Conditions remain fairly dry in low-levels.
Satellite imagery this morning revealed a spectacular MCS residual vortex with strong rotation and several cloud bands. This feature has moved fairly rapidly west-northwestward toward the northern end of the Gulf of California. Southerly flow has just not strengthened over the northern Gulf of California, and Yuma remains fairly dry with only slow moistening occurring. The local Valley environment is well conditioned for downburst storms if we can ever get storms away from the mountains with updrafts rooted in the desert boundary layer. The McCollum Type II pattern has decayed today but will be briefly re-established tomorrow.