A sudden and severe dust storm swept through Pima County in southeastern Arizona, prompting the National Weather Service in Tucson to issue a dust storm warning on Sunday, August 30, at 6:17 p.m. MST. The warning was in effect until 7:15 p.m. MST and affected Northwestern Pima County.
The National Weather Service reported that a massive wall of dust was moving northwest at a speed of 25 mph, originating from a line stretching from 9 miles northeast of Organ Pipe Cactus National Monument to 10 miles southeast of Hickiwan. The storm posed a significant hazard with visibility dropping to less than a quarter mile, making travel dangerous and life-threatening.
The affected areas included Ajo, Hickiwan, Organ Pipe Cactus National Monument, San Simon, Why, Gunsight, Charco 27, Vaya Chin, KuKatch, and San Simon West. Key highways such as Route 85 between mile markers 33 and 78, and Route 86 between mile markers 53 and 85 were also impacted.
A dust storm, known locally as a haboob, typically occurs during the monsoon season from June to September in Arizona. These storms form when cold downdrafts from thunderstorms collide with the hot desert floor, stirring up large amounts of dust and pushing it forward as a towering wall of wind and sand.
Meteorologist Andrew Deemer from the National Weather Service in Phoenix explained that "haboob" is an Arabic word meaning "big, blasting winds." The term has been adopted to describe the intense and sudden nature of these dust storms.
While haboobs can be short-lived, lasting only a few minutes to an hour, their impact can be significant. Stronger downdraft winds and dry soil can lead to larger dust clouds, with lingering dust and reduced visibility persisting for an hour or more after the storm has passed.
For drivers caught in a dust storm, the Arizona Department of Transportation's "Pull Aside, Stay Alive" campaign offers crucial safety tips. Drivers are advised to immediately check traffic conditions, slow down, and find a safe place to pull off the road. It is crucial not to stop in a travel lane or emergency lane, and to turn off all vehicle lights to avoid being mistaken for a moving vehicle.
High-profile vehicle drivers are particularly advised to be aware of changing weather conditions and travel at reduced speeds. More information on dust storm safety can be found at [PullAsideStayAlive.org](https://www.PullAsideStayAlive.org), and safety tips for driving in rainstorms can be found at [azdot.gov/monsoon](https://www.azdot.gov/monsoon).
The 2026 monsoon season in metro Phoenix has presented a mix of weather phenomena, including heat, rain, and now, a massive dust storm. Residents and visitors alike are reminded to stay informed and take necessary precautions during these unpredictable weather events.
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