| Summary: | Calculations of the Palmer drought index indicated, however, that most tropical cyclone rainfall in the period 1931-1960 occurred during periods of adequate or surplus moisture. A relatively small number of "established droughts" were completely terminated as a result of rainfall associated with tropic cyclones Estimates of monthly precipitation probabilities were found to be sharply reduced for each of these three months when tropical cyclone rainfall was excluded from the appropriate components of the total precipitation distributions Monthly rainfall amounts attributed to tropical cyclones in June through October exceeded 10 percent of the normal total monthly precipitation in the zone exceeding 100 to 250 miles inland from the Gulf and Atlantic coasts; substantially higher percentages, on a monthly basis, were noted in August, September, and October in several areas Three measures of impact of rainfall associated with tropical cyclones on the pattern of precipitation in the eastern and southern United States have been investigated Includes bibliographical references (pages 58-59) Appendix B. Index of precipitation stations. pp. 65 Appendix A. Chronology of tropical cyclones that affected the United States, 1931-1960. pp. 61 References. pp. 58 Chapter 4. Summary and conclusions. pp. 56 Chapter 3. Results and discussion: Percentages of total precipitation attributable to tropical cyclones -- Monthly median precipitation -- Differences in median precipitation amounts -- Examples of precipitation probabilities at individual stations -- Normal monthly precipitation probabilities -- Palmer Drought Index and tropical cyclone rainfall -- Tropical cyclone rainfall and moisture departures. pp. 13 Chapter 2. Data and techniques: Tropical cyclones -- Tropical cyclone rainfall -- North Atlantic tropical cyclone frequencies -- Collection and treatment of the rainfall data -- Precipitation patterns: eastern and southern United States. pp. 3 Chapter 1. Introduction. pp. 1 Abstract. pp. 1 Calculations of the Palmer drought index indicated, however, that most tropical cyclone rainfall in the period 1931-1960 occurred during periods of adequate or surplus moisture. A relatively small number of "established droughts" were completely terminated as a result of rainfall associated with tropic cyclones Estimates of monthly precipitation probabilities were found to be sharply reduced for each of these three months when tropical cyclone rainfall was excluded from the appropriate components of the total precipitation distributions Monthly rainfall amounts attributed to tropical cyclones in June through October exceeded 10 percent of the normal total monthly precipitation in the zone exceeding 100 to 250 miles inland from the Gulf and Atlantic coasts; substantially higher percentages, on a monthly basis, were noted in August, September, and October in several areas Three measures of impact of rainfall associated with tropical cyclones on the pattern of precipitation in the eastern and southern United States have been investigated Mode of access: Internet.
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