000 WTPZ43 KNHC 051443 TCDEP3 HURRICANE FELICIA DISCUSSION NUMBER 8 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP082009 ISSUED BY THE HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD 800 AM PDT WED AUG 05 2009 BASED UPON SATELLITE INTENSITY ESTIMATES AT 1200 UTC FROM TAFB AND SAB OF T6.0 AND T5.0...RESPECTIVELY... AND A PERSISTENT EYE WITH DEEP CONVECTION LOCATED IN THE EASTERN AND SOUTHEASTERN SEMICIRCLES...THE INITIAL INTENSITY IS BEING RAISED TO MAJOR HURRICANE STATUS AT 100 KT. LITTLE CHANGE IS ANTICIPATED TO THE INITIAL HEADING OVER THE NEXT COUPLE OF DAYS AS A DEEP MID-LEVEL TROUGH TO ITS NORTH REMAINS IN PLACE. A MORE WESTERLY TRACK IS EXPECTED BY DAYS 3 THROUGH 5 AS THIS TROUGH MOVES INLAND ACROSS THE CONTIGUOUS UNITED STATES AND IS REPLACED BY A MID-LEVEL HIGH CURRENTLY CENTERED NORTH OF THE HAWAIIAN ISLANDS. UNDER THE INFLUENCE OF COLDER SEA SURFACE TEMPERATURES FELICIA WILL LIKELY BE WEAKENING BY THAT POINT AND WILL BECOME MORE STRONGLY INFLUENCED BY THE LOWER-LEVEL TRADE WINDS. FOLLOWING THE NORTHWARD SHIFT IN THE GUIDANCE ENVELOPE FOR THIS PACKAGE...THE OFFICIAL FORECAST REFLECTS A SLIGHT NORTHWARD SHIFT AS WELL. THE ENVIRONMENT AROUND FELICIA REMAINS CONDUCIVE FOR THE STORM TO MAINTAIN ITS CURRENT INTENSITY AT LEAST OVER THE NEXT DAY AS THE AFOREMENTIONED MID-LEVEL CUT-OFF LOW NEAR CALIFORNIA IS INDUCING DIFFLUENCE ALOFT WHILE VERTICAL SHEAR IS EXPECTED TO REMAIN LIGHT. OCEANIC HEAT CONTENT SHOULD REMAIN SUFFICIENT FOR AT LEAST THE NEXT 36 HOURS UNTIL THE CONTINUED NORTHWARD SHIFT IN THE TRACK FORECAST PUTS FELICIA OVER COOLER WATERS. FORECAST POSITIONS AND MAX WINDS INITIAL 05/1500Z 14.1N 128.7W 100 KT 12HR VT 06/0000Z 15.0N 130.0W 105 KT 24HR VT 06/1200Z 16.4N 131.7W 105 KT 36HR VT 07/0000Z 17.4N 133.2W 100 KT 48HR VT 07/1200Z 18.3N 135.3W 95 KT 72HR VT 08/1200Z 19.9N 140.0W 75 KT 96HR VT 09/1200Z 20.5N 145.3W 65 KT 120HR VT 10/1200Z 20.5N 150.9W 50 KT $$ FORECASTER PEREIRA