Cold blasting gust front - Greeley, CO

Tuesday I left the house it felt about 55 degrees and felt warm and calm, I drove about 5 blocks noticing the clouds looking convective and intense. Very quickly it dropped what felt about almost 20 degrees and the winds were gusting an estimated 35 Knots. I took some pics of the convectiveness and the defined boundary and skinner archived these radar and sat for me after i texted him about it. You can see the crazy front on radar and what looks to even be some 35 dbz in there, possibly just some heavier rain, as it was raining. Later that evening it started to rain pretty hard and then sleet.

In the pics below you can see that the base of the clouds is defined in some, I was watching strong rising motion!, and also what sort of resembles mammatas clouds