala, Karnataka, and Andhra Pradesh...

 when a tree toppled.

As the remnants of Jal continued to move northwest, they brought light to moderate spells of rain in India's warmest state of Rajasthan
Rajasthan
Rājasthān the land of Rajasthanis, , is the largest state of the Republic of India by area. It is located in the northwest of India. It encompasses most of the area of the large, inhospitable Great Indian Desert , which has an edge paralleling the Sutlej-Indus river valley along its border with...

. Later on, light to moderate spells of rain also battered the state of Gujarat.

Sri Lanka

Cyclone Jal was about 400 km away from Trincomalee
Trincomalee
Trincomalee is a port city in Eastern Province, Sri Lanka and lies on the east coast of the island, about 113 miles south of Jaffna. It has a population of approximately 100,000 . The city is built on a peninsula, which divides the inner and outer harbours. Overlooking the Kottiyar Bay,...

, but it moved towards South India to make a landfall there. However, heavy rainfall with strong winds and rough sea conditions were warned by the Sri Lankan Meteorological Department.

After the dissipation of Cyclone Jal over western India on , heavy thundershowers occurred in almost all parts of Sri lanka
Sri Lanka
Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is a country off the southern coast of the Indian subcontinent. Known until 1972 as Ceylon , Sri Lanka is an island surrounded by the Indian Ocean, the Gulf of Mannar and the Palk Strait, and lies in the vicinity of India and the...

 on , and by Colombo
Colombo
Colombo is the largest city of Sri Lanka. It is located on the west coast of the island and adjacent to Sri Jayawardenapura Kotte, the capital of Sri Lanka. Colombo is often referred to as the capital of the country, since Sri Jayawardenapura Kotte is a satellite city of Colombo...

 had received a rainfall of within the previous 24 hours. It was the highest rainfall Colombo had received in a day after 18 years. Many of the lowlands in and around Colombo
Colombo
Colombo is the largest city of Sri Lanka. It is located on the west coast of the island and adjacent to Sri Jayawardenapura Kotte, the capital of Sri Lanka. Colombo is often referred to as the capital of the country, since Sri Jayawardenapura Kotte is a satellite city of Colombo...

were flooded. Officials announced that around 80,000 people were affected by the floods in Colombo district. Navy boats and Air Force helicopters were also summoned for relief activities.

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