Before we get to the main topic, take a look at the picture of the dust storm in Lubbock, TX today as it approaches a subdivision.
We have had two previous occasions to look into "Cut Off Lows" at jet stream level in the atmosphere. When Hurricane Irene left behind a upper cut off low and a few weeks later when one sat over top of us for more than a week we enjoyed extended periods of wet weather.
Because these lows are pools of cool air isolated from the main jet stream they travel only slowly until they are re-absorbed by the jet.
Now as the video below shows another cutoff low will make a visit to the tristate but this one will not linger long.