Tropical cyclones and subtropical cyclones are named by various warning centers to simplify communication between forecasters and the general public regarding forecasts, watches, and warnings. The names are intended to reduce confusion in the event of concurrent storms in the same basin. Generally once storms produce sustained wind speeds of more than 33 knots (61 km/h; 38 mph), names are assigned in order from predetermined lists depending on which basin they originate. However, standards vary from basin to basin: some tropical depressions are named in the Western Pacific, while tropical cyclones must have a significant amount of gale-force winds occurring around the centre before they are named in the Southern Hemisphere.
Before the formal start of naming, tropical cyclones were named after places, objects, or saints' feast days on which they occurred. The credit for the first usage of personal names for weather systems is generally given to the Queensland Government Meteorologist Clement Wragge, who named systems between 1887 and 1907. This system of naming weather systems subsequently fell into disuse for several years after Wragge retired, until it was revived in the latter part of World War II for the Western Pacific. Formal naming schemes and naming lists have subsequently been introduced and developed for the Eastern, Central, Western and Southern Pacific basins, as well as the Australian region, Atlantic Ocean and Indian Ocean.
North Indian Ocean (45°E – 100°E)
Within the North Indian Ocean between 45°E – 100°E, tropical cyclones are named by the India Meteorological Department (IMD/RSMC New Delhi) when they are judged to have intensified into cyclonic storms with 3-minute sustained wind speeds of at least 34 kn (39 mph; 63 km/h). If a cyclonic storm moves into the basin from the Western Pacific, then it will keep its original name. However, if the system weakens into a deep depression and subsequently reintensify after moving into the region then will be assigned a new name. In May 2020, the naming of Cyclone Amphan exhausted the original list of names established in 2004. A new list of names has been prepared and will be used in alphabetical order for storms after Amphan.
List of Northern Indian Ocean tropical cyclone names (effective from 2020)
List Contributing nation
Bangladesh India Iran Maldives Myanmar Oman Pakistan Qatar Saudi Arabia Sri Lanka Thailand U.A.E. Yemen
1 Nisarga Gati Nivar Burevi Tauktae Yaas Gulab Shaheen Jawad Asani Sitrang Mandous Mocha
2 Biparjoy Tej Hamoon Midhili Michaung Remal Asna Dana Fengal Shakhti Montha Senyar Ditwah
3 Arnab Murasu Akvan Kaani Ngamann Sail Sahab Lulu Ghazeer Gigum Thianyot Afoor Diksam
4 Upakul Aag Sepand Odi Kyarthit Naseem Afshan Mouj Asif Gagana Bulan Nahhaam Sira
5 Barshon Vyom Booran Kenau Sapakyee Muzn Manahil Suhail Sidrah Verambha Phutala Quffal Bakhur
6 Rajani Jhar Anahita Endheri Wetwun Sadeem Shujana Sadaf Hareed Garjana Aiyara Daaman Ghwyzi
7 Nishith Probaho Azar Riyau Mwaihout Dima Parwaz Reem Faid Neeba Saming Deem Hawf
8 Urmi Neer Pooyan Guruva Kywe Manjour Zannata Rayhan Kaseer Ninnada Kraison Gargoor Balhaf
9 Meghala Prabhanjan Arsham Kurangi Pinku Rukam Sarsar Anbar Nakheel Viduli Matcha Khubb Brom
10 Samiron Ghurni Hengame Kuredhi Yinkaung Watad Badban Oud Haboob Ogha Mahingsa Degl Shuqra
11 Pratikul Ambud Savas Horangu Linyone Al-jarz Sarrab Bahar Bareq Salitha Phraewa Athmad Fartak
12 Sarobor Jaladhi Tahamtan Thundi Kyeekan Rabab Gulnar Seef Alreem Rivi Asuri Boom Darsah
13 Mahanisha Vega Toofan Faana Bautphat Raad Waseq Fanar Wabil Rudu Thara Saffar Samhah
