The National Weather Service in Tucson issued a Flash Flood Warning on August 29 at 5:49 PM MST, effective until 10:45 PM MST for west central Graham County and east central Pinal County in southeastern Arizona. The warning cites Doppler radar indicating thunderstorms producing heavy rain, with 1 to 3 inches already fallen and up to 1 inch more possible. Life threatening flash flooding is ongoing or expected shortly.
KEY FACTS
- The warning covers west central Graham County and east central Pinal County in southeastern Arizona.
- Radar indicated 1 to 3 inches of rain have fallen, with up to 1 inch additional possible.
- Flash flooding is ongoing or expected to begin shortly, affecting creeks, streams, urban areas, highways, streets and underpasses.
- Aravaipa Canyon Wilderness is among the locations expected to experience flash flooding.
- Affected streams and drainages include Garden Creek, Kelly Gulch, Telegraph Wash, Deer Creek, Goodwin Wash, Turkey Creek and Aravaipa Creek.
CONTEXT
The warning was issued by the National Weather Service in Tucson, which uses Doppler radar to detect heavy rainfall and potential flooding. The affected area is sparsely populated but includes the Aravaipa Canyon Wilderness, a popular hiking destination. Flash floods in this region can be sudden and dangerous, especially in narrow canyons and low water crossings. The warning is in effect until 10:45 PM MST, and residents and travelers are advised to avoid flooded areas and never drive through water covered roads.
WHY IT MATTERS
Flash flooding poses an immediate threat to life and property, particularly in desert environments where dry washes can rapidly become torrents. The warning highlights the danger to motorists and hikers in the affected areas, and underscores the need for timely weather alerts in remote regions.
WHAT TO WATCH
- Monitor local weather updates and heed any additional warnings or advisories.
- Avoid travel through the warned area until the warning expires.
- Be aware of rising water levels in creeks and streams, especially near Aravaipa Canyon.
- Check road conditions before driving, as underpasses and low water crossings may be flooded.