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| #940278 (Received by flhurricane at: 10:38 PM 14.Sep.2018) TCPAT4 BULLETIN Tropical Storm Isaac Advisory Number 30 NWS National Hurricane Center Miami FL AL092018 1100 PM AST Fri Sep 14 2018 ...ISAAC QUICKLY LOSING ORGANIZATION AGAIN... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...15.4N 69.5W ABOUT 215 MI...345 KM S OF SANTO DOMINGO DOMINICAN REPUBLIC ABOUT 515 MI...830 KM ESE OF KINGSTON JAMAICA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in Jamaica should monitor the progress of Isaac. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Tropical Storm Isaac was located near latitude 15.4 North, longitude 69.5 West. Isaac is moving toward the west near 15 mph (24 km/h) and this general motion with a slight decrease in forward speed is expected over the next couple of days. A turn toward the west-northwest or northwest is possible by the end of the weekend, if Isaac has not degenerated into a trough of low pressure by then. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. The maximum winds are not expected to change very much during the next several days. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. The estimated minimum central pressure is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Isaac is expected to produce additional rainfall of 2 to 3 inches with isolated maximum totals of up to 5 inches across southeast Puerto Rico. Rainfall totals of 1 to 2 inches with maximum amounts of 3 inches are possible across the remainder of Puerto Rico, the Virgin Islands, the Leeward Islands and the northern Windward Islands. Rainfall totals of 2 to 3 inches with isolated maximum amounts of 4 inches are possible across the south- central portion of the Dominican Republic, southwest Haiti and most of Jamaica except for the eastern portion of Jamaica where rainfall totals of 2 to 4 inches and maximum amounts of 6 inches are possible. This rainfall may cause life-threatening flash floods. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. $$ Forecaster Zelinsky |
