arizona

June 21st was an interesting setup in the Four Corners area. Tropical moisture had surged across the southwest while an ejecting trough and associated jet streak provided support for elevated shear across the Arizona-Utah border and on into New Mexico-Colorado. Models varied on initiation and...

On Sunday, October 21st, tropical moisture was in place over Arizona, with a low impinging on it from the west. So southwest flow was in play over the Mogollon Rim Convergence Zone (MRCZ). Work had been a bear and I’d been dealing with a chest cold the previous few days so I wasn’t exactly eager...

Arizona is not prime territory for supercells. Moisture, instability, and shear don't superimpose often. The tail end of monsoon season is when that exciting combo is most likely to happen. And it set up perfectly this year on September first. This wound up being my best storm chase in Arizona...

I hadn’t been forecasting this day to death…not even close. I was pretty much keeping a lazy eye on it for any option for interesting storms as low pressure worked its way into southern Arizona. SPC had marked out southeast Arizona and southwest New Mexico for marginal severe probabilities, but...