Mesoscale Discussion 1835 NWS Storm Prediction Center Norman OK 1125 PM CDT Tue Aug 04 2026 Areas affected...the eastern Arizona international border vicinity Concerning...Severe Thunderstorm Watch 538... Valid 050425Z - 050630Z The severe weather threat for Severe Thunderstorm Watch 538 continues. SUMMARY...A couple of strong to severe wind gusts might still be possible through about 10-11 PM MST near the eastern Arizona international border vicinity. However, renewed intensifying convection is tending to occur to the southwest of this core, farther to the south of the international border, aided by more unstable updraft inflow and better shear. the risk for severe weather appears to be diminishing sufficiently to allow the severe weather watch to expire.