000 WTNT33 KNHC 232347 TCPAT3 BULLETIN TROPICAL STORM SANDY INTERMEDIATE ADVISORY NUMBER 6A NWS NATIONAL HURRICANE CENTER MIAMI FL AL182012 800 PM EDT TUE OCT 23 2012 ...SANDY MOVING NORTH-NORTHEASTWARD TOWARD JAMAICA... SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...14.8N 77.5W ABOUT 225 MI...360 KM SSW OF KINGSTON JAMAICA MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...NNE OR 20 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...993 MB...29.32 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WARNING IS IN EFFECT FOR... * JAMAICA * CUBAN PROVINCES OF CAMAGUEY...LAS TUNAS...GRANMA...SANTIAGO DE CUBA...HOLGUIN...AND GUANTANAMO A TROPICAL STORM WARNING IS IN EFFECT FOR... * HAITI A TROPICAL STORM WATCH IS IN EFFECT FOR... * THE BAHAMAS A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO COMPLETION. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN 24 TO 36 HOURS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. INTERESTS IN SOUTH FLORIDA SHOULD MONITOR THE PROGRESS OF SANDY. A TROPICAL STORM WATCH MAY BE REQUIRED FOR PORTIONS OF SOUTHEAST FLORIDA AND THE FLORIDA KEYS TONIGHT OR EARLY WEDNESDAY. FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 800 PM EDT...0000 UTC...THE CENTER OF TROPICAL STORM SANDY WAS LOCATED NEAR LATITUDE 14.8 NORTH...LONGITUDE 77.5 WEST. SANDY IS MOVING TOWARD THE NORTH-NORTHEAST NEAR 8 MPH...13 KM/H...AND A NORTH-NORTHEASTWARD TO NORTHWARD MOTION AT A FASTER FORWARD SPEED IS EXPECTED OVER THE NEXT 48 HOURS. ON THE FORECAST TRACK...THE CENTER OF SANDY WILL MOVE NEAR OR OVER JAMAICA WEDNESDAY AFTERNOON AND NEAR OR OVER EASTERN CUBA WEDNESDAY NIGHT. MAXIMUM SUSTAINED WINDS ARE NEAR 50 MPH...85 KM/H...WITH HIGHER GUSTS. SANDY IS EXPECTED TO STRENGTHEN INTO A HURRICANE BY THE TIME IT NEARS JAMAICA. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 105 MILES...165 KM FROM THE CENTER. AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT IS CURRENTLY INVESTIGATING SANDY. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 993 MB...29.32 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...TROPICAL STORM CONDITIONS ARE EXPECTED TO REACH JAMAICA TONIGHT OR EARLY WEDNESDAY...WITH HURRICANE CONDITIONS EXPECTED ON WEDNESDAY. TROPICAL STORM CONDITIONS ARE EXPECTED IN PORTIONS OF HAITI ON WEDNESDAY. HURRICANE CONDITIONS ARE POSSIBLE IN EASTERN CUBA BY WEDNESDAY EVENING OR WEDNESDAY NIGHT. TROPICAL STORM CONDITIONS ARE POSSIBLE IN THE CENTRAL AND SOUTHEASTERN BAHAMAS ON THURSDAY. RAINFALL...SANDY IS EXPECTED TO PRODUCE TOTAL RAINFALL AMOUNTS OF 6 TO 12 INCHES ACROSS JAMAICA...HAITI...THE DOMINICAN REPUBLIC AND EASTERN CUBA...WITH ISOLATED MAXIMUM AMOUNTS OF 20 INCHES POSSIBLE. THESE RAINS MAY PRODUCE LIFE-THREATENING FLASH FLOODS AND MUD SLIDES...ESPECIALLY IN AREAS OF MOUNTAINOUS TERRAIN. RAINFALL TOTALS OF 3 TO 5 INCHES ARE EXPECTED OVER PORTIONS OF THE BAHAMAS...WITH ISOLATED MAXIMUM AMOUNTS OF 12 INCHES. STORM SURGE...A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 1 TO 3 FEET ABOVE NORMAL TIDE LEVELS ALONG THE SOUTHERN AND EASTERN COAST OF JAMAICA. A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 3 TO 5 FEET ABOVE NORMAL TIDE LEVELS IN SOUTHEASTERN CUBA. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE AND DANGEROUS WAVES. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...1100 PM EDT. $$ FORECASTER BEVEN