And now, ice balls. Ice balls are a relatively rare and odd phenomenon — conditions have to be just right. Temperatures have to be just below freezing ... Wisconsin's Lake Superior shoreline ...

Wavy pancake ice could be seen on the waves of Lake Superior in Wisconsin in video posted on April 14, as winter weather advisories were in place. Footage filmed by local photographer Cheryl Koval ...

Ice was heard cracking on the shore of Lake Superior on Saturday, April 5, as sunlight glistened off the frozen coastal area. Cheryl Koval filmed on a clear day from Ashland, Wisconsin. Koval said the ...

Snow and ice disks ... and complexity. These formations, called "pancake snow," result from very specific weather conditions. Intense cold, a completely frozen lake, and a light wind are enough ...