The following posts refer to INVEST 92A in May/June 2007:
435
TPIO10 PGTW 311215
A. TROPICAL DISTURBANCE WEST OF INDIA
B. 31/1130Z
C. 13.3N/7
D. 72.5E/4
E. FIVE/MET7
F. T1.0/1.0/INIT OBS (31/1130Z)
G. IR/EIR/VIS/MSI LLCC
40A/PBO SBC/ANMTN. CNVCTN WRAPS .25 ON LOG10 SPIRAL
YIELDS 1.0. DBO DT. PT AGREES
DELEO
[hr]
AN AREA OF CONVECTION HAS PERSISTED NEAR 13.2N 72.6E,
APPROXIMATELY 350 NM SOUTH OF MUMBAI, INDIA. RECENT ANIMATED
MULTITSPECTRAL IMAGERY SHOWS A WELL-DEFINED MID-LEVEL CIRCULATION
WITH CYCLIC CONVECTION NEAR THE CENTER. HOWEVER, NEITHER
MULTISPECTRAL IMAGERY NOR A 310530Z TRMM MICROWAVE IMAGE INDICATES
A DISTINCT LOW LEVEL CIRCULATION AT THIS TIME. INSTEAD, A 310058Z
QUIKSCAT IMAGE INDICATES STRONG CONVERGENCE ON THE WESTERN SIDE OF
A SURFACE TROUGH ALONG THE COAST OF INDIA NEAR 13N. UPPER LEVEL
ANALYSIS REVEALS THE DISTURBANCE IS IN A REGION OF LOW VERTICAL
WIND SHEAR UNDER THE RIDGE AXIS RUNNING THROUGH CENTRAL INDIA. AN
UPPER LEVEL TROUGH CURRENTLY OVER THE NORTHERN ARABIAN SEA IS
ENHANCING DIVERGENCE ALOFT. MAXIMUM SUSTAINED SURFACE WINDS ARE
ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS
ESTIMATED TO BE NEAR 1006 MB. DUE TO THE STRONG MID-LEVEL
CIRCULATION AND THE FAVORABLE UPPER LEVEL ENVIRONMENT, THE
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE
WITHIN THE NEXT 24 HOURS IS POOR.
