Yesterday afternoon I hesitated before getting out of my car in a parking lot during a combination of heavy rain and hail. Then the thought came to me that maybe I could catch an interesting shot of the hail bouncing off of the hood. By the time I got the camera ready the hail stopped but I took a picture anyway. The cold rain-hail combination made an unusual coating on the windshield which gave the lines on the truck and building a twisted look. I think there might be a filter in Photoshop that also does this.
