Unfortunately, cloudy and stormy weather could obstruct the sky in several regions, forecasters said. Will Ohio be among them? See the map.

The moon, which does not produce its own light, shines because its surface reflects the sun's rays. Though the Earth blocks any direct sunlight from reaching the moon during a total solar eclipse, the sun still casts the Earth's shadow on the lunar surface. How to watch: The lunar eclipse is coming. Will York County be able to see it?

The first of two lunar eclipses this year, and the only one visible in the U.S., is taking place early Friday morning. So if you are hoping to catch a glimpse of the blood moon, you’ll need to set your alarm extra early.