Term used to define the Saturday, February 6 2010 storm that dropped 30+ inches on Washington, DC and its surrounding areas, as well as the aftermath of chaos that ensued. The storm was the largest in 90 years in the region, and it effectively shut down the city for 84 hours (and was followed by another large storm on Wednesday, February 10, 2010). The term was first used by the AP.
a snowbow is quite simply a rainbow when its snowing.
it is very rare and only can be seen when smoking large amounts of narcotic substance at an altitude over 2000ft above sea level, i.e up a mountain. then it is quite common.
wow dude! like, look at that totaly radical rainbow, its like, fully trippy.
no way man, thats no rainbow, thats a snowbow!