Abstract
The graphical integration technique of Brier has been employed in evolving an objective method for predicting the occurrence of rainfall of 30 mm or more m 24 hours over Bombay and Thana Districts in the subsequent 24 hours, during July-August. Easily determinable variables-(l) 700-mb contour height difference between Calcutta and Visakhapatnam, (2) 850-mb contour height difference between Nagpur and Delhi (3) surface pressure difference between Vengurla and Baroda and (4) precipitable water over Bombay, have been utilized in evolving this technique. Data for the months of July and August for 1957-1961 have been used as basic data and corresponding ones for 1962 as the test data. The method gave correct forecasts of rainfall >=30 mm on 70 per cent occasions.
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