Aug 12, 2014
A high amplitude ridge was centered over the western U.S. with surface high located in eastern New Mexico. Precipitable water values ranged from 1.25 to 2 inches, and a flash flood watch was in effect for the area. Monsoon storms fired ahead of a cyclonic circulation which was located in northern Sonora. Numerous showers and thunderstorms moved north through southern Arizona, causing severe winds and flash flooding mainly in the Tucson area.
Source: NOAA National Weather Service Storm Events Database (event 540103). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Pima County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.