000 WTNT34 KNHC 181150 TCPAT4 BULLETIN HURRICANE DEAN INTERMEDIATE ADVISORY NUMBER 21A NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL042007 800 AM AST SAT AUG 18 2007 ...CORE OF HURRICANE DEAN PASSES WELL SOUTH OF PUERTO RICO... A HURRICANE WARNING REMAINS IN EFFECT FOR THE SOUTH COAST OF THE DOMINICAN REPUBLIC FROM BARAHONA WESTWARD TO THE HAITI-DOMINICAN REPUBLIC BORDER...AND FOR THE SOUTHWESTERN PENINSULA OF HAITI FROM THE HAITI-DOMINICAN REPUBLIC BORDER TO PORT-AU PRINCE. A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED WITHIN THE WARNING AREA WITHIN THE NEXT 24 HOURS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO COMPLETION. A HURRICANE WATCH REMAINS IN EFFECT FOR JAMAICA. A HURRICANE WARNING WILL LIKELY BE REQUIRED FOR JAMAICA LATER THIS MORNING. A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 36 HOURS. A TROPICAL STORM WARNING REMAINS IN EFFECT FOR THE BRITISH VIRGIN ISLANDS....U.S. VIRGIN ISLANDS AND PUERTO RICO. THESE WARNINGS WILL LIKELY BE DISCONTINUED ON SATURDAY MORNING. A TROPICAL STORM WARNING IS IN EFFECT ALONG THE SOUTH COAST OF THE DOMINICAN REPUBLIC FROM CABO ENGANO WESTWARD TO BARAHONA...AND FOR COAST OF HAITI NORTH OF PORT-AU-PRINCE TO THE NORTHERN HAITI-DOMINICAN REPUBLIC BORDER. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED WITHIN THE WARNING AREA WITHIN THE NEXT 24 HOURS. A TROPICAL STORM WATCH IS IN EFFECT FOR PORTIONS OF CUBA...FROM THE PROVINCE OF CAMAGUEY EASTWARD TO THE PROVINCE OF GUANTANAMO. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 36 HOURS. INTERESTS ELSEWHERE IN THE CENTRAL AND WESTERN CARIBBEAN...INCLUDING WESTERN CUBA...THE CAYMAN ISLANDS...AND THE YUCATAN PENINSULA OF MEXICO...SHOULD CLOSELY MONITOR THE PROGRESS OF DEAN. FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL WEATHER OFFICE. AT 800 AM AST...1200Z...THE CENTER OF HURRICANE DEAN WAS LOCATED NEAR LATITUDE 15.4 NORTH...LONGITUDE 67.9 WEST OR ABOUT 615 MILES... 990 KM...EAST-SOUTHEAST OF KINGSTON JAMAICA AND ABOUT 250 MILES... 400 KM...SOUTH-SOUTHEAST OF SANTO DOMINGO IN THE DOMINICAN REPUBLIC. DEAN IS MOVING TOWARD THE WEST NEAR 17 MPH...28 KM/HR. A GENERAL WEST TO WEST-NORTHWEST MOTION IS EXPECTED DURING THE NEXT 24 HOURS. ON THIS TRACK...THE CORE OF THE HURRICANE WILL BE MOVING SOUTH OF THE DOMINICAN REPUBLIC LATER TODAY AND SOUTH OF HAITI TONIGHT. MAXIMUM SUSTAINED WINDS ARE NEAR 150 MPH...240 KM/HR...WITH HIGHER GUSTS. SATELLITE IMAGES SUGGEST THAT DEAN COULD HAVE WEAKENED A LITTLE DURING THE PAST FEW HOURS...BUT REMAINS AS A DANGEROUS CATEGORY FOUR HURRICANE ON THE SAFFIR-SIMPSON SCALE. AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT IS CURRENTLY APPROACHING THE HURRICANE AND WILL DETERMINE THE INTENSITY. SOME FLUCTUATIONS IN INTENSITY ARE LIKELY DURING THE NEXT 24 HOURS. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 60 MILES...95 KM...FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 205 MILES...335 KM. NOAA BUOY 42059 RECENTLY REPORTED A 1-MINUTE AVERAGE WIND OF 65 MPH...105 KM/HR AND A WIND GUST OF 76 MPH....122 KM/HR AS DEAN MOVED NEARBY. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 930 MB...27.46 INCHES. STORM TOTAL RAINFALL AMOUNTS OF 1 TO 2 INCHES CAN BE EXPECTED FROM DEAN OVER PUERTO RICO...THE DOMINICAN REPUBLIC AND HAITI WITH MAXIMUM AMOUNTS UP TO 5 INCHES POSSIBLE. THESE RAINS COULD CAUSE LIFE-THREATENING FLASH FLOODS AND MUDSLIDES. REPEATING THE 800 AM AST POSITION...15.4 N...67.9 W. MOVEMENT TOWARD...WEST NEAR 17 MPH. MAXIMUM SUSTAINED WINDS...150 MPH. MINIMUM CENTRAL PRESSURE...930 MB. THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 1100 AM AST. $$ FORECASTER AVILA