B. TROPICAL DISTURBANCE SUMMARY:
(1) AN AREA OF CONVECTION HAS PERSISTED NEAR 2.5N 157.5E,
APPROXIMATELY 450 NM SOUTHEAST OF CHUUK. ANIMATED MULTISPECTRAL
SATELLITE IMAGERY DEPICTS A BROAD MID-LEVEL CIRCULATION CENTER WITH
FORMATIVE CONVECTIVE BANDING OVER THE SOUTHERN SEMI-CIRCLE. A
292241Z GMI 37GHZ IMAGE INDICATES NO EVIDENCE OF A DEFINED LOW-LEVEL
CIRCULATION CENTER (LLCC) AND SHOWS DISORGANIZED, FRAGMENTED
BANDING. A 292301Z ASCAT PARTIAL IMAGE DEPICTS MONSOON TROUGHING
WITH CROSS-EQUATORIAL FLOW CONVERGING INTO THE SOUTHERN PERIPHERY OF
THE TROUGH, WHICH IS FUELING THE CONVECTIVE BANDING. SURFACE
OBSERVATIONS SHOW SLP NEAR 1004 TO 1006 MB. UPPER-LEVEL CONDITIONS
ARE FAVORABLE WITH THE SYSTEM LOCATED UNDER AN UPPER-LEVEL POINT
SOURCE AND LOW VERTICAL WIND SHEAR. ADDITIONALLY, THE DYNAMIC MODELS
ARE INDICATING RAPID DEVELOPMENT AS THE SYSTEM TRACKS WEST-
NORTHWESTWARD. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 10
TO 15 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1005
MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL
CYCLONE WITHIN THE NEXT 24 HOURS IS LOW.
B. TROPICAL DISTURBANCE SUMMARY:
(1) THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 2.5N 157.5E
IS NOW LOCATED NEAR 2.7N 155.8E, APPROXIMATELY 370 NM SOUTHEAST OF
CHUUK. ANIMATED INFRARED SATELLITE IMAGERY DEPICTS STRONG MID-LEVEL
TURNING ASSOCIATED WITH A DEVELOPING LOW-LEVEL CIRCULATION CENTER
(LLCC). A 301052Z METOP-A 89 GHZ IMAGE INDICATES DEEP CONVECTIVE
BANDING WRAPPING INTO A DEFINED CENTER. SURFACE OBSERVATIONS REFLECT
A WEAK, SURFACE CIRCULATION WITH 05 TO 10 KNOT WINDS AND SLP NEAR
1003 MB. UPPER-LEVEL CONDITIONS ARE FAVORABLE WITH THE SYSTEM
LOCATED UNDER AN UPPER-LEVEL POINT SOURCE AND LOW VERTICAL WIND
SHEAR. THE DYNAMIC MODELS ARE INDICATING RAPID DEVELOPMENT AS THE
SYSTEM TRACKS WEST-NORTHWESTWARD. MAXIMUM SUSTAINED SURFACE WINDS
ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS
ESTIMATED TO BE NEAR 1003 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A
SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO
MEDIUM.
型態非常不錯
底層也有在建立的趨勢
JTWC分析T1.5
TPPN11 PGTW 301210
A. TROPICAL DISTURBANCE 95W (SSW OF POHNPEI)
B. 30/1132Z
C. 2.67N
D. 155.76E
E. FIVE/MTSAT
F. T1.5/1.5 STT: D0.5/03HRS
G. IR/EIR
H. REMARKS: 38A/PBO SBC/ANMTN. CNVCTN WRAP OF .30 ON LOG10
SPIRAL YIELDS A DT OF 1.5. PT AGREES. DBO DT.
I. ADDITIONAL POSITIONS:
30/0739Z 2.28N 157.02E SSMS
30/0817Z 2.38N 156.52E SSMS
30/0909Z 2.58N 156.15E SSMS
UEHARA