JTWC:DOWNGRADED TO LOW THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 18.2S 39.1E, IS NOW LOCATED NEAR 21.0S 36.6E, APPROXIMATELY 370 NM NORTHEAST OF MAPUTO, MOZAMBIQUE. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS AN ELONGATING, FULLY-EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC) WITH ISOLATED DEEP CONVECTION FLARING OVER THE NORTHWEST QUADRANT OF THE LLCC. A 300633Z ASCAT PASS INDICATED WINDS NEAR THE CENTER HAVE WEAKENED OVER THE PAST 24 HOURS, WITH A MAXIMUM BETWEEN 20 TO 25 KNOTS. UPPER LEVEL ANALYSIS INDICATES THE ENVIRONMENT IS MARGINAL WITH A RIDGE TO THE SOUTHWEST CREATING MODERATE LEVELS (20 TO 25 KNOTS) OF VERTICAL WIND SHEAR OVER THE LLCC. DYNAMIC MODEL GUIDANCE INDICATES THAT THE SYSTEM WILL CONTINUE TO WEAKEN AS IT TRACKS SOUTHWESTWARD. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1004 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS DOWNGRADED TO LOW. |
JTWC : CANCELLED TCFA REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 15.4S 41.6E IS NOW LOCATED NEAR 18.2S 39.1E, APPROXIMATELY 585 NM NORTHEAST OF MAPUTO, MOZAMBIQUE. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A DEFINED YET FULLY-EXPOSED AND WEAKENING LOW-LEVEL CIRCULATION CENTER (LLCC) WITH ISOLATED DEEP CONVECTION FLARING OVER THE NORTHWEST QUADRANT OF THE LLCC. A 291130Z NOAA-19 IMAGE INDICATES WEAK, SHALLOW CONVECTIVE BANDING WRAPPING INTO A DEFINED LLCC. A 290908Z OCEANSAT IMAGE INDICATES 20 TO 25 KNOT WINDS OVER THE EASTERN SEMI-CIRCLE. THE LLCC IS LOCATED WITHIN A MARGINAL ENVIRONMENT CHARACTERIZED BY MODERATE VERTICAL WIND SHEAR AND WEAK DIFFLUENCE. DYNAMIC MODEL GUIDANCE INDICATES THAT THE SYSTEM WILL CONTINUE TO WEAKEN AS IT TRACKS SOUTHWESTWARD. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1004 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS DOWNGRADED TO MEDIUM. THIS CANCELS REF A.// |
91S現在所處的位置 水氣還算足夠 風切也是微弱狀態(雖然旁邊頗強... 不過現在一整個想說...好漂亮的LLCC呀 |
JTWC : TCFA 1. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN 140 NM EITHER SIDE OF A LINE FROM 14.9S 42.4E TO 19.2S 38.3E WITHIN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY ISSUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME. WINDS IN THE AREA ARE ESTIMATED TO BE 25 TO 30 KNOTS. METSAT IMAGERY AT 281400Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 15.4S 41.6E. THE SYSTEM IS MOVING WEST-SOUTHWESTWARD AT 10 KNOTS. 2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 12.7S 44.1E IS NOW LOCATED NEAR 15.4S 41.6E, APPROXIMATELY 810 NM NORTHEAST OF MAPUTO, MOZAMBIQUE. ANIMATED MULTISPECTRAL SATELLITE IMAGERY INDICATES A CONSOLIDATING, SMALL LOW-LEVEL CIRCULATION CENTER (LLCC) WITH CURVED CONVECTIVE BANDING WRAPPING INTO THE LLCC. A 281238Z SSMI 85 GHZ IMAGE INDICATES A WELL-DEFINED LLCC WITH MULTIPLE CONVECTIVE BANDS WRAPPING TIGHTLY INTO THE SYSTEM. THE LLCC IS LOCATED WITHIN A MARGINAL ENVIRONMENT CHARACTERIZED BY MODERATE TO STRONG VERTICAL WIND SHEAR OFFSET BY GOOD DIFFLUENCE. SEA SURFACE TEMPERATURES IN THE AREA (28 TO 30 DEGREES CELSIUS) ARE CONDUCIVE FOR FURTHER DEVELOPMENT. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 25 TO 30 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1000 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS HIGH. |
除了螺旋相當明顯之外 整體對流開始爆發 以現在了樣子就已經很不錯了 環流還算小有利於結構的整合 如果真的發展起來 強度應該不會弱 但前提是不能太早接觸陸地... |