UPDATE: System upgraded to Tropical Depression 16 at 28/15Z.

Invest 96L remains poorly defined. A low-level cyclonic swirl was noted east southeast of Cozumel, Mexico, at 28/04Z with convection building but scattered mostly to the east. By 12Z Wednesday morning strong southwesterly windshear should be well established ahead of a front/trough from the northern Yucatan across the Florida peninsula and extending northeastward along the entire east coast. Development of a baroclinic low or perhaps a subtropical depression seems likely and the shear should keep the system lopsided to the east. Primarily a mostly beneficial rain event with blustery winds for the southern half of the Florida peninsula on Wednesday with the low centered east of east central Florida late Wednesday afternoon/evening. The system should push north northeastward and forward speed should increase late Tuesday into Wednesday.
ED