low, really the scariest aspect of it is being out in a car because you hear so many times when these things happen there are 50 car pileups. let's get to it. here's the satellite picture, it happened 5:10 to 5:30. there's tehran. what's moving through, this purple, red, orange, the white, that's the clouds, the thunderstorm, and of course all the sand and dust and debris. so technically it's called a haboob. here's the deal. it has to be an aired area. as air is forced down and then this air is forced forward because of this thunderstorm that has a cold front with it. you really have to have very strong winds to boot. that kind of kicks up all the dust and debris and moves it. it's a wall of just brown dust that there's no visibility through. actually, these haboobs can get as high as 10,000 feet in the air. they're 10 to 30 minutes long,