Unusually moist conditions for a normally hot, dry time of year kept the Big Bend desert floor bounteously abloom, and supported stratocumulus clouds in the top of the boundary layer, where they were penetrated by the Chisos Mountains. Strong surface heating and destabilization mixed these clouds away within less than an hour. That heating also weakened already meager capping in advance of storms that would move out of the Mexican high country to the southwest, and greet us elsewhere in the park.
20 E Terlingua TX (21 May 15) Looking SSW
29.3365, -103.2586