Weather

Lake Superior froze over last week, creating an incredible phenomenon where the lake was completely clear - and several inches thick, making it possible to see to the bottom of the Great Lake.

The National Weather Service in Portland/Gray, Maine, said an unusual phenomenon was responsible for the cold temperatures.

Hundreds of balloons cruise through the atmosphere daily, though none garner the attention that the Chinese vessel has.

Common causes of frozen pipes are a sudden drop in temperature, poor insulation or an incorrectly programmed thermostat.

The NWS in Portland/Gray, Maine, said an unusual phenomenon for its area of responsibility is possible Friday night as the tropopause could dip below the peak of Mount Washington, the highest summit in the northeastern U.S.