583
abpw10 pgtw 230600
msgid/genadmin/navmarfcstcen Pearl Harbor hi/jtwc//
subj/significant tropical weather advisory for the western and
/South Pacific oceans/230600z-240600zjul2008//
rmks/
1. Western North Pacific area (180 to Malay Peninsula):
a. Tropical cyclone summary: none.
B. Tropical disturbance summary:
(1) the area of convection previously located near 23.1n
135.3e is now located near 22.2n 132.3e, approximately 400 nm south-
east of Naha, Okinawa. Recent animated multispectral satellite
imagery shows low level cloud lines spiralling into a tightening
low level circulation center (LLCC) also evident in a 212304z
ssmis pass. A 220915z Quikscat image indicates weak winds
at the core of the system, with winds in excess of 20 knots along
the outer periphery. Shallow convection has persisted along a line
of formative banding along the western periphery of the circulation.
However, the circulation remains almost completely devoid of
associated deep convection near the center. Upper level analysis
suggests that an upper level cyclone previously superimposed above
the LLCC has progressed westward and that anticyclonic flow may be
developing aloft. This potential for improved upper level flow
could spark new convective development. Maximum sustained surface
winds near the center of the disturbance are estimated at 10 to 15
knots. Minimum sea level pressure is estimated to be near 1004 mb.
Due to the lack of persistent deep convection and poor upper level
support, the potential for the development of a significant tropical
cyclone within the next 24 hours remains poor.
(2) no other suspect areas.
2. South Pacific area (west coast of South America to 135 east):
a. Tropical cyclone summary: none.
B. Tropical disturbance summary: none.
Forecast team: Bravo//
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