It's looking that this heat wave is in it's waning days after Tuesday the 14th. Several runs of the GFS and now the Euro backs the ridge all the way into the 4 corners by the end of the week, putting us in a NW flow aloft along with more seasonable temps. In addition, subtle mid level impulses could trigger MCS activity that forms over CO.&KS. to move into OK and N.TX. in the overnight and early morning hours. Best chances of rain will be from early Fri. AM through the weekend.
Meanwhile, I feel bad for folks in AZ. Their monsoon will pretty much shut down and the chances are there that some places that traditionally bake, may hit 120F. BTW: I read on the PHX Disc. that the MEX. upper air data has been missing for the last couple of weeks. What's the reason for this?
Stay cool.