000 WTNT33 KNHC 231158 TCPAT3 BULLETIN TROPICAL STORM SANDY INTERMEDIATE ADVISORY NUMBER 4A NWS NATIONAL HURRICANE CENTER MIAMI FL AL182012 800 AM EDT TUE OCT 23 2012 ...SANDY MOVING NORTH-NORTHEASTWARD... SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...13.4N 77.9W ABOUT 325 MI...525 KM SSW OF KINGSTON JAMAICA MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...NNE OR 020 DEGREES AT 3 MPH...6 KM/H MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WATCH IS IN EFFECT FOR... * JAMAICA A TROPICAL STORM WARNING IS IN EFFECT FOR... * JAMAICA A TROPICAL STORM WATCH IS IN EFFECT FOR... * HAITI A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...IN THIS CASE WITHIN 36 HOURS. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED 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. THE GOVERNMENT OF JAMAICA COULD ISSUE A HURRICANE WARNING FOR JAMAICA LATER TODAY. INTERESTS IN EASTERN CUBA AND THE BAHAMAS SHOULD MONITOR THE PROGRESS OF SANDY. FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 800 AM EDT...1200 UTC...THE CENTER OF TROPICAL STORM SANDY WAS LOCATED NEAR LATITUDE 13.4 NORTH...LONGITUDE 77.9 WEST. SANDY IS MOVING TOWARD THE NORTH-NORTHEAST NEAR 3 MPH...6 KM/H. A CONTINUED NORTH-NORTHEASTWARD MOTION WITH SOME INCREASE IN FORWARD SPEED IS EXPECTED DURING THE NEXT DAY OR TWO. ON THE FORECAST TRACK...THE CENTER OF SANDY WILL MOVE NEAR OR OVER JAMAICA ON WEDNESDAY...AND APPROACH EASTERN CUBA WEDNESDAY NIGHT. MAXIMUM SUSTAINED WINDS ARE NEAR 45 MPH...75 KM/H...WITH HIGHER GUSTS. STRENGTHENING IS EXPECTED DURING THE NEXT 48 HOURS...AND SANDY IS FORECAST TO BE A HURRICANE WHEN IT APPROACHES JAMAICA ON WEDNESDAY. TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 90 MILES...150 KM FROM THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 997 MB...29.44 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...TROPICAL STORM CONDITIONS ARE EXPECTED TO REACH JAMAICA TONIGHT OR EARLY WEDNESDAY...WITH HURRICANE CONDITIONS POSSIBLE ON WEDNESDAY. TROPICAL STORM CONDITIONS ARE POSSIBLE IN HAITI BY EARLY WEDNESDAY. RAINFALL...SANDY IS EXPECTED TO PRODUCE TOTAL RAINFALL AMOUNTS OF 5 TO 10 INCHES ACROSS JAMAICA...HAITI...THE DOMINICAN REPUBLIC... AND EASTERN CUBA...WITH ISOLATED MAXIMUM AMOUNTS OF 16 INCHES POSSIBLE...ESPECIALLY IN AREAS OF MOUNTAINOUS TERRAIN. THESE RAINS MAY PRODUCE LIFE THREATENING FLASH FLOODS AND MUDSLIDES. STORM SURGE...A DANGEROUS 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. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE AND DESTRUCTIVE WAVES. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...1100 AM EDT. $$ FORECASTER PASCH