Upper air circulation, trough over TN to bring heavy to moderate rain in several dists

Chennai, Oct 6 (UNI) An Upper air circulation over North Tamil Nadu and Trough would bring heavy to moderate rains in several districts of the state for the next 5-6 days. Met office Tuesday said rainfall occurred at isolated places over Tamil Nadu. Dry weather prevailed over Puducherry and Karaikal area. There was a departure in mercury levels from normal with maximum temperatures recording above normal by 2-4 deg C at many places over Tamil Nadu and Puducherry and near normal over Karaikal area. It said an upper air cyclonic circulation lies over Southeast Arabian Sea off south Kerala coast…