本帖最後由 桑達 於 2012-11-20 18:58 編輯 TCFA 現在四周的風切滿強的 幅合幅散都很好 螺旋性也很好〜ec跟gfs都估大多的雲係都會被切到東方....而且強度不強 |
可望成為南太第一春 路徑上往東南方向前去 應是一個無害颱! |
編號不到24hrs已經發出TCFA!預測方向是往西南偏南較無陸地干擾的有利發展:lol 早上所見"底層"雖沒像昨晚那般"酷,"不過前方尚無乾空氣干擾最新風速已增至30kts:P! |
直接MEDIUM耶 看好它發展 (1) AN AREA OF CONVECTION HAS PERSISTED NEAR 9.5S 168.9E, APPROXIMATELY 700 NM NORTHWEST OF NADI, FIJI. ANIMATED ENHANCED INFRARED SATELLITE IMAGERY SHOWS DEEP BANDS OF CONVECTION DEVELOPING AROUND AN ELONGATED LOW LEVEL CIRCULATION CENTER (LLCC). A RECENT 190939Z ASCAT PASS SHOWED THE EASTERN PERIMETER OF THE LLCC AND INDICATED WINDS NEAR THE CENTER OF THE CIRCULATION WERE BETWEEN 15 TO 20 KNOTS. A LARGE SWATH OF GRADIENT WINDS WELL TO THE NORTHEAST WAS ALSO PRESENT WITH WINDS BETWEEN 20 TO 25 KNOTS. UPPER LEVEL ANALYSIS INDICATES THE LLCC IS LOCATED EQUATORWARD OF A SUBTROPICAL RIDGE (STR) AXIS, WHICH IS PROVIDING FAVORABLE DIVERGENCE ALOFT WITH MODERATE VERTICAL WIND SHEAR (10 TO 20 KNOTS). SEA SURFACE TEMPERATURES (SSTS) ARE FAVORABLE (28 TO 30 CELSIUS) FOR FURTHER DEVELOPMENT. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1008 MB. BASED ON THE DEVELOPING CONVECTIVE BANDS, POLEWARD OUTFLOW AND FAVORABLE SSTS, THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS MEDIUM. |