ZCZC MIATCDEP5 ALL TTAA00 KNHC DDHHMM HURRICANE EMILIA DISCUSSION NUMBER 16 NWS NATIONAL HURRICANE CENTER MIAMI FL EP052012 800 AM PDT WED JUL 11 2012 THE CLOUD PATTERN HAS NOT CHANGED DURING THE PAST SEVERAL HOURS. IT CONSISTS OF AN EYE SURROUNDED BY A RING OF VERY DEEP CONVECTION AND NO BANDING FEATURES. SATELLITE INTENSITY ESTIMATES STILL SUPPORT AN INITIAL INTENSITY OF 90 KNOTS. GIVEN THE CURRENT ANNULAR STRUCTURE ON SATELLITE...EMILIA WILL PROBABLY NOT CHANGE MUCH IN INTENSITY TODAY...BUT THE OVERALL TREND IS FOR THE HURRICANE TO GRADUALLY WEAKEN AS THE CIRCULATION STARTS TO INTERACT WITH COOLER WATERS IN ABOUT 12 HOURS OR SO. THE TRACK HAS NOT CHANGED EITHER...AND EMILIA CONTINUES TO MOVE TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 8 KNOTS. THE HURRICANE IS TRAPPED SOUTH OF A STRONG SUBTROPICAL RIDGE WHICH IS FORECAST BY GLOBAL MODELS TO PERSIST. THIS STEERING PATTERN WILL LIKELY KEEP EMILIA MOVING ON THE SAME GENERAL TRACK UNTIL THE END OF THE FORECAST PERIOD WITH NO IMPORTANT CHANGE IN FORWARD SPEED. BECAUSE THE STEERING CURRENTS ARE WELL ESTABLISHED...THE TRACK GUIDANCE IS IN FAIRLY GOOD AGREEMENT...AND MOST OF THE MODELS HAVE A WEAKENING CYCLONE PROGRESSING WESTNORTHWESTARD AND WESTWARD. THE OFFICIAL FORECAST IS VERY CLOSE TO THE MODEL CONSENSUS AND NOT TOO FAR FROM THE PREVIOUS ONE. FORECAST POSITIONS AND MAX WINDS INIT 11/1500Z 14.6N 117.3W 90 KT 105 MPH 12H 12/0000Z 15.1N 118.7W 85 KT 100 MPH 24H 12/1200Z 15.5N 120.5W 75 KT 85 MPH 36H 13/0000Z 16.0N 122.5W 70 KT 80 MPH 48H 13/1200Z 16.5N 125.0W 60 KT 70 MPH 72H 14/1200Z 17.0N 130.0W 45 KT 50 MPH 96H 15/1200Z 17.5N 135.0W 30 KT 35 MPH 120H 16/1200Z 17.5N 140.5W 25 KT 30 MPH $$ FORECASTER AVILA NNNN
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Page last modified: Monday, 31-Dec-2012 12:10:18 UTC