...DEPRESSION BECOMES TROPICAL STORM IMELDA... ...TROPICAL STORM CONDITIONS EXPECTED OVER THE CENTRAL AND NORTHWESTERN BAHAMAS THIS AFTERNOON AND EVENING... As of 2:00 PM EDT Sun Sep 28 the center of Imelda was located near 23.9, -77.3 with movement N at 7 mph. The minimum central pressure was 998 mb with maximum sustained winds of about 40 mph.