The possible role of gravity waves associated with cyclonic activity, considered as source of seeding of spread F is investigated. 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The ninth depression, and the third and strongest named storm of the 2017 North Indian Ocean cyclone season, Ockhi originated from an area of low pressure that formed over the southwest Bay of Bengal on November 28. The study will discuss the variation of various ionospheric parameters/phenomena over this period using variety of instruments such as ionosondes, GPS derived TEC, scintillation data etc over the Indian equatorial station Tirunelveli. The strongest storm of the 2017 North Indian Ocean cyclone season, Ockhi originated from an area of disturbed weather near Sri Lanka on November 29 Proximity to land initially prevented significant strengthening; however, as it entered the Arabian Sea, favourable conditions allowed it to quickly strengthen on December 1 Heat waves over Andhra Pradesh : A case study of summer 2003 C. 38 trains were cancelled on October 12th, 2014. 1.1 Cyclone Warning and Forecasting Recommendation 1.1.1 The Committee takes note of the submission by the Indian Meteorological Department (IMD) that cyclone Ockhi was an unusual phenomenon, which was evident in its rapid intensification. Click here to stay informed and know what is happening around the world with our G.K. and Current Affairs section. accumulated cyclone energy were significantly larger for cyclone Ockhi, in comparison with the climatologi-cal cyclone records. Titli cyclone is ‘rarest of rare’ What to study? Very Severe Cyclonic Storm Ockhi was a strong tropical cyclone that devastated parts of Sri Lanka and India in 2017, and was the most intense tropical cyclone in the Arabian Sea since Cyclone Megh in 2015. Landsat 8 imageries of Pre and Post Ockhi where compared and changes made by cyclone … The present study shows that the Madden–Julian Oscillation (MJO) and warm oceanic conditions provided favourable dynamic and thermodynamic conditions for the genesis of cyclone Ockhi. About RIMES. The southern districts of Kerala and Tamil Nadu received heavy rainfall as Cyclone Ockhi, which originated near the Sri Lankan coast, rattled through the Arabian Sea towards Lakshwadeep islands. DEC 1 - 9:30 AM: Cyclone Ockhi killed nine people in coastal Kerala and Tamil Nadu and damaged dozens of houses in Tamil Nadu's Kanyakumari dstrict. 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