The weather is very weird at the moment. There is not a cloud, I think, in the sky, but visibility is limited due to all the dust in the air. This is a photo I stole from a Dallas weather cam at about 3:30pm today. Currently winds are at 25 mph with gusts up to 45/mph.
My guess is that a lot of this dust is from a humongous construction project (yeah, we need another mall) south of us. There are several acres of open earth there. Or at least there was, before this wind came along!