Storm reports from yesterday (https://www.spc.noaa.gov/climo/reports/181021_rpts.html) reveal a number of large hail reports with hailstones up to 1.75” in diameter, mainly in southern to southeastern Arizona. There was even a landspout tornado reported east of Flagstaff (https://www.facebook.com/LiveStormChaser/videos/181300542752179/).
Although most of the activity has been to the east of Prescott, we will continue to see a chance of showers or thunderstorms today and tomorrow. Some isolated thunderstorms could become severe. Storm propagation will generally be toward the northeast at about 15-20 mph. The weak upper-level trough that has brought the moisture into Arizona will shift east of Arizona on Wednesday and a ridge of high pressure will build for the remainder of the week. The result will be warmer-than-normal temperatures and mostly sunny skies.
Met Mail is an unofficial weather discussion and forecast transmitted once or twice a week via e-mail by the Embry-Riddle Department of Meteorology (http://meteo.pr.erau.edu/). Embry-Riddle offers an undergraduate bachelor-of-science degree program in Applied Meteorology. Please spread the word to all potential qualified candidates!
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Official National Weather Service forecast