…NOAA AND AIR FORCE HURRICANE HUNTER AIRCRAFT SUGGEST THAT ERIN IS UNDERGOING AN EYEWALL REPLACEMENT CYCLE… As of 8:00 PM AST Sat Aug 16 the center of Erin was located near 20.0, -64.6 with movement W at 15 mph. The minimum central pressure was 934 mb with maximum sustained winds of about 150 mph.