Large High Pressure Area

All the weather attention the last day or two has been focussed on the historically deep cyclone over the western Great Lakes region - see couple of previous posts. Now a large high pressure area will be covering much of the central U.S., bringing more typicall Fall weather. This morning's NAM forecast (850 mb forecast shown above valid 11 am MST tomorrow) shows that as the large high at 850 mb moves southeast from the central Rockies a strong east wind pressure gradient will develop across southern New Mexico and southern Arizona. This will result in a sort-of backdoor front, with gusty east winds developing by tomorrow morning. And that's about all there is to talk about here locally.