Don Gansauer wrote from Canton on Tuesday after watching the sun shining into a snow shower. "To form a rainbow, sunshine must be shining through a rainstorm," he said. "If the conditions were perfect, could one see a snowbow?" Sorry. Rainbows appear when sunlight is reflected off the rear surface of liquid raindrops and refracted, or split into colors. Solid snowflakes can't perform the same trick.
THE WEATHER BLOG
FRANK ROYLANCEThe Baltimore Sun
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