The first part of our winter here on the Colorado Front Range was kind of odd. We were extremely dry and what storms we received were different than normal. Such was the case on Christmas Eve when we actually received rain instead of the more typical snow.
I had to run a quick errand to pick up some last-minute things late that afternoon for the holiday and the storm clouds were brewing. What was notable was how they looked much more like a May or June thunderstorm, including mammatus clouds. Mammatus is usually more associated with severe thunderstorms so it made for quite an unusual Christmastime scene over a local open space.