Dust Storm Warning

The National Weather Service in Tucson has issued a

* Dust Storm Warning for... Northwestern Pima County in southeastern Arizona...

* Until 715 PM MST.

* At 617 PM MST, a wall of dust was located along a line from 9 miles northeast of Organ Pipe Cactus National Monument to 10 miles southeast of Hickiwan, moving northwest at 25 mph.

HAZARD...Less than a quarter mile visibility.

SOURCE...Detected by National Weather Service meteorologists.

IMPACT...Dangerous life-threatening travel.

* Locations impacted include... Ajo, Hickiwan, Organ Pipe Cactus National Monument, San Simon, Why, Gunsight, Charco 27, Vaya Chin, KuKatch and San Simon West.

This includes the following highways... Route 85 between mile markers 33 and 78. Route 86 between mile markers 53 and 85.