Once air spreads out, a positive pressure at high levels is produced, which accelerates the downward motion of air due to convection. When a tropical storm intensifies, the air rises in vigorous thunderstorms and tends to spread out horizontally at the tropopause level. Amphan Cyclone - Facts about Amphan for UPSC Amphan is a super tropical cyclone that originated from the Bay of Bengal in May 2020. In anticyclones, air comes in from above and sinks to the ground. A pre-existing weak low- pressure area or low-level-cyclonic circulation. Tropical cyclones originate and intensify over warm tropical oceans. The formation and initial development of a cyclonic storm depends upon the transfer of water vapour and heat from the warm ocean to the overlying air, primarily by evaporation from the sea surface. The homogenous regions can be the vast ocean surface or vast plains.

The pre-monsoon period is generally considered to be unsupportive for the formation of tropical cyclones. Amphan—the second super cyclone to have had formed over the Bay of Bengal in two decades—made a landfall between Digha, some 180 km south of Kolkata in West Bengal, and Hatiya islands in Bangladesh during the afternoon to evening hours of Wednesday, May 20, with the maximum sustained wind speed of 155-165 kmph gusting to 190 kmph. It was coined by Henry Peddington because the tropical storms in the Bay of Bengal and the Arabian Sea appear like coiled serpents of the sea. Click here for Online Inquiry form to join Drishti IAS programmes. UPSC 2020 Topic –Amphan Cyclone –UPSC GS-I Amphan is a super tropical cyclone originated from the Bay of Bengal in May 2020. In another incident Mumbai has been hit by a cyclone (Cyclone Nisarga) after a gap of 129 years. Recently, the National Crisis Management Committee reviewed the preparedness for the impending cyclone Amphan. It is a very intense cyclone with associated wind speed of 220-230 kmph. The main physical feature of a mature tropical cyclone in the Indian Ocean is a concentric pattern of highly turbulent giant cumulus thundercloud bands.

The fronts occur in middle latitudes and are characterised by steep gradient in temperature and pressure. Get Drishti Publications books & magazines on Amazon - click here! Click here for Online Inquiry form to join Drishti IAS programmes. Recently, the National Crisis Management Committee reviewed the preparedness for the impending cyclone Amphan.
For the Indian Ocean region, a formula for naming cyclones was agreed upon in 2004. Tropical Cyclones are one of the most devastating natural calamities in the world. Amphan is the second pre-monsoon cyclone to form in the Bay of Bengal in two years. These are-, These measures are being adopted and tackled on a State to State basis under the.

It has been named by Thailand.

The surrounding air rushed in to occupy this void and coupled with the earth’s rotation a cyclone is formed.

According to this theory, the warm-humid air masses from the tropics meet the dry-cold air masses from the poles and thus a polar front is formed.

High pressure centers generally have fair weather. The process of naming cyclones involves several countries in the region and. It may have only a little horizontal variation in temperature and moisture throughout the air mass. The naming of tropical cyclones is a recent phenomenon. Read important facts about Nisarga cyclone for the IAS Exam. It is considered the first super cyclonic storm in the Bay of Bengal since 1999 Odisha cyclone.

An anticyclone is the opposite of a cyclone i.e. All rights reserved    |, Quick Book: Environment and Ecology - English medium. i.e., it has an outward-spiralling air circulation around a high pressure centre. Cyclone Amphan (pronounced as UM-PUN) is a tropical cyclone formed over Bay of Bengal that has intensified and likely to turn into a “super cyclonic storm (maximum wind speed is 120 knots)”. The conditions favourable for the formation and intensification of tropical storms are: Large sea surface with temperature higher than 27° C. Small variations in the vertical wind speed. It is estimated that India gets close to 5-10% of its total annual rainfall from western disturbances. With the inducement of subsidence, air warms up by compression and a warm ‘Eye’ (Low pressure centre) is generated. At the national level, Cabinet Committee on Security (CCS) and National Crisis Management Committee (NCMC) are the key committees involved in the top-level decision-making related to Disaster Management. Extratropical cyclones present a contrast to the more violent cyclones or hurricanes of the tropics, which form in regions of relatively uniform temperatures. At the national level, Cabinet Committee on Security (CCS) and National Crisis Management Committee (NCMC) are the key committees involved in the top-level decision-making related to Disaster Management. Most of these cyclones are very destructive due to high wind velocity and torrential rain that accompanies it.
Tropical cyclones are violent storms that originate over oceans in tropical areas and move over to the coastal areas bringing about large scale destruction caused by violent winds, very heavy rainfall and storm surges. The first one was. These tropical cyclones have very high wind velocity and heavy rainfall and hit the Indian Coastal states of Tamil Nadu, Andhra Pradesh, West Bengal,Odisha and Gujarat (These five states are more vulnerable to cyclone disasters than others in India). All rights reserved    |, Quick Book: Environment and Ecology - English medium. In the year 2020, Cyclone Amphan (pronounced as UM-PUN) formed over Bay of Bengal intensified and turned into a “super cyclonic storm”, the second super cyclone since 1999. Cyclone Amphan (pronounced as UM-PUN) is a tropical cyclone formed over Bay of Bengal that has intensified and likely to turn into a “super cyclonic storm (maximum wind speed is 120 knots)”. It is also being called as Mumbai’s first cyclone in 72 years. It is a part of the North Indian Ocean Cyclone Season. Super Cyclone Amphan Cyclone Amphan is a tropical cyclone formed over the Bay of Bengal that has intensified and likely to turn into a “super cyclonic storm (maximum wind speed is 224 kmph)”. When an air mass remains over a homogenous area for a sufficiently longer time, it acquires the characteristics of the area.

Thus, a void is created because of lessening of pressure. There are many structural and non-structural measures for effective disaster management of cyclones. It developed into a Super Cyclone in less than 48 hours. This precipitation during the winter season has great importance in agriculture particularly for rabi crops including wheat. The cyclone AMPHAN intensified into a Super Cyclone around noon today, the 18 th May, 2020. Tropical cyclones originate over the Bay of Bengal, Arabian Sea and the Indian ocean. This interaction of cold and warm air masses creates instability and a low pressure is created at the junction particularly in the center of interactions. It is a part of the North Indian Ocean Cyclone Season. Finally, it made landfall in the evening hours of 20th May 2020 through the Sundarbans between West Bengal and Bangladesh.