Descending and Nondescending Tornadic Vortex Signatures Detected by WSR-88Ds Trapp, R. J. ; Mitchell, E. D. ; Tipton, G. A. ; Effertz, D. W. ; Watson, A. I. ; Andra, D. L., Jr. ; Magsig, M. A. Abstract Publication: Weather and Forecasting Pub Date: October 1999 DOI: 10.1175/1520-0434(1999)014<0625:DANTVS>2.0.CO;2 Bibcode: 1999WtFor..14..625T