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#106346 (Received by flhurricane at: 11:17 PM 26.Aug.2006) TCDAT4 TROPICAL DEPRESSION DEBBY DISCUSSION NUMBER 22 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL042006 1100 PM EDT SAT AUG 26 2006 LATEST INFRARED SATELLITE IMAGERY DEPICTS DEBBY JUST A SWIRL OF LOW-LEVEL CLOUDS DEVOID OF ANY DEEP CONVECTION. DVORAK ESTIMATES FROM ALL THREE AGENCIES REMAIN AT 25 KT...AND A 2200 UTC QUIKSCAT PASS CONTAINED SOME 25 KT WIND VECTORS SUPPORTING THE SATELLITE CLASSIFICATIONS. BASED UPON THIS INFORMATION THE INITIAL INTENSITY REMAINS AT 25 KT. DEBBY IS FORECAST TO BECOME A REMNANT LOW IN 12 HOURS...CONTINGENT UPON NO RE-DEVELOPMENT OF ANY DEEP CONVECTION. RECENT FSU CYCLONE PHASE DIAGRAMS SHOW TRANSITION TO AN EXTRATROPICAL CYCLONE IN 24 HOURS AS THE CYCLONE BECOMES MORE INFLUENCED BY THE BAROCLINIC ZONE TO ITS NORTHWEST. THE OFFICIAL FORECAST REFLECTS THIS REASONING AS WELL. THE INITIAL MOTION IS 330/10. DEBBY IS CURRENTLY BEING INFLUENCED BY A LARGE AMPLITUDE TROUGH OVER THE NORTHWESTERN ATLANTIC AS WELL AS AN UPPER-LEVEL LOW TO THE SOUTHWEST OF THE CYCLONE. THE OFFICIAL FORECAST IS CLOSE TO THE PREVIOUS FORECAST WITH ABSORPTION OF DEBBY BY THE FRONTAL ZONE OCCURRING IN ABOUT 36 HOURS. FORECAST POSITIONS AND MAX WINDS INITIAL 27/0300Z 27.9N 48.5W 25 KT 12HR VT 27/1200Z 29.7N 48.7W 25 KT...REMNANT LOW 24HR VT 28/0000Z 32.1N 48.2W 30 KT...EXTRATROPICAL 36HR VT 28/1200Z...ABSORBED BY FRONT |