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Mobile Sounding Observations of a Tornadic Storm near the Dryline: The Canadian, Texas Storm of 7 May 1986

Abstract On 7 May 1986 thunderstorms formed during the afternoon near a dryline in the Texas Panhandle under weak synoptic-scale forcing. Five tornadoes and large hail were produced by one storm near Canadian, Texas. The focus of the paper is the analysis of soundings obtained by a storm-intercept crew. A sounding launched into the wall cloud of the storm just after the fourth tornado indicated a nearly pseudomoist adiabatic lapse rate, a temperature excess of 10°C over the environment at 500 mb, and an updraft speed of almost 50 m s−1 near 6 km AGL, in reasonable agreement with parcel theory.