...GABRIELLE FORMS OVER THE CENTRAL TROPICAL ATLANTIC... ...FORECAST TO REMAIN OVER OPEN WATERS FOR SEVERAL DAYS... As of 11:00 AM AST Wed Sep 17 the center of Gabrielle was located near 17.5, -46.6 with movement NNW at 22 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 45 mph.