Moon watchers in San Diego can expect to see the first total lunar eclipse in more than two years later this week, if the winter storm hitting San Diego doesn't impact visibility. During the overnight hours of Thursday,

A total lunar eclipse occurs when the Earth is positioned directly between the moon and sun, blocking the sun's rays from the moon.

North America is set to experience its first total lunar eclipse this week in several years, coloring the moon a deep, reddish hue.