Four cyclonic storms including a super cyclonic storm (Gonu) formed over the north Indian Ocean during 2007. The first ever super cyclonic storm Gonu developed over the Arabian Sea as per the history recorded by IMD since 1877. It made its first landfall over Oman as a very severe cyclonic storm, and then emerged into the Gulf of Oman and made a second landfall over Iran as a cyclonic storm. Heavy to very heavy rainfall occurred over the eastern coast of Oman, causing flood and heavy damage. Gale winds with a speed of 100 km/h were recorded at Muscat at the time of landfall. About 50 persons died and estimated damage to property was about $4.2 billion in Oman. The number of human deaths was 28 and loss of property was $215 million over Iran. The special features of “Gonu” are as follows. It was the first ever super cyclonic storm developed over the Arabian Sea as per recorded history of IMD (1979, 1996, 2008) The super cyclonic storm, GONU made two landfalls over Oman and Iran. This was the second landfalling cyclonic storm over Iran after 4 June 1898 (IMD 1979, 2008).