When Cessna Kutz walked on her porch on Lake Sammamish, Washington, she immediately went back inside to pick up her camera.
What she had rushed to photograph was probably a circumhorizontal arc, often referred to as a horizontal rainbow or a fiery rainbow, these optical phenomena occur when the sun is higher than 58° in the sky.
There is a popular misconception that such halos are rare. However, their frequency depends on the location especially the latitude. In the United States, it is relatively common to see them several times each summer, while the phenomenon is quite rare in mid-latitudes and northern Europe.
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