Arizona Weather Force has issued a Flood Watch effective today through some of Tuesday. The flood watch issued does come with the risk model so make sure you see that for your area. It paints a lot of Maricopa and Pinal County’s major populated zones in higher flood risks.
A storm system that is moving out of Southern California this evening will bring the increase in precipitation to the watch area. The heaviest rainfall will be this evening and through the overnight into Tuesday morning. Extremely strong upper-level lift and a strong jet stream will bring the dynamics needed for rapidly growing tops, giving way to major flood conditions.
The Arizona Weather Force Flood Risk Model shows a high (warning) risk centering along I-10 from La Paz, Maricopa, and Pinal County, where most of the population of Arizona lives. At the time of this watch, there are no flood watches issued elsewhere other than here at Arizona Weather Force, which is extremely suspect.
Those in the watch area could prepare for rainfall totals and amounts of what San Diego County received, which is the dynamic that will move over you during the watch period.