ZCZC MIATCDEP2 ALL TTAA00 KNHC DDHHMM TROPICAL STORM GILMA DISCUSSION NUMBER 13 NWS NATIONAL HURRICANE CENTER MIAMI FL EP072012 200 AM PDT FRI AUG 10 2012 COLD WATERS APPEAR TO BE TAKING ITS TOLL ON GILMA. WHILE THE REMNANTS OF AN EYE ARE STILL PRESENT...THE CENTRAL CONVECTION HAS WEAKENED AND BECOME ASYMMETRIC DURING THE PAST FEW HR. SATELLITE INTENSITY ESTIMATES ARE 65 KT FROM SAB AND 55 KT FROM TAFB. BASED ON THE DECAY OF THE CLOUD PATTERN SINCE THE PREVIOUS ADVISORY...THE INITIAL INTENSITY IS DECREASED TO 55 KT. GILMA HAS MOVED A LITTLE TO THE RIGHT OF THE PREVIOUS FORECAST DURING THE PAST FEW HR...WITH THE INITIAL MOTION NOW 355/5. AS MENTIONED IN THE PREVIOUS DISCUSSION...GILMA SHOULD MOVE SLOWLY NORTH-NORTHWESTWARD TO NORTHWESTWARD FOR THE NEXT 72 HR UNTIL THE SYSTEM DISSIPATES. THE NEW FORECAST TRACK IS SHIFTED A LITTLE TO THE EAST OF THE PREVIOUS TRACK BASED ON THE INITIAL POSITION AND MOTION...AND IT LIES NEAR THE CENTER OF THE TRACK GUIDANCE ENVELOPE. GILMA SHOULD CONTINUE TO WEAKEN...WITH THE WEAKENING RATE INCREASING AFTER 36 HR DUE TO AN INCREASE IN VERTICAL WIND SHEAR. THE INTENSITY FORECAST CALLS FOR GILMA TO BECOME A DEPRESSION BY 48 HR AND A REMNANT LOW IN 72 HR...AND IT IS POSSIBLE THE CYCLONE COULD WEAKEN FASTER THAN CURRENTLY FORECAST. THE SYSTEM IS LIKELY TO DISSIPATE COMPLETELY AFTER 72 HR AS IT GETS ABSORBED BY ANOTHER WEATHER SYSTEM DEVELOPING TO THE EAST. FORECAST POSITIONS AND MAX WINDS INIT 10/0900Z 18.4N 119.0W 55 KT 65 MPH 12H 10/1800Z 18.9N 119.2W 50 KT 60 MPH 24H 11/0600Z 19.7N 119.6W 45 KT 50 MPH 36H 11/1800Z 20.3N 119.9W 40 KT 45 MPH 48H 12/0600Z 20.8N 120.2W 30 KT 35 MPH 72H 13/0600Z 21.5N 121.0W 25 KT 30 MPH...POST-TROP/REMNT LOW 96H 14/0600Z...DISSIPATED $$ FORECASTER BEVEN NNNN
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Page last modified: Monday, 31-Dec-2012 12:10:23 UTC