#2 Postby euro6208 » Thu Dec 20, 2012 8:41 pm
AN AREA OF CONVECTION HAS PERSISTED NEAR 11.5S 101.2E,
APPROXIMATELY 250 NM EAST OF COCOS ISLANDS. ANIMATED INFRARED (IR)
SATELLITE IMAGERY REVEALS A SYMMETRIC, WELL DEFINED LOW LEVEL
CIRCULATION CENTER (LLCC) WITH LIMITED CONVECTION. A 201906Z TRMM
85GHZ MICROWAVE IMAGE CONCURS WITH THE IR AND ADDITIONALLY SHOWS A
BROAD AREA OF DRY AIR SOUTH OF THE LLCC WITH SOME OF THE DRY AIR
BEGINNING TO BE PULLED TOWARDS THE LLCC. RECENT SCATTEROMETER FROM
201718Z SHOWS 10 TO 15 KNOT WINDS OVER THE NORTHERN HALF OF THE
LLCC AND STRONGER 20 TO 25 KNOT WINDS OVER THE SOUTHERN HALF. UPPER
LEVEL ANALYSIS REVEALS THE LLCC IS LOCATED UNDER AN AREA OF HIGH
(20 TO 30 KNOTS) VERTICAL WIND SHEAR AND HAS LIMITED POLEWARD
OUTFLOW. SEA SURFACE TEMPERATURES ARE FAVORABLE (28-30 DEGREES
CELSIUS) FOR DEVELOPMENT. MAXIMUM SUSTAINED SURFACE WINDS ARE
ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS
ESTIMATED TO BE NEAR 1007 MB. DUE TO THE UNFAVORABLE UPPER LEVEL
ENVIRONMENT, THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT
TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS LOW.
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