The best chance for monsoon storms to reach the Valley is late Tuesday night into early Wednesday morning, according to the National Weather Service in Phoenix. Daytime storm chances remain limited.
Storms are expected to develop mainly over the higher terrain and southeastern Arizona Tuesday afternoon, similar to recent days. Some of that activity could drift toward the south-central Arizona lower deserts, including the Valley, later in the evening or overnight.
High terrain & SE AZ thunderstorm development this afternoon should be fairly similar to the last few days, however, the South-Central AZ lower deserts may not see as much activity until the overnight period into Wednesday morning. Remain weather aware! #azwx#cawxpic.twitter.com/U1MyS3MJBm…