From the US National Weather Service Lubbock Texas on Monday:
"A massive 200+ mile long dust storm developed along an outflow-assisted frontal boundary in northern Mexico (just south of the Rio Grande) late Monday afternoon. Check out the super cell thunderstorms to the east end of the dust cloud.
This dust storm looked a lot like the dust storm that swept through the Lubbock area Oct, 17, 2011. Weather observations are few and far between in northern Mexico, but a report from the International Airport in Chihuahua indicated wind gusts exceeding 40 mph with surface visibilities to a half mile in sand and dust as the storm moved southward from near the Rio Grande deep into the desert areas over about a five-hour period.
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