ZCZC MIATCDEP3 ALL TTAA00 KNHC DDHHMM TROPICAL DEPRESSION THIRTEEN-E DISCUSSION NUMBER 6 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP132007 200 PM PDT THU SEP 20 2007 DEEP CONVECTION HAS DISSIPATED IN THE SYSTEM DURING THE LAST SEVERAL HOURS. A 1422Z QUIKSCAT PASS AND AN 18Z SHIP REPORT NORTHWEST OF THE CENTER SUGGESTED WINDS OF 25 TO 30 KT. DVORAK ESTIMATES HAVE ALSO DROPPED TO 25 KT...WHICH IS CHOSEN AS THE CURRENT INTENSITY. TROPICAL DEPRESSION THIRTEEN LIKELY HAS DECAYED DUE TO COOL SSTS AND A STABLE AND DRY ATMOSPHERE. GIVEN THE CONTINUED LACK OF CONVECTION...THE SYSTEM NO LONGER MEETS THE CRITERION FOR A TROPICAL CYCLONE AND THIS WILL BE ITS LAST ADVISORY. THE DISSIPATING TROPICAL CYCLONE IS MOVING TOWARD THE WEST AT ABOUT 4 KT DUE TO THE INFLUENCE OF A WEAK RIDGE TO ITS NORTH. LOW-LEVEL STEERING SHOULD NEARLY COLLAPSE IN THE NEXT DAY OR SO WITH A TURN BACK TO THE EAST INDICATED BETWEEN 24 TO 48 HOURS FOR THE REMNANT LOW. FOR ADDITIONAL INFORMATION ON THE REMNANT LOW PLEASE SEE HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE...UNDER AWIPS HEADER NFDHSFEPI AND WMO HEADER FZPN02 KWBC. FORECAST POSITIONS AND MAX WINDS INITIAL 20/2100Z 17.7N 130.4W 25 KT 12HR VT 21/0600Z 17.6N 130.6W 20 KT...REMNANT LOW 24HR VT 21/1800Z 17.5N 130.4W 20 KT...REMNANT LOW 36HR VT 22/0600Z 17.4N 130.0W 20 KT...REMNANT LOW 48HR VT 22/1800Z 17.4N 129.3W 20 KT...REMNANT LOW 72HR VT 23/1800Z...DISSIPATED $$ FORECASTER LANDSEA/FRANKLIN NNNN
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Page last modified: Friday, 02-Nov-2007 21:21:05 UTC