These snowflakes were spotted all over New York City. Meteorologist Chris Dolce explained that all of these sightings are due to the specific way they've fallen:
If snowflakes stay separated from each other like you see in these photos, and if you look closely enough, you can sometimes see the structure of snowflakes with your naked eye.
There are many different types of crystal patterns and these star-shaped snowflakes are just one example. The dendrite, a star-shape with varying patterns, is the most common shape of a snowflake.
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