The NJ Herald reports Tuesday's ring was a 22-degree halo. The name that originates in the principle "that light, when it goes through a prism and exits at 22 degrees, is separated into various colors."
Tuesday's halo was reportedly caused by refraction of light by ice crystals in the sky.
"The ice is in high cirrus clouds," said Walter Drag, a meteorologist with the National Weather Service office in Mount Holly. "It's a very folklorist predictor of rain. It doesn't always work out that way, however."
According to Drag, the crystals were created because an upcoming warm front lifted pockets of air, with all its moisture, which then froze at high altitude.
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