Saguaro: National Weather Service issues flash flood warning

If you were planning a trip out around Tucson, one alert is worth your attention. The National Weather Service issued a flash flood warning for the area that includes Saguaro National Park.

According to the National Weather Service, the warning covered two Arizona counties, Cochise and Pima. Pima County is where the park's two districts sit, east and west of the city. The warning window opened on September 29, 2026 at 12:30 PM and closed at 6:30 PM, Arizona local time.

A flash flood can turn a dry riverbed, a "wash" like the ones you'll find all over the Sonoran Desert, into a torrent that sweeps away everything in minutes. The National Weather Service's message is blunt, and we're passing it along as written: when you hit a flooded road, turn around, don't drown. Most flood deaths during these events happen in vehicles.

So what do you do if you're on the ground during an alert like this? Be aware of your surroundings and never drive on a road covered with water, even if it looks passable. Depth and current are very hard to judge from behind a windshield. If you see flooding, report it to local emergency services or law enforcement, and ask them to pass the information along to the National Weather Service, but only when you can do it safely.

These warnings are occasional and tied to the weather of the moment, especially during the American Southwest's summer monsoon season. Before you head out on a hike or drive the park's roads, get in the habit of checking the day's forecast and access conditions. To plan your trip with peace of mind, find the distances, best seasons, and entry points in the Saguaro park guide.