NWS Forecast Office Tucson, AZ

A surface high pressure building down the front range of the Rockies into west/central Texas late this weekend into early next week will result in a backdoor frontal boundary moving into Southeast Arizona from the east Saturday afternoon into Sunday. This front will result in gusty east to southeast winds 15-25 mph with gusts to 30-35 mph to those locations prone to easterly winds. The strongest winds will be across the Gila River and San Simon valleys, where southeast winds of 20-30 mph with gusts to 35-40 mph may be possible. These winds may produce areas of blowing dust, especially across the more dust-prone areas of the San Simon Valley which impact portions of Interstate-10 between Willcox and the AZ/NM state line.