Westward moving sea level low pressure systems in the south Bay of Bengal during southwest monsoon

The movement of low pressure systems from the east, across south Bay of Bengal and south Indian Peninsula, during July and August, when the southwest monsoon has established itself over India has been studied for a 20-year period from 1946 to 1965, Only well marked systems, which could be delineated on the sea level synoptic chart, are reported In the present paper, The characteristics of these systems and its relation with other systems breaks in southwest monsoon etc are discussed. The effect of migratory lows on rainfall has been studied for Madras State, Kerala and coastal Mysore, While Madras gets good rain with scattered heavy to very heavy falls, the rainfall over the West Coast particularly in the northern parts, is comparatively less marked.