Indian Meteorological Department (IMD) on Friday said isolated heavy to very heavy rainfall will continue to lash parts of southern India till Monday including Tamil Nadu, Puducherry & Karaikal. Meanwhile, light to average fairly widespread rains are expected across the states over the next 4 to 5 days.IMD said, a cyclonic circulation lies over Comorin Area & adjoining Sri Lanka coasts and strong northeasterly winds are prevailing over Tamil Nadu coast & south Coastal Andhra Pradesh at lower levels.