Probability analysis of rainfall characteristics of Semiliguda in Koraput, Orissa

The knowledge of probable period of onset of monsoon, amount of rainfall and its distribution over the cropping season are important for timely seedbed preparation, selection of crop varieties and choice of cropping pattern. The probability analysis of rainfall data revealed that the onset of monsoon is on 11^th June. The probability distribution of seasonal rainfall indicated that the occurrence of 75% probable rainfall in kharif, summer and rabi season are 1095.5 mm, 91.4 mm and 83 mm respectively, whereas 1274.5 mm is the annual rainfall. It was forecasted that the occurrence of rainy days (>2.5 mm rainfall per day) is 70 days per annum.