But the rainfall is expected to be high mainly because the north-east monsoon is active and hence the moist north-easterly winds converging along Tamil Nadu coast would bring in copious amounts of rainfall," said IMD`s senior scientist Sunitha Devi. The depression is very likely to continue to move, and cross north Tamil Nadu and adjoining south Andhra Pradesh coasts between Puducherry and Chennai early Friday morning, the India Meteorological Department (IMD) said. Its Land Surface Model have shows as high as 95-100 per cent saturation in few watersheds of southern parts of Rayalaseema, southern parts of Coastal Andhra Pradesh & Yanam adjoining to North Tamil Nadu and Tamil Nadu, Puducherry and Karaikal subdivisions of IMD and up to 80-85 per cent saturation in few watersheds of Rayalaseema and Kerala IMD subdivision.
Meanwhile, the India Meteorological Department (IMD) has issued flash flood warnings for Tamil Nadu, Andhra Pradesh and Pudducherry. The heavy rainfall is a result of the depression over the Bay of Bengal, off north Tamil Nadu coast that moved with a speed of 23 kmph on Thursday morning and lay centred at about 250 km from Chennai, 220 km from Puducherry and 210 km from Karaikal. In view of the heavy rainfall in several districts of Tamil Nadu and Pudducherry, and the reservoirs in the region getting heavy inflows, the Central Water Commission (CWC) on Thursday issued an advisory for the dam operators to keep strict vigil and release water carefully.