789 WTNT34 KNHC 101435 TCPAT4 BULLETIN Hurricane Isaac Advisory Number 12 NWS National Hurricane Center Miami FL AL092018 1100 AM AST Mon Sep 10 2018 ...ISAAC SHOWING LITTLE CHANGE IN STRENGTH AT THIS TIME... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...14.7N 43.9W ABOUT 1150 MI...1855 KM E OF THE WINDWARD ISLANDS MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in the Lesser Antilles should monitor the progress of Isaac. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Hurricane Isaac was located near latitude 14.7 North, longitude 43.9 West. Isaac is moving toward the west near 14 mph (22 km/h). A westward motion with a slight increase in forward speed is expected through the end of the week. On the forecast track, Isaac should move across the Lesser Antilles and into the eastern Caribbean Sea on Thursday. Maximum sustained winds are near 75 mph (120 km/h) with higher gusts. Additional strengthening is expected over the next day or two. Weakening is forecast to begin by the middle of the week as Isaac approaches the Lesser Antilles. Hurricane-force winds extend outward up to 10 miles (20 km) from the center and tropical-storm-force winds extend outward up to 45 miles (75 km). The estimated minimum central pressure is 993 mb (29.33 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. $$ Forecaster Pasch