They were rain, the threat (or promise) of rain and the picturesque appearance of the profuse and constant clouds that either brought the rain or threatened to. From the mere look of the sky ...

Asperitas clouds typically form ahead of a thunderstorm. As rain from that storm falls to the ground, the surrounding air is cooled and rushes out ahead of the storm. This is called a downdraft.

Around lunchtime today, scattered clouds are expected to become more common ... Grand Junction, Montrose, and Delta each have a 40% chance of seeing rain tonight after dark and through tomorrow ...

Expect a mix of sun and clouds with afternoon highs in the low to mid-70s. Another system brings the chance for rain back into Siouxland Wednesday night and into Thursday. Want to get the latest ...