I witnessed the same white ball streaking down at about a 30 degree angle from straight up heading towards green lake. It was around 1:30-45 am riding my bike home on the last 2 miles outside of Ripon, no traffic, no headlight on my bike-extremely calm out and visibility was outstanding. The ufo appeared to be about 1.5-2 miles away to the west and looked to head directly down towards green lake. Personally this is the second time I have witnessed this, but couldn't hear it as well as the first time. It emits a static/hissing sound while present, but that being said, it also seems to suck up its own sound as well as whatever other noises are out there. Such as the first time I witnessed it I was starbathing in my lawn bed and the same type of object, same pure white color with the same tail/trail behind it heading to the same location only level with the ground this time and possibly only 250-450 feet AGL coming from the east heading directly west towards the lake and as soon as I began hearing it everything went silent. All the crickets, even the cars that were far away i couldnt hear for that moment. To put a distance on the trail behind the object would be roughly 25-40 times longer than the diameter of the object, and its kind of hard to see the ball in front of the line but with a quick mind you can seperate the two. If you get the opportunity to witness something like this it will open your mind and make your perceptions of speed/time/space more sensitive. I dont really think they are going under the water at green lake but it is the deepest freshwater lake in the state. Each time I witnessed this it was only in view for less than a second, and appeared to be travelling 5-8 miles per second which by my math is somewheres around 18-30,000mph. No boom though