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 ...

Last week, a really defined one was captured over Chapel Hill by Mark Waller. A shelf cloud will form when warm, moist air ...

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 ...

Friday will be very similar to Thursday with another round of clouds and cool temperatures ... and jackets out as we are tracking a chance of rain Friday night until Saturday evening.