簽到天數: 971 天 [LV.10]以壇為家III
|
jwpk9899|2012-7-26 14:15
|
顯示全部樓層
(1) THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 7.3N 131.6E
IS NOW LOCATED NEAR 11.1N 130.9E, APPROXIMATELY 315 NM NORTHWEST OF
PALAU. ANIMATED MULTISPECTRAL SATELLITE IMAGERY SHOWS CONVECTION HAS
BEEN SLOWLY COALESCING AROUND A BROAD UNORGANIZED LOW LEVEL
CIRCULATION CENTER (LLCC). A 260022Z ASCAT PASS INDICATED THE LLCC
HAS MOVED NORTHWARD OVER THE PAST 12 HOURS WITH WINDS ALONG THE
SOUTHEASTERN QUADRANT BETWEEN 10 AND 15 KNOTS. THE LLCC REMAINS
LOCATED WITHIN THE MONSOON TROUGH, WITH THE TROUGH EXTENDING TO THE
SOUTHWEST OF PALAU. UPPER LEVEL ANALYSIS INDICATES THE LLCC IS
MOVING TOWARDS AN AXIS OF MODERATE VERTICAL WIND SHEAR (15-20 KNOTS)
WITH A TROPICAL UPPER TROPOSPHERIC TROUGH LOCATED TO THE NORTHEAST
OF GUAM IS BEGINNING TO INCREASE EASTERLY OUTFLOW. NUMERICAL MODEL
GUIDANCE SUGGESTS A GRADUAL CONSOLIDATION OF THIS LLCC AS IT TRACKS
IN A GENERALLY POLEWARD DIRECTION OVER THE NEXT FEW DAYS. SEA
SURFACE TEMPERATURES (SSTS) IN THE AREA ARE FAVORABLE FOR TROPICAL
CYCLOGENESIS RANGING FROM 28-30 DEGREES CELSIUS. MAXIMUM SUSTAINED
SURFACE WINDS ARE ESTIMATED AT 10 TO 15 KNOTS. MINIMUM SEA LEVEL
PRESSURE IS ESTIMATED TO BE NEAR 1008 MB. BASED ON THE PERSISTENT
CONVECTION, WARM SSTS, AND INCREASING OUTFLOW CHANNELS, THE
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE
WITHIN THE NEXT 24 HOURS IS UPGRADED TO MEDIUM.
MEDIUM囉 今晚到明天或許有機會TCFA哦 |
|