TY 02W(MALAKAS) near CAT 3// Invest 92S: subtropical: winds over 35kts//Remnants of 03W(MEGI) and Invest 91S, 12/18utc

JTWC IS ISSUING 6HOURLY WARNINGS ON TY 02W(MALAKAS).3HOURLY SATELLITE BULLETINS ARE ISSUED ON 02W, THE REMNANTS OF 03W ANDON INVEST 92S.

THE AREA OF CONVECTION (INVEST 92S) PREVIOUSLY LOCATED NEAR 31.0S 31.0E IS NOW LOCATED NEAR 31.4S 31.2E, APPROXIMATELY 360 KM EAST-NORTHEAST OF EAST LONDON, SOUTH AFRICA. THE SYSTEM IS CURRENTLY CLASSIFIED AS A SUBTROPICAL STORM, GENERALLY CHARACTERIZED AS HAVING BOTH TROPICAL AND MIDLATITUDE CYCLONE FEATURES. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY AND A 121635Z SSMIS 91GHZ COLOR COMPOSITE MICROWAVE IMAGE DEPICT IMPROVED CORE CONVECTION WITH TIGHTLY CURVED BANDING WRAPPING INTO A BANDING EYE. A 120737Z ASCAT- C IMAGE REVEALS A SYMMETRIC CIRCULATION WITH 35-40 KT WINDS. THE SYSTEM DEVELOPED PRIMARILY OVER LAND WITH STRONG BAROCLINIC FEATURES BUT HAS SINCE MOVED OFFSHORE. THE LLCC REMAINS VERTICALLY STACKED WITH A 500MB LOW HEIGHT CENTER WITH WEAK THERMAL ADVECTION AND A MID- LEVEL WARM CORE. THIS SYSTEM IS LOCATED UNDER AN UPPER-LEVEL LOW WITH POLEWARD VENTING INTO A JET TO THE SOUTH BUT IS LOCATED OVER COOL (24-25C) SEA SURFACE TEMPERATURES (SSTS). GLOBAL MODELS INDICATE INVEST 92S WILL TRACK SOUTHEAST OVER THE NEXT 72 HOURS WHILE STEADILY WEAKENING, UNDERGOING EXTRATROPICAL TRANSITION AND BECOMING EMBEDDED UNDER A MIDLATITUDE TROUGH. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 35 TO 40 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 993MB. FOR HAZARDS AND WARNINGS, REFERENCE THE FLEET WEATHER CENTER SAN DIEGO HIGH WINDS AND SEAS PRODUCT OR REFER TO LOCAL WMO DESIGNATED FORECAST AUTHORITY. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS LOW.

SSMIS 91GHZ COLOR COMPOSITE MICROWAVE IMAGE DEPICT IMPROVED CORE CONVECTION WITH TIGHTLY CURVED BANDING WRAPPING INTO A BANDING EYE.