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ZCZC MIATCDAT1 ALL TTAA00 KNHC DDHHMM TROPICAL DEPRESSION SIXTEEN DISCUSSION NUMBER 4 NATIONAL WEATHER SERVICE MIAMI FL 10 AM EST SUN NOV 14 1999 THE LOW LEVEL CENTER MAY BE OBSCURED BY DEEP CONVECTION AND IS DIFFICULT TO LOCATE ON EARLY VISIBLE IMAGERY. THE INITIAL MOTION ESTIMATE IS 100/07 AND THE TRACK SCENARIO REMAINS THE SAME AS IN THE PREVIOUS ADVISORY. A MOSTLY EAST TO EAST-NORTHEASTWARD MOTION IS EXPECTED FOR THE NEXT 72 HOURS AS THE UPPER TROUGH TO THE NORTH OF THE DEPRESSION DEEPENS AND EXTENDS THE WESTERLIES FURTHER SOUTHWARD. SATELLITE INTENSITY ESTIMATES ARE AT TROPICAL STORM FORCE BUT THERE HAVE BEEN NO SHIP OR ISLAND REPORTS TO CONFIRM THIS. AN AIRCRAFT IS SCHEDULED TO INVESTIGATE THIS AFTERNOON AND I WILL DELAY UPGRADING THE DEPRESSION UNTIL THE AIRCRAFT REPORTS TROPICAL STORM FORCE WINDS. MEANWHILE THE OFFICIAL FORECAST IS FOR THE DEPRESSION TO BECOME A TROPICAL STORM IN THE NEXT 12 HOURS. LAWRENCE FORECAST POSITIONS AND MAX WINDS INITIAL 14/1500Z 15.9N 79.5W 30 KTS 12HR VT 15/0000Z 15.9N 78.1W 35 KTS 24HR VT 15/1200Z 16.2N 76.4W 35 KTS 36HR VT 16/0000Z 16.5N 74.0W 35 KTS 48HR VT 16/1200Z 17.0N 71.2W 40 KTS 72HR VT 17/1200Z 18.0N 66.0W 40 KTS NNNN