It might not have been true polar temperatures, but this weekend’s Lake Cumberland Polar Plunge was definitely chilly.

It's moving west and will push the jet stream — the river of air that moves weather systems such as storms — into a pattern that causes polar air to plunge and stay there, Cohen said.

BIG BEAR LAKE, in March, can be cold. Quite cold, in fact, the sort of throw-on-another-few-layers kind of cold, a chilliness ...