...HELENE STRENGTHENING AS THE CENTER APPROACHES THE NORTHEASTERN COAST OF THE YUCATAN PENINSULA... ...NEW TROPICAL STORM WATCHES AND WARNINGS FOR PORTIONS OF THE UNITED STATES... As of 4:00 AM CDT Wed Sep 25 the center of Helene was located near 20.7, -86.2 with movement NW at 9 mph. The minimum central pressure was 985 mb with maximum sustained winds of about 65 mph.