The 1999 Odisha cyclone (IMD designation BOB 03, JTWC designation 05B) was the strongest recorded tropical cyclone in the North Indian Ocean and among the most destructive in the region. The 1999 Odisha cyclone organized into a tropical depression in the Andaman Sea on 25 October, though its origins could be traced back to an area of storms in the Sulu Sea four days prior. The disturbance gradually strengthened as it took a west - northwesterly path, reaching cyclonic storm strength the next day. Taking advantage of highly favorable conditions, the storm rapidly intensified, attaining super cyclonic storm intensity on 28 October before peaking with winds of 260 km / h (160 mph) and a record - low pressure of 912 mbar (hPa; 26.93 inHg). The storm maintained this intensity as it made landfall on Odisha on 29 October. The cyclone steadily weakened due to persistent land interaction and dry air, remaining quasi-stationary for two days before slowly drifting offshore as a much weaker system; the storm dissipated on 1 November over the Bay of Bengal.
the super cyclone which slammed orissa in 1999 was with an approximate wind speed of
260 km / h (160 mph)