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IMD became a member of the World Meteorological Organisation after independence on 27 April 1949. [5] The agency has gained in prominence due to the significance of the monsoon rains on Indian agriculture. It plays a vital role in preparing the annual monsoon forecast, as well as in tracking the progress of the monsoon across India every season ...
Over the next two weeks a trough of low pressure and a cyclonic circulation, helped advance the monsoon into remaining parts of the Arabian Sea, central and north-western India. [2] The India Meteorological Department (IMD) subsequently declared that the monsoon covered the whole of India on July 17, which was about two days later that normal. [2]
There are two main seas in the North Indian Ocean — the Arabian Sea to the west of the Indian subcontinent, abbreviated ARB by the India Meteorological Department (IMD); and the Bay of Bengal to the east, abbreviated BOB by the IMD. And, the depressions formed over the land, are abbreviated LAND by the Indian Meteorological Department.
Hence, IMD (India Meteorological Department) began monitoring the cyclonic circulation. Later that day, Joint Typhoon Warning Center (JTWC) also began tracking the system, noting that the system could become a monsoon depression. On 23 May, the IMD upgraded the system to a well-marked low, stating that it was rapidly coalescing.
In April 2024, the India Meteorological Department (IMD) warned of heatwave conditions for 10 to 20 days in several parts of the country. The IMD said that the conditions would eventually subside with the onset of the neutral phase of the El Niño–Southern Oscillation and the monsoon in June. [41]
This causes the flow of moisture-laden winds from sea to land. On reaching land, these winds rise because of the geographical relief, cooling adiabatically and leading to orographic rains. This is the southwest monsoon. The reverse happens during the winter, when the land is colder than the sea, establishing a pressure gradient from land to sea.
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During the 2004 post monsoon season the IMD started to name tropical cyclones within the basin, with the first one named Cyclone Onil during September 2004. [13] During 2015 a modification to the intensity scale took place, with the IMD and WMO calling a system with 3-minute maximum sustained wind speeds between 90 knots (165 km/h; 105 mph) and ...