Vibration from front end at low speeds.

I recently bought a 2005 prius with 125,000 miles. Car runs very smooth and everything works great on it. Just took it on a trip to mammoth and had to run through some snow and pushed it pretty hard at times.
It now intermittently at low speeds (5-15 mph) makes a loud vibration under the car. I can feel the vibration with my feet and with driving carefully can avoid this sound most of the time. It seems more likely to happen when turning the wheel left. I haven't been able to find anyone with a similar issue, I'm thinking maybe a u joint or something has gone bad. I may have knocked something out of place with all the snow and ice under my car. Any help would be greatly appreciated. I have a video of the sound just can't upload it to here for some reason. If you're interested in hearing it I can send it to you through email or text.

 

Thank you guys for all the help! Update I took it to a mechanic and he found the sound odd. He drove it around and it turned out I bent the catalitic converter cover when driving over heavy snow and when the exhaust would rattle at low speeds it would hit against it. He put a piece of wood under it and bent it back to normal. Car doesn't make the noise anymore and everything's great. Thank you!!