TUCSON, AZ — Flash flooding is underway in parts of Pima County after thunderstorms dumped heavy rain across southeastern Arizona, prompting multiple warnings and a broader watch from the National Weather Service in Tucson. Officials say runoff could keep building overnight as water moves through washes and low-lying areas.
The most serious warning covers south central Pima County through 11:15 p.m. MST, with radar showing storms producing life-threatening flash flooding. Another warning remains in place for eastern Pima County until 10:30 p.m. MST, and flood-related advisories continue in central parts of the county through Sunday morning.
Rainfall totals in some warned areas have already reached between 1 and 3.7 inches. The weather service says additional rain is still possible, especially where storms keep training over the same spots.
Where the worst flooding is happening
The warnings cover several stretches of south and east Pima County, including areas near Topawa, Vamori, Cowlic, Choulic, San Miguel, Coldfields, and other small communities. The watch also includes the Tucson metro area, the Tohono O’odham Nation, the Upper San Pedro River Valley, the Upper Santa Cruz River Valley and Altar Valley, along with nearby mountain ranges…