TXNT28 KNES 171220 TCSNTL A. TROPICAL DISTURBANCE B. 17/1145Z C. 11.7N D. 59.4W E. THREE/GOES-E F. T1.0/1.0/D1.0/24HRS G. IR/EIR/VIS H. REMARKS...THE WELL DEFINED LOW LEVEL CIRCULATION THAT HAS BEEN NEARLY STATIONARY NORTHEAST OF TRINIDAD AND TOBAGO OVER THE LAST 24 HOURS HAS ACQUIRED AND SUSTAINED A SUFFICIENT AMOUNT OF CONVECTION TO WARRANT AN INITIAL CLASSIFICATION. CENTER IS LOCATED BENEATH A WELL DEFINED CDO MEASURING 1 DEGREE. SYSTEM IS UNDER SIGNIFICANT NORTHERLY SHEAR AS INDICATED BY APPROACHING CIRRUS DECK BUT WITH THE CENTER UNDER THE COLD OVERCAST AND THE CIRCULATION POSSESSING CIRCULAR TIGHTLY DEFINED CLOUD LINES THE DT IS 2.0. MET IS 1.0 WHILE PT IS 1.5. FT IS BASED ON CONSTRAINTS THAT THE INITIAL CLASSIFICATION BE A T1.0. GIVEN THE STRONG SHEAR THIS SEEMS WARRANTED. I. ADDL POSITIONS NIL ...TURK