An upper level low centered 500 miles west of Kauai is sending mid and high clouds over the islands. Within 200 miles of the center of circulation, near 22°N 168°W, layered clouds with embedded thunderstorms extend as high as 45 thousand feet. A convergent band of layered clouds arcs to the southeast and extends south and then southwest, where it merges with the intertropical convergence zone near 8°N 170°W. This band also contains embedded thunderstorms with tops reaching 52 thousand feet near 10°N 163°W.
A surface low sits under the upper low, and scattered low clouds are moving south between 15°N and 23°N from 172°W to the dateline as the low clouds rotate around the surface low. From 10 and 15°N, between the same longitudes, clouds veer out of the west. Otherwise, visible low clouds are moving toward the west across the central Pacific with tops of 6 thousand feet near 140°W, growing to 12 thousand feet by the dateline.
http://www.prh.noaa.gov/hnl/cphc/?sim
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May not develop tropical characteristics but looks interesting enough to keep an eye on it
