Super Cyclonic Storm Gonu was an extremely intense and very damaging storm. The cyclone was the most intense recorded tropical cyclone in the Arabian Sea and the strongest named tropical cyclone recorded in the Indian Ocean. Gonu developed on June 1 2007 over the northwest Indian Ocean and then intensified to Category 5 levels. The storm then weakened and then struck eastern Oman on June 6, contributing to that region's worst modern natural disaster and causing around $4.2 billion in damage. The cyclone also struck Iran, causing $216 million in damage. Almost eighty people perished from Cyclone Gonu.