August 31st: Better Storm Chances and Much Cooler Temps Today and Tomorrow
Synopsis Better synoptics combined with sufficient moisture and instability will promote a much greater chance for showers and thunderstorms across Arizona today and tomorrow with tomorrow being the most active day. With lower mid level heights and decent low level moisture, high temperatures will be significantly cooler as well. Current Conditions A strong thunderstorm cluster impacted the Tucson vicinity yesterday evening with strong winds, blowing dust, and even a bit of rainfall. NWS 24-hour accumulated precipitation map. A severe storm over northeast Tucson dropped quarter sized hail via SPC storm reports too. SPC Hail reports from yesterday. The mid level anticyclone which has been providing Arizona with extreme heat has finally weakened significantly and is now centered over central New Mexico. This puts Southern Arizona under easterly/southeasterly flow aloft. SPC 500mb analysis as of 1700z. An overnight Gulf of California moisture surg...