Night owls that are up in the wee hours of Tuesday morning may be able to see a total lunar eclipse, weather permitting. A total lunar eclipse occurs when the Sun, Earth and Moon are lined up, with the Moon completely within the Earth's shadow.
This eclipse will be visible througout most of North America. The partial phase of the eclipse begins at 12:58 am CDT. The Moon will be increasingly covered by the Earth's shadow, until the total phase begins at 2:06 am. This total eclipse phase will last for 78 minutes, until 3:24 am. After that, the shadow will still cover a portion of the Moon until 4:33 am.
In central Illinois, the main concern will be whether or not skies will be clear enough. After snow ends Monday evening, skies will clear from west to east. It currently appears that areas west of I-55 will have the best chances of seeing the eclipse. Areas between I-55 and I-57 have about a 50/50 chance of seeing at least part of the eclipse, while locations east of I-57 will mostly likely remain too cloudy to see much of it.
More information is available at this link on NASA's homepage.