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| #378886 (Received by flhurricane at: 10:38 AM 26.Sep.2010) TCDAT5 TROPICAL DEPRESSION MATTHEW DISCUSSION NUMBER 13 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL152010 1000 AM CDT SUN SEP 26 2010 VISIBLE/INFRARED SATELLITE IMAGERY AND SURFACE OBSERVATIONS INDICATE THAT THE DEEP CONVECTION ASSOCIATED WITH THE SYSTEM HAS BECOME DISORGANIZED AND THE MAXIMUM SUSTAINED WINDS ARE NO MORE THAN 20 KT. MATTHEW HAS WEAKENED TO A REMNANT LOW AND THIS WILL BE THE LAST ADVISORY. THE SYSTEM HAS BEEN MOVING WESTWARD WITH A GRADUALLY DECREASING FORWARD SPEED. OVER THE NEXT DAY OR TWO...THE REMNANT OF MATTHEW WILL LIKELY BECOME EMBEDDED WITHIN A BROAD CYCLONIC GYRE EXTENDING FROM THE NORTHWESTERN CARIBBEAN WESTWARD ACROSS NORTHERN CENTRAL AMERICA. THE REMNANT IS EXPECTED TO TURN SLOWLY CLOCKWISE WITHIN THE LARGER CYCLONIC CIRCULATION UNTIL DISSIPATION BY 36 TO 48 HOURS OR SOONER. EVEN THOUGH THE LOW IS NO LONGER A TROPICAL CYCLONE THE SYSTEM...IN CONJUNCTION WITH THE BROAD CYCLONIC GYRE...WILL CONTINUE TO PRODUCE TORRENTIAL RAINS OVER PORTIONS OF EASTERN MEXICO AND CENTRAL AMERICA OVER THE NEXT SEVERAL DAYS. FORECAST POSITIONS AND MAX WINDS INITIAL 26/1500Z 17.4N 92.9W 20 KT 12HR VT 27/0000Z 17.4N 93.4W 20 KT...POST-TROP/REMNT LOW 24HR VT 27/1200Z 17.2N 93.5W 20 KT...POST-TROP/REMNT LOW 36HR VT 28/0000Z 17.1N 93.3W 20 KT...POST-TROP/REMNT LOW 48HR VT 28/1200Z...DISSIPATED $$ FORECASTER PASCH |
