...MULTIPLE HURRICANE HUNTER AIRCRAFT INVESTIGATING ISAIAS AS IT MOVES EAST-NORTHEASTWARD... ...ADDITIONAL INTENSIFICATION EXPECTED... As of 1:00 AM CDT Thu Oct 08 the center of Isaias was located near 23.1, -91.7 with movement ENE at 9 mph. The minimum central pressure was 981 mb with maximum sustained winds of about 75 mph.