...KIRK BECOMES A POWERFUL EXTRATROPICAL CYCLONE... ...STILL CAUSING LARGE SWELLS AND RIP CURRENT RISK ALONG THE U.S. EAST COAST... As of 3:00 PM GMT Mon Oct 7 the center of Kirk was located near 41.7, -38.4 with movement NE at 29 mph. The minimum central pressure was 963 mb with maximum sustained winds of about 75 mph.