Biggest Threat Today: Flash Flooding

TUCSON - Today will be the busiest Monsoon day so far with strong to severe storms possible. A Flash Flood Watch is in effect from 7 AM this morning until Friday evening for the Catalina Mountains, Southeast Pinal County, and portions of the Tucson Metro Area and Upper San Pedro River Valley.Storms are already firing up and will continue to increase by late morning and into the early afternoon. Some storms could be strong to severe and the biggest threat will be heavy ra