These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean.

The scope of the season is limited to the Indian Ocean in the Northern Hemisphere, east of the Horn of Africa and west of the Malay Peninsula.

On November 23, a depression formed in the Bay of Bengal, and it strengthened into Very Severe Cyclonic Storm Nivar, two days later.

On November 28, a low pressure formed off the coast of Tamil Nadu, it gradually intensified into a depression, BOB 05.

It made landfall on Sri Lanka as a weak cyclonic storm before it degenerated to an area of low pressure.

[2][3] That morning, landslide and flooding warnings were hoisted for parts of eastern Sri Lanka and the Indian state of Kerala were given expectations of torrential rainfall in the coming days.

The following morning around 10:30 UTC, the IMD upgraded Amphan to a super cyclonic storm with 3-minute sustained winds of 240 km/h (150 mph) and a minimum pressure of 920 hectopascals (27.17 inHg).

The Public Authority for Civil Aviation (PACA) in Oman advised residents to exercise caution and not to venture to low-lying areas or sea.

[13] 2 people were found dead in a wadi due to flash floods,[14] while another person died and three were injured when a building collapsed.

Nisarga intensified into a severe cyclonic storm before making landfall near the coastal town of Alibag in Maharashtra at 12:30 (IST) on June 3.

It continued to move westwards, making landfall in the Khánh Hòa province and further weakened into a low pressure cell while crossing the Indochina Peninsula and re-emerged in the Andaman Sea on October 9.

[18][19] After that, BOB 02 moved west-northwestwards and made landfall in Andhra Pradesh near Kakinada in the early hours of October 13 and weakened again into a depression.

[21] Though the system's lower-level circulation was partially exposed due to high vertical wind shear and continuous land interaction, the JTWC re-issued a tropical cyclone advisory on October 15.

Moving westwards, the system dissipated into a well marked low pressure on the morning of October 19 over the West Central Arabian Sea due to unfavorable atmospheric conditions.

[30][31] On November 17, the India Meteorological Department (IMD) noted the potential for tropical cyclogenesis over the central Arabian Sea in association with an area of low pressure near the Maldives.

[32] Convective activity was enhanced by the Madden–Julian oscillation while sea surface temperatures of 29 to 30 °C (84 to 86 °F) and low wind shear favored additional development.

[35] On November 21, two scatterometer passes revealed a single, well-defined low with gale-force winds underneath an area of flaring convection.

The system's small size enabled it to take advantage of low wind shear and high sea surface temperatures.

[43] The IMD assessed Gati to have reached its peak intensity as a Very Severe Cyclonic Storm around 12:00 UTC, with three-minute sustained winds of 140 km/h (85 mph) and a minimum pressure of 976 mbar (28.82 inHg).

[44] Six hours later, Gati had made landfall near Hafun in northeastern Somalia with estimated one-minute sustained winds of 165 km/h (105 mph).

[43] This made Gati the first hurricane-force cyclone to strike the country since reliable records began and by default the nation's strongest.

[46] The increasingly elongated circulation of Gati emerged over the Gulf of Aden by 12:00 UTC,[47] and the JTWC issued their final advisory on the system shortly thereafter.

Due to the wind shear, it weakened to a Severe cyclonic storm, shortly before making landfall between Karaikal and Mamallapuram around Puducherry(also known as Pondicherry), Wednesday evening.

It reemerged on the Bay of Bengal as a strong deep depression before making its last landfall at Andhra Pradesh before weakening to a well marked low pressure on the morning of November 27.

[55] At this time, microwave imagery showed well-defined convective banding wrapping tightly around the low-level circulation (LLCC).

[56] At 15:00 UTC on December 2, Burevi reached its peak intensity with 1-minute sustained winds of around 85 km/h (55 mph) and a barometric pressure of 996 mbar (29.4 inHg).

[59] However, Burevi slowed down quickly as it became stuck in a col between two subtropical ridges on December 4; thus it stalled just west of Sri Lanka while it weakened back down to the equivalent of a tropical depression due to increasing vertical wind shear.