...TROPICAL STORM HELENE FORMS OVER THE NORTHWESTERN CARIBBEAN SEA... ...HURRICANE AND STORM SURGE WATCHES REMAIN IN EFFECT FOR PORTIONS OF THE FLORIDA GULF COAST... As of 11:00 AM EDT Tue Sep 24 the center of Helene was located near 19.5, -84.3 with movement NW at 12 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 45 mph.