t02436

JMA也反應迅速
下午四點升格熱帶低壓

TROPICAL DEPRESSION 1012 HPA AT 29N 146E ALMOST STATIONARY.

t02436

JTWC直接評級Medium

   B. TROPICAL DISTURBANCE SUMMARY:
      (1) AN AREA OF PERSISTENT CONVECTION HAS DEVELOPED NEAR 28.6N
145.8E, APPROXIMATELY 525 NM SOUTHEAST OF TOKYO, JAPAN. ANIMATED
MULTISPECTRAL SATELLITE IMAGERY DEPICTS A SYMMETRIC AREA OF DEEP
CONVECTION PERSISTING OVER A PARTIALLY-EXPOSED LOW-LEVEL
CIRCULATION CENTER (LLCC). A 010219Z GCOM 37 GHZ IMAGE DEPICTS WELL-
DEFINED, SHALLOW BANDING WRAPPING TIGHTLY INTO THE SMALL, MIDGET-
SIZED LLCC WITH A LINEAR BAND OF DEEP CONVECTION OVER THE SOUTH
QUADRANT. A 010034Z ASCAT IMAGE SHOWS A DEFINED CIRCULATION WITH
PRIMARILY 10 TO 15 KNOT WINDS WITH A BAND OF 15 TO 20 KNOT
SOUTHERLY WINDS OVER THE EASTERN SEMI-CIRCLE. UPPER-LEVEL ANALYSIS
INDICATES A FAVORABLE ENVIRONMENT WITH AN ANTICYCLONE OVER THE
SYSTEM AND VENTING ENHANCED BY A TUTT CELL POSITIONED TO THE WEST-
SOUTHWEST. SST VALUES ARE ALSO FAVORABLE AT 28 TO 30 CELSIUS.
MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS.
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. THE
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE
WITHIN THE NEXT 24 HOURS IS MEDIUM.

ben811018

LLCC頗明顯的
不過現在就被高壓控制著
要發展起來的機會應該不高 ...