2008 North Indian Ocean cyclone season severe cyclonic storm. 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. Activity was mostly limited to the Bay of Bengal, with only two depressions developing in the Arabian Sea. Somewhat unusually, no depression developed during the month of July due to the lack of a prominent monsoon. Collectively, there were a total of 30 days of activity in the basin, with no storms existing simultaneously. The first and most destructive storm of the season, Cyclone Nargis struck the Irrawaddy Delta in southern Myanmar,
Cyclone Nargis while it was located about 550 km (340 mi) east of Chennai, India. On 28 April, Nargis became nearly stationary, while situated between high-pressure ridges to its northwest and southeast. That same day, the JTWC upgraded the storm to cyclone status, the equivalent of a minimal Category 1 hurricane on the Saffir-Simpson hurricane scale. Around the same time, the IMD upgraded Nargis to a severe cyclonic storm. The cyclone developed a concentric eye feature, which is an eyewall outside the inner dominant eyewall, with warm waters aiding in further intensification. Early on 29 April, the JTWC estimated Nargis reached winds