Winter is a common time of year for sun halos. Learn more about a ring effect in the sky
Though sun halos can happen year-round, they are especially noticeable in the winter when ice-filled cirrus clouds are more ...
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Sun halos sometimes visible in Michigan skies. Find out what causes the ring effect
sun halos form when high-altitude clouds — specifically cirrus or cirrostratus clouds — contain ice crystals that act like tiny prisms. These ice crystals refract and bend sunlight, creating the ...