ttough several studies by De and Joshi (1995,1999); Srivastava et al. (2000) showed a decreasing trend in the frequency of Tropical Cyclones (TCs) and Monsoon Depressions (MDs) over the north Indian Ocean (tte Bay ofBengal and the Arabian Sea) in recent years, their potential for damage and destruction still continues to be significant. A severe super cyclonic storm with winds of up to 250 km/h-1, crossed the coast in Orissa on October 29, 1999. ttis proved to be the worst cyclone of the century in the Orissa region and was responsible for as many as 10,000 deaths (Table 6.4), for rendering millions homeless and for extensive damage (WMO 1999). Over the past decades, the frequency of tropical cyclones in the north Indian ocean has registered significant increasing trends (20% per hundred years) during November and May which account for maximum number of intense cyclones (Singh et al. 2000).
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