Arctic sky show: Subzero temperatures trigger sun dogs around Minnesota
Temperatures hit minus 38 in Effe, minus 17 at MSP Airport. Ice crystals refracted sunlight to create a sky show Friday morning.

This shot from the Twin Cities NWS office in Chanhassen Friday morning shows sun dogs on either side of the rising sun and a sun pillar in the center of the image above the rising sun.
Twin Cities National Weather Service
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