...MELISSA BECOMES A POWERFUL POST-TROPICAL CYCLONE OVER THE NORTHWEST ATLANTIC... ...THIS IS THE LAST NHC ADVISORY... As of 11:00 AM AST Fri Oct 31 the center of Melissa was located near 39.0, -60.5 with movement NE at 48 mph. The minimum central pressure was 973 mb with maximum sustained winds of about 85 mph.