Skies will be clear across most of Western Wisconsin including the Chippewa Valley. That will mean great viewing for a special full moon. It's known as a blue moon. The name is not in reference to the moon's color. It's not going to be blue tonight. The name refers to rarity of having two full moons in a month. The only area that may have to contend with some scattered clouds will be down along and south of I-90. The clouds are a result of the remnants of Isaac.
The phrase, "once in a blue moon," actually comes from the extremely rare event when the moon actually does looks blue. That only ever happens if there's a lot of volcanic ash in the atmosphere.
A blue moon is really just the second full moon in a single month. It's a pretty rare event and wont happen again until July 31, 2015. Even more rare is two months in a single year with a blue moon. That has not happened since back in 1999 and wont happen again until 2018.
One other note about the blue moon. It's been known to be a symbol for sadness. That makes it seem fitting as Friday night's blue moon will coincide with the memorial service of Neil Armstrong. The first man on the moon.
If you happen to take any pictures of the blue moon tonight, be sure to share them with us on the WEAU facebook page (link below). We'd love to see them!