本帖最後由 t02436 於 2015-2-26 16:59 編輯 五級強烈熱帶氣旋 編號 : 14 U ( 13 P ) 名稱 : Marcia 基本資料 &nb ...
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美國認為轉化副熱帶風暴,而且將逐漸往北移動,評級 LOW。 SH, 13, 2015022118, , BEST, 0, 280S, 1547E, 30, 1000, SD, 0, , 0, 0, 0, 0, 1008, 150, 40, 0, 0, P, 0, , 0, 0, MARCIA, S, SH, 13, 2015022200, , BEST, 0, 276S, 1552E, 35, 996, SS, 0, , 0, 0, 0, 0, 1008, 150, 40, 0, 0, P, 0, , 0, 0, MARCIA, S, SH, 13, 2015022206, , BEST, 0, 268S, 1554E, 35, 996, SS, 0, , 0, 0, 0, 0, 1008, 150, 40, 0, 0, P, 0, , 0, 0, MARCIA, S, AN AREA OF CONVECTION (REMNANTS OF TROPICAL CYCLONE 13P) HAS PERSISTED NEAR 27.1S 154.7E, APPROXIMATELY 95 NM EAST-NORTHEAST OF BRISBANE, AUSTRALIA. THIS SYSTEM IS ASSESSED AS A SUBTROPICAL CYCLONE. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS A BROAD, EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC) WITH DEEP CONVECTION DISPLACED OVER THE SOUTHEAST PERIPHERY OF THE LLCC. A 212320Z ASCAT IMAGE INDICATES A SYMMETRIC CIRCULATION WITH AN EXTENSIVE BAND OF GALE-FORCE WINDS OVER THE SOUTHERN SEMI-CIRCLE. THE LLCC IS LOCATED POLEWARD OF THE SUBTROPICAL RIDGE AND IS LOCATED UNDER SUBTROPICAL WESTERLY FLOW WITH MODERATE TO STRONG VERTICAL WIND SHEAR (VWS). SEA SURFACE TEMPERATURE (SST) VALUES ARE APPROXIMATELY 25C. THE LLCC IS CURRENTLY ASSOCIATED WITH WEAK BAROCLINICITY, HOWEVER, THE SYSTEM IS FORECAST TO TRACK EQUATORWARD OVER WARMER SST OVER THE NEXT 2 TO 3 DAYS WITH LOW POTENTIAL FOR TRANSITION INTO A TROPICAL SYSTEM. ADDITIONALLY, VWS SHOULD DECREASE AS THE SYSTEM TRACKS UNDER THE STR. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 30 TO 35 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 996 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS LOW. |
本帖最後由 t02436 於 2015-2-21 14:22 編輯 轉載Mackay Weather Chaser製作Marcia登陸前後各種雷達動畫及雲圖 |
登陸前一刻 風眼很美 |