The National Hurricane Center points out the sheared, tilted structure of Tomas:
THIS AFTERNOON...TOMAS CONTINUES AS A SHEARED TROPICAL STORM WITH MOST OF THE DEEP CONVECTION LOCATED EAST OF A LOW-LEVEL SWIRL. DESPITE APPEARANCES THAT THE SWIRL IS THE CIRCULATION CENTER...THE AIR FORCE C-130 OBSERVATIONS INDICATE THAT THIS FEATURE HAS BEEN ROTATING AROUND A BROADER MEAN CENTER. THE RECONNAISSANCE ALSO OBSERVED A CENTRAL PRESSURE OF 995 MB AND EQUIVALENT WINDS AT THE SURFACE OF ABOUT 45 KT...THOUGH THIS WIND VALUE COULD BE SLIGHTLY GENEROUS.
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