Wdpn31 Pgtw 050300 

msgid/genadmin/navpacmetoccen Pearl Harbor hi/jtwc// 

subj/prognostic reasoning for tropical storm 01w warning nr 19//
rmks/ 
1. For meteorologists.
2. Prognostic reasoning for 050000z to 051200z Apr 2007
   a. Tropical Storm (TS) 01w (Kong-Rey), located approximately 960
nm west-northwest of Wake Island, has tracked east-northeastward at
22 knots over the past six hours. Ts 01w has weakened rapidly over
the past twelve hours. The low level circulation center (LLCC) is
now partly exposed with stratocumulus advecting around the western
quadrants. The system is rapidly exhibiting signs of extratropical
transition with asymmetic structure and strongest winds far outside
the LLCC.
   B. Ts 01w is tracking east-northeastward with the low t0 mid-
level midlatitude flow in advance of a midlatitude trough located
just east of Japan. Throughout the forecast period, the system
will continue to accellerate east-northeastward in the midlatitude
flow.
   C. Ts 01w will continue to weaken due to competing influences of
good poleward outflow, strong vertical wind shear, and cooler sea
surface temperatures. By tau 12, ts 01w will complete extratropical
transition.
   D. Current wind radii are based on a 041913z partial quikscat
image and a 041814z AMSU image.  
Forecast team: charlie
//
nnnn