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

[3] The JTWC unofficially tracked seven systems, with six having one-minute sustained winds greater than 65 km/h (40 mph), slightly above their 32-year average of five.

Being in an environment with low wind shear, favorable outflow, and high sea surface temperatures, the system would consolidate into a depression the following day.

Hours before striking southern Myanmar on May 2, Nargis would attain its peak intensity with winds of 165 km/h (105 mph) and an estimated central pressure of 962 mbar (hPa; 28.41 inHg).

[5][6] Striking the Irrawaddy Delta with unprecedented intensity, Nargis produced a devastating 3 to 5 m (9.8 to 16.4 ft) storm surge over the region and a maximum wind speed of 190 km/h was also reported..

[7] With approximately 140,000 fatalities taking place in Myanmar, Nargis is regarded as the worst disaster in the country's history and ranks as the fourth-deadliest tropical cyclone on record.

For several weeks, the State Peace and Development Council (Myanmar's military junta) insisted that the nation could cope with the disaster and refused aid.

In 2009, it was stated that the actions of the government could be condemned as crimes against humanity for "intentionally causing great suffering, or serious injury to body or to mental or physical health.

"[10] In early July, the seasonal monsoon over the Arabian Sea strengthened; a trough developing around the same time off the coast of Karnataka increased the local pressure gradient.

Little intensification occurred over the following day as it moved north-northwestward; the depression attained peak winds of 45 km/h (30 mph) and a pressure of 994 mbar (hPa; 29.35 inHg).

[11] Early on June 15, an area of low pressure formed within the monsoonal trough over the northern part of the Bay of Bengal.

[12] Over the next 24 hours deep convection developed around the low-pressure area and thus it was upgraded to Depression BOB 02 early the next day, as it was located about 220 km (140 mi), southeast of Kolkata, near to the Bangladesh coastline.

The depression then made landfall on the Bangladesh coast and slowly weakened into an area of low pressure, whilst located over Jharkhand in India.

[39] The Depression also caused 15 deaths in Uttar Pradesh, its state capital Lucknow received the heaviest rains for September in the last 10 years.

[40] Over 100 fishermen were reported missing as 25 trawlers capsized in the Bay of Bengal off Bangladesh's southern coastal areas as the sea turned rough due to a depression.

On October 19 the IMD noted that an area of low pressure which located to the south east of Salalah, Oman had intensified into a tropical depression and was assigned the number ARB 02.

[43] On October 21 IMD updated the system to a Deep Depression while it lay 700 km south of Salalah, Oman near the east coast of Somalia.

[44] It lost its strength while crossing the Gulf of Aden due to entry of dry air and land interaction as it passed close to the northeastern coast of Somalia.

[46][47] On October 24 it made landfall on the south-eastern coast of Yemen, leaving at least 26 civilians and six soldiers dead while trapping hundreds of people due to flooding and torrential rainfalls.

[48] The latest figure of casualties is of 180 persons dead and 100 others missing, mostly from the region of Hadhramawt, where the storm made landfall.

[54] On October 25, an area of low pressure which was located east of the Andhra Pradesh coast based on satellite, coastal observations, and buoy data intensified into a depression.

The Joint Typhoon Warning Center began issuing advisories on the system a few hours later that early morning, designating it as Tropical Cyclone 04B.

Rashmi brought down electrical and telephone poles and uprooted trees, large areas of acres of crops were also destroyed.

By mid morning the IMD advised the eastern coast of India that the system was expected to cross Andhra Pradesh by noon the next day (local time).

Later that morning the deep depression intensified into a cyclonic storm and was named Khai Muk and the cyclone watch was raised to a warning for Andhra Pradesh coast with Khai Muk forecast to intensify even further before it made landfall on November 15 in south Andhra Pradesh coast close to the north of Kavali.

[66] The minister of Andhra requested that the government send rice, pulses, oil and other materials to cyclone victims.

Early on November 26, the deep depression close to Tamil Nadu coast intensified into a cyclonic storm and was named "Nisha".

[69] 189 people were killed by the heavy rains and floods caused by the cyclone in Tamil Nadu and the death toll is expected to rise.

[73] Nisha killed 204 people making it the 4th deadliest storm in 2008 after Cyclone Nargis, Typhoon Fengshen and Hurricane Hanna.

On December 4, the India Meteorological Department (IMD) upgraded the area of low pressure to a depression giving it the designation "BOB 08".