1. Introduction
The period June to September of over 122 days is
a period of south-west monsoon over India and is
the dominant season of rainfall. About 85% of the
annual rainfall over most parts of the country take
place during this season. The daily spatial and
temporal rainfall variation is due to intensity of
monsoon current. The intensity of monsoon
current is dependent upon the synoptic features
such as depressions in the Bay, oscillation of the