We are dealing with a fairly typical monsoon pattern, but one that continues fairly dry in low-levels.
Satellite imagery does indicate an outflow type feature moving northward across the northern Gulf.
It remains to be seen what this feature will bring to Yuma tomorrow morning. The 500 mb anticyclone is centered near Grand Junction. A McCollum Type II pattern is decaying today - it is of interest that my surface analyses indicate that the most significant series of storms yesterday evening probably occurred along the weakening frontal zone. The cold front associated with this wave is moving rapidly southward across Montana this morning. Falling heights and pressures over the Basin continue to lead me to hope for a nice Gulf surge either tomorrow morning or the next.