An upper level low travels through the border region today and is expected to bring in high winds. The National Weather Service is forecasting blowing dust starting around 11 am MST on Saturday. The graphical weather forecast is shown below for 11am MST
Post event analysis
By 12:50 pm MST, dust sources in Chihuahua were active and dust plumes could be seen moving toward the ENE direction south of El Paso. Below is an image from NASA's VIIRS dust product that I obtained from their SPoRT webpage. In this product, dust shows up as bright pink. I brought the image into Google Earth and added the text.
A few dust plumes appeared on the DOT cameras operating on I-10 in Hidalgo county. I was monitoring the mile marker 11 and 12 cameras on Saturday and plumes appeared to be the typical "here one moment, gone the next" types. Here are a couple that I grabbed from nmroads.com website.